Floristic composition and comparison of middle Eocene to late Eocene and Oligocene floras in North America

Bulletin of Geosciences

Volumn 85, Issue 1, 2010, Pages 111-134

  DeVore, M L ^a   Pigg, K B ^b  

^a GEORGIA COLLEGE AND STATE UNIVERSITY   (United States)

^b ARIZONA STATE UNIVERSITY   (United States)

Author keywords

Claiborne; Eocene Oligocene transition; Florissant; Okanogan highlands; Tertiary floras

Indexed keywords

BIOGEOGRAPHY; CLIMATE CHANGE; CLIMATE CONDITIONS; DEPOSITIONAL ENVIRONMENT; EOCENE-OLIGOCENE BOUNDARY; FLORA; FOSSIL; PALEOBOTANY; PALEOGENE;

OKANOGAN COUNTY; ROCKY MOUNTAINS; UNITED STATES; WASHINGTON [UNITED STATES];

CYCADOPSIDA; SABAL;

EID: 77949686152     PISSN: 12141119     EISSN: None     Source Type: Journal    
DOI: 10.3140/bull.geosci.1135     Document Type: Article

References (242)

1. Archibald, S.B. & Greenwood, D.R. 2005. The Okanagan Highlands: Eocene biota, environments, and geological setting, southern British Columbia, Canada and northeastern Washington, USA. Canadian Journal of Earth Sciences 42(2), 111-114. DOI 10.1139/e05-012
2. Arnold, C.A. 1955. A Tertiary Azolla from British Columbia. Contributions of the Museum of Paleontology of the University of Michigan 12, 37-45.
3. Asmussen, C.B., Baker, W.J. & Dransfield, J. 2000. Phylogeny of the palm family (Arecaceae) based on rps16 intron and trnL-trnF plastid DNA sequences, 525-537. In Wilson, K.L. & Morrison, D.L. (eds) Systematics and evolution of monocots. CSIRO Publishing, Collingwood, Victoria.
4. Axelrod, D.I. 1957. Age-curve analysis of angiosperm floras. Journal of Paleontology 31(1), 273-280.
5. Axelrod, D.I. 1966a. A method for determining the altitudes of Tertiary floras. Palaeobotanist 14, 144-171.
6. Axelrod, D.I. 1966b. The Eocene Copper Basin flora of northeastern Nevada. University of California Publications in Geological Sciences 59, 1-125.
7. Axelrod, D.I. 1987. The Late Oligocene Creede Flora, Colorado. University of California Publications in Geological Sciences 130, 1-235.
8. Axelrod, D.I. 1998. The Eocene Thunder Mountain flora of central Idaho. University of California Publications in Geological Sciences 142, 1-61.
9. Basinger, J.F. 1976. Paleorosa similkameenensis, gen. et. sp. nov., permineralized flowers (Rosaceae) from the Eocene of British Columbia. Canadian Journal of Botany 54(20), 2293-2305. DOI 10.1139/b76-246
10. Basinger, J.F. 1981. The vegetative body of Metasequoia milleri from the Middle Eocene of southern British Columbia. Canadian Journal of Botany 59, 2379-2410.
11. Basinger, J.F. 1984. Seed cones of Metasequoia milleri from the middle Eocene of southern British Columbia. Canadian Journal of Botany 62(2), 281-289. DOI 10.1139/b84-045
12. Basinger, J.F. & Rothwell, G.W. 1977. Anatomically preserved plants from the Middle Eocene (Allenby Formation) of British Columbia. Canadian Journal of Botany 55, 1984-1990. DOI 10.1139/b77-223
13. Becker, H.F. 1961. Oligocene plants from the Upper Ruby River Basin, southwestern Montana. The Geological Society of America Memoir 82, 1-127.
14. Becker, H.F. 1969. Fossil plants of the Tertiary Beaverhead Basins in southwestern Montana. Palaeontographica, Abteilung B 127,1-142.
15. Becker, H.F. 1972. The Metzel Ranch flora of the Upper Ruby River Basin, southwestern Montana. Palaeontographica, Abteilung 141B, 1-61.
16. Becker, H.F. 1973. The York Ranch flora of the Upper Ruby River Basin, southwestern Montana. Palaeontographica, Abteilung B 143, 18-93.
17. Benedict, J.C., DeVore, M.L. & Pigg, K.B. 2008. Rosaceous flowers resembling Prunus from the Eocene Republic flora of eastern Washington State, USA. Botany 2008, Vancouver, BC, July 2008, Abstract.
18. Berry, E.W. 1916. The Lower Eocene floras of southeastern North America. United States Geological Survey Professional Paper 91, 1-481.
19. Berry, E.W. 1922. Additions to the flora of the Wilcox Group. United States Geological Survey Professional Paper131-A, 1-21.
20. Berry, E.W. 1924. The Middle and Upper Eocene floras of southeastern North America. United States Geological Survey Professional Paper 92, 1-206.
21. Berry, E.W. 1925. The flora of the Ripley Formation. United States Geological Survey Professional Paper 136, 1-94.
22. Berry, E.W. 1930. Revision of the Lower Eocene Wilcox flora of the southeastern states, with descriptions of new species, chiefly from Tennessee and Kentucky. United States Geological Survey Professional Paper 156, 1-196.
23. Berry, E.W. 1941. Additions to the Wilcox Flora from Kentucky and Texas. United States Geological Survey Professional Paper 193-E, 83-99.
24. Bjorholm, S.W., Svenning, J.-C., Baker, W.J., Skov, F. & Balslev, H. 2006. Botanical Journal of the Linnaean Society 151(1), 113-125. DOI 10.1111/j.1095-8339.2006.00527.x
25. Blakey, R. 2005. Paleogeography and geological history of North America. http://jan.ucc.nau.edu/~rcb7 (accessed September 1, 2007).
26. Boucher, L.D., Manchester, S.R. & Judd, W.S. 2003. An extinct genus of Salicaceae based on twigs with attached flowers, fruits, and foliage from the Eocene Green River Formation of Utah and Colorado, USA. American Journal of Botany 90(9), 1389-1399. DOI 10.3732/ajb.90.9.1389
27. Brown, D.E., Carmony, N.B., Lowe, C.H.&Turner, R.M.1976. A second locality for native California fan palms (Washingtonia filifera) in Arizona. Arizona Academy of Science 11(1), 37-41.
28. Brown, R.W.1934.There cognizable species of the Green Riverflora. United States Geological Survey Professional Paper 185-C, 43-77.
29. Brown, R.W. 1962. Paleocene floras of the Rocky Mountains and Great Plains. United States Geological Survey Professional Paper 375, 1-119.
30. Brownfield, M.E., Affolter, R.H., Cathcart, J.D., Johnson, S.Y., Brownfield, I.K., Rice, C.A. & Zielinski, R.A. 2005. Geologic setting and characterization of coal and the modes of occurrence of selected elements from the Franklin coal zone, Puget Group, John Henry No. 1 mine, King County, Washington. International Journal of Coal Geology 63, 247-275. DOI 10.1016/j.coal.2005.03.021
31. Burnham, R.J. 1986. Foliar morphological analysis of the Ulmoideae (Ulmaceae) from the early Tertiary of western North America. Palaeontographica, Abteilung B 201, 135-167.
32. Burnham, R.J. 1990. Some late Eocene depositional environments of the coal-bearing Puget Group of western Washington State, USA. International Journal of Coal Geology 15(1), 27-51. DOI 10.1016/0166-5162(90)90062-4
33. Burnham, R.J. 1994. Paleoecological and floristic heterogeneity in the plant-fossil record an analysis based on the Eocene of Washington. United States Geological Survey Bulletin 2085-B, B1-B36.
34. Call, V.B. & Dilcher, D.L. 1992. Investigations of angiosperms from the Eocene of southeastern North America: samaras of Fraxinus wilcoxiana Berry. Review of Palaeobotany and Palynology 74(3-4), 249-266. DOI 10.1016/0034-6667(92)90010-E
35. Call, V.B. & Dilcher, D.L. 1994. Parvileguminophyllum coloradensis, a new combination for Mimosites coloradensis Knowlton, Green River Formation of Utah and Colorado. Review of Palaeobotany and Palynology 80(3-4), 305-310. DOI 10.1016/0034-6667(94)90007-8
36. Call, V.B. & Dilcher, D.L. 1995. Fossil Ptelea samaras (Rutaceae) in North America. American Journal of Botany 82(8), 1069-1073. DOI 10.2307/2446237
37. Call, V.B. & Dilcher, D.L. 1997. The fossil record of Eucommia (Eucommiaceae) in North America. American Journal of Botany 84(6), 798-814. DOI 10.2307/2445816
38. Carrol, A.R. & Bohacs, K.M. 1999. Stratigraphic classification of ancient lakes: Balancing tectonic and climatic controls. Geology 27(2), 99-102. DOI 10.1130/0091-7613(1999)027<0099:SCOALB>2.3.CO;2
39. Cevallos-Ferriz, S.R.S., Erwin, D.M. & Stockey, R.A. 1993. Further observations on Paleorosa similkameenensis (Rosaceae) from the middle Eocene Princeton chert of British Columbia, Canada. Review of Palaeobotany and Palynology 78(3/4), 277-291. DOI 10.1016/0034-6667(93)90068-6
40. Cevallos-Ferriz, S.R.S. & Stockey, R.A. 1988. Permineralized fruits and seeds from the Princeton chert (Middle Eocene) of British Columbia Lythraceae. Canadian Journal of Botany 66(2), 303-312. DOI 10.1139/b88-050
41. Cevallos-Ferriz, S.R.S., Stockey, R.A. & Pigg, K.B. 1991. The Princeton chert: evidence for in situ aquatic plants. Review of Palaeobotany and Palynology 70, 173-185. DOI 10.1016/0034-6667(91)90085-H
42. Chaney, R.W. 1920. The flora of the Eagle Creek Formation. Contributions to the Walker Museum 2, 115-181.
43. Chaney, R.W. 1924. A comparative study of the Bridge Creek flora and the modern redwood forest. Carnegie Institute of Washington Contributions to Paleontology 349, 1-22.
44. Chaney, R.W. & Sanborn, E.I. 1933. The Goshen flora of west central Oregon. Carnegie Institute of Washington Contributions to Paleontology 439, 1-103.
45. Cockburn, T. & Haggart, J.W. 2007. Preliminary report on the marine fauna of the Appian Way Eocene site, p. 23. In Programme and abstracts, Seventh British Columbia Paleontological Symposium, May 18-21, Vancouver.
46. Collinson, M.E. 1983. Fossil plants of the London Clay. 121 pp. The Palaeontological Association, London.
47. Collinson, M.E. 1993. Taphonomy and fruiting biology of recent and fossil Nypa. Special Papers in Palaeontology 49, 165-180.
48. Collinson, M.E., Manchester, S.R., Wilde, V. & Hayes, P. 2010. Fruit and seed floras from exceptionally preserved biotas in the European Paleogene. Bulletin of Geosciences 85(1), 155-162. DOI 10.3140/bull.geosci.1155
49. Crane, P.R. & Stockey, R.A. 1986. Betula leaves and reproductive structures from the Middle Eocene of British Columbia, Canada. Canadian Journal of Botany 65, 2490-2500. DOI 10.1139/b87-338
50. Crepet, W.L. & Daghlian, C.P. 1980. Castaneoid inflorescences from the middle Eocene of Tennessee and the diagnostic value of pollen (at the subfamily level) in the Fagaceae. American Journal of Botany 67(5), 739-757. DOI 10.2307/2442667
51. Crepet, W.L. & Daghlian, C.P. 1982. Euphorboid inflorescences from the Middle Eocene Claiborne formation. American Journal of Botany 69(2), 258-266. DOI 10.2307/2443013
52. Crepet, W.L. & Dilcher, D.L. 1977. Investigations of angiosperms from the Eocene of North America: a mimosoid inflorescence. American Journal of Botany 64(6), 714-725. DOI 10.2307/2441724
53. Crepet, W., Dilcher, D.L. & Potter, F.W. 1975. Investigations of angiosperms from the Eocene of North America: a catkin with juglandaceous affinities. American Journal of Botany 62(8),813-823. DOI 10.2307/2441892
54. Crepet, W.L. & Nixon, K.C. 1989a. Earliest megafossil evidence of Fagaceae: phylogenetic and biogeographic implications. American Journal of Botany 76(6), 842-855. DOI 10.2307/2444540
55. Crepet, W.L. & Nixon, K.C. 1989b. Extinct transitional Fagaceae from the Oligocene and their phylogenetic implications. American Journal of Botany 76(10), 1493-1505. DOI 10.2307/2444437
56. Daghlian, C.P. 1978. Coryphoid palms from the Lower and Middle Eocene of southeastern North America. Palaeontographica, Abteilung B 166, 44-82.
57. Daghlian, C.P. & Crepet, W.L. 1983. Oak catkins, leaves and fruits from the Oligocene Catahoula Formation and their evolutionary significance. American Journal of Botany 70(5), 639-649. DOI 10.2307/2443119
58. Daghlian, C.P., Crepet, W.L. & Delevoryas, T. 1980. Investigations of Tertiary angiosperms: a new flora including Eomimsoidea plumosa from the Oligocene of eastern Texas. American Journal of Botany 67(3), 309-320. DOI 10.2307/2442341
59. Denk, T. & Dillhoff, R.M. 2005. Ulmus leaves and fruits from the Early-Middle Eocene of northwestern North America: systematics and implications for character evolution within Ulmaceae. Canadian Journal of Botany 83(12), 1663-1681. DOI 10.1139/b05-122
60. DeVore, M.L., Moore, S.M., Pigg, K.B. & Wehr, W.C. 2004. Fossil Neviusia leaves (Rosaceae: Kerriae) from the lower-middle Eocene of southern British Columbia. Rhodora 106(927), 197-209.
61. DeVore, M.L. & Pigg, K.B. 2007. A brief review of the fossil history of the family Rosaceae with a focus on the Eocene Okanogan Highlands of eastern Washington State, USA, and British Columbia, Canada. Plant Systematics & Evolution 266(1-2), 45-57. DOI 10.1007/s00606-007-0540-3
62. DeVore, M.L. & Pigg, K.B. 2008. Aquatic plants of the Eocene Republic, Washington flora and their significance to interpreting ancient lacustrine environments. Symposium: What Good are (Fossil) Plants Anyway? New Methods for Investigating Old Problems. Geological Society of America, Houston, October 2008, Abstract.
63. DeVore, M.L., Pigg, K.B. & Wehr, W.C. 2005. Systematics and phytogeography of selected Okanagan Highlands plants. Canadian Journal of Earth Sciences 42(2), 205-214. DOI 10.1139/e04-072
64. Dilcher, D.L. 1963a. Cuticular analysis of Eocene leaves of Ocotea obtusifolia. American Journal of Botany 50(1), 1-8. DOI 10.2307/2439856
65. Dilcher, D.L. 1963b. Eocene epiphyllous fungi. Science 142(3593),667-669. DOI 10.1126/science.142.3593.667
66. Dilcher, D.L. 1965. Epiphyllous fungi from Eocene deposits in western Tennessee, U.S.A. Palaeontographica, Abteilung B 116, 1-54.
67. Dilcher, D.L. 1969. Podocarpus from the Eocene of North America. Science 164(3877), 299-301. DOI 10.1126/science.164.3877.299
68. Dilcher, D.L. 1971. A revision of the Eocene floras of southeastern North America. The Palaeobotanist 20 (1), 7-18 (published in 1973).
69. Dilcher, D.L. 1973. A paleoclimatic interpretation of the Eocene floras of southeastern North America. Chapter 2, 39-59. In Graham, A. (ed.) Vegetation and vegetational history of northern Latin America. Elsevier, Amsterdam.
70. Dilcher, D.L. & Daghlian, C.P. 1977. Investigations of angiosperms from the Eocene of southeastern North America. Philodendron leaf remains. American Journal of Botany 64(5), 526-534. DOI 10.2307/2442000
71. Dilcher, D.L. & Dolph, G.E. 1970. Fossil leaves of Dendropanax from Eocene sediments of southeastern North America. American Journal of Botany 57(2), 153-160. DOI 10.2307/2440507
72. Dilcher, D.L. & Manchester, S.R. 1986. Investigations of angiosperms from the Eocene of North America: Leaves of the Engelhardieae (Juglandaceae). Botanical Gazette 147(2), 189-199. DOI 10.1086/337586
73. Dilcher, D.L. & Manchester, S.R. 1988. Investigations of the angiosperms from the Eocene of North America: A fruit belonging to Euphorbiaceae. Tertiary Research 9(1-4), 45-68.
74. Dilcher, D.L. & McQuade, J.F. 1967. A morphological study of Nyssa endocarps from Eocene deposits in western Tennessee. Bulletin of the Torrey Botanical Club 94(1), 35-40. DOI 10.2307/2483600
75. Dilcher, D.L. & Mehrotra, B. 1969. A study of leaf compressions of Knightiophyllum from Eocene deposits of southeastern North America. American Journal of Botany 56(8), 936-943. DOI 10.2307/2440635
76. Dilcher, D.L., Potter, F.W. & Crepet, W.L. 1976. Investigations of angiosperms from the Eocene of North America: Juglandaceous winged fruits. American Journal of Botany 63(5),532-544. DOI 10.2307/2441817
77. th International Organisation of Palaeobotany Conference, Bonn, August-September 2008, Abstract.
78. Dillhoff, R.M., Leopold, E.B. & Manchester, S.R. 2005. The McAbee flora of British Columbia and its relations to the Early-Middle Eocene Okanagan Highlands flora of the Pacific Northwest. Canadian Journal of Earth Sciences 42(2), 151-166. DOI 10.1139/e04-084
79. Elliott, L.L., Mindell, R.A. & Stockey, R.A. 2006. Beardia vancouverensis gen. et sp. nov. (Juglandaceae): permineralized fruits from the Eocene of British Columbia. American Journal of Botany 93(4), 557-565. DOI 10.3732/ajb.93.4.557.
80. Elsik, W.C. & Dilcher, D.L. 1974. Palynology and age of clays exposed in Lawrence Clay Pit, Henry County, Tennessee. Palaeontographica, Abteilung B 146, 65-87.
81. Erwin, D.M. & Stockey, R.A. 1990. Sapindaceous flowers from the Middle Eocene Princeton chert (Allenby Formation) of British Columbia, Canada. Canadian Journal of Botany 68(9), 2025-2034.
82. Erwin, D.M. & Stockey, R.A. 1994. Permineralized monocotyledons from the middle Eocene Princeton chert (Allenby Formation) of British Columbia: Arecaceae. Palaeontographica, Abteilung B 234, 19-40.
83. Evanhoff, E., Gregory-Wodzicki, K.M. & Johnson, K.R. (eds) 2001. Fossil flora and stratigraphy of the Florissant Formation, Colorado. Proceedings of the Denver Museum of Nature and Science 4(1).
84. Ewing, T.E. 1981. Regional stratigraphy and structural setting of the Kamloops Group, south-central British Columbia. Canadian Journal of Earth Sciences 18, 1464-1477.
85. Finkelstein, D.B., Hay, R.L. & Altaner, S.P. 1999. Origin and diagenesis of lacustrine sediments, upper Oligocene Creede Formation, southwestern Colorado. The Geological Society of America Bulletin 111(8), 1175-1191. DOI 10.1130/0016-7606(1999)111<1175:OADOLS>2.3.CO;2
86. nd). Geological Society of America Joint Annual Meeting, March 12-14, 2003, Memphis, Tennessee, Abstract.
87. Friedricksen, N.O. 1980. Sporomorphs from the Jackson Group (Upper Eocene) and adjacent strata of Mississippi and western Alabama. United States Geological Survey Professional Paper 1084, 1-75.
88. Friedricksen, N.O. 1981. Middle Eocene to early Oligocene plant communities of the Gulf Coast U.S., 493-549. In Gray, J. & Boucet, W.B.N. (eds) Communities of the Past. Hutchinson Ross, Stroudsbury, Pennsylvania.
89. Friedricksen, N.O. 1988. Sporomorph biostratigraphy, floral changes and paleoclimatology, Eocene and earliest Oligocene of the eastern Gulf Coast. United States Geological Survey Professional Paper 1448, 1-68.
90. Galloway, W.E. 1977. Catahoula Formation of the Texas Coastal Plain: depositional systems, composition, structural development, ground-water flow history, and uranium distribution. University of Texas Bureau of Economic Geology Report Investigation 87.
91. Gee, C. 2001. The mangrove palm Nypa in the geologic past of the New World. Wetlands Ecology and Management 9, 181-194. DOI 10.1023/A:1011148522181
92. Graham, A. 1995. Diversification of Gulf/Caribbean mangrove communities through Cenozoic time. Biotropica 27(1), 20-27. DOI 10.2307/2388899
93. Graham, A. 1999. Late Cretaceous and Cenozoic history of North American vegetation. 350 pp. Oxford University Press, Oxford, UK.
94. Greenwood, D.R., Archibald, S.B., Mathewes, R.W. & Moss, P.T. 2005. Fossil biotas from the Okanagan Highlands, southern British Columbia and northeastern Washington State: climates and ecosystems across an Eocene landscape. Canadian JournalofEarthSciences 42(2),167-185. DOI 10.1139/e04-100
95. Grote, P.J. & Dilcher, D.L. 1989. Investigations of angiosperms from the Eocene of North America: A new genus of Theaceae based on fruit and seed remains. Botanical Gazette 150(2), 190-206. DOI 10.1086/337764
96. Grote, P.J. & Dilcher, D.L. 1992. Fruits and seeds of Tribe Gordonieae (Theaceae) from the Eocene of North America. American Journal of Botany 79(7), 744-753. DOI 10.2307/2444939
97. Hay, R.L. 1962. Origin and digenetic alternation of the lower parts of the John Day Formation near Mitchell, Oregon, 191-216. In Engle, A.E.J., James, H.L. & Leonard, B.F. (eds) Petrologic studies: a volume in honor of A.F. Buddington. Geological Society of America.
98. Herendeen, P.S., Crepet, W.L. & Dilcher, D.L. 1992. The fossil history of the Leguminosae: phylogenetic and biogeographic implications, 303-316. In Herendeen, P.S. & Dilcher, D.L. (eds) Advances in Legume Systematics, The Fossil Record. The Royal Botanic Gardens, Kew.
99. Herendeen, P.S. & Dilcher, D.L. 1990a. Fossil mimisoid legumes from the Eocene and Oligocene of southeastern North America. Review of Palaeobotany and Palynology 62(3-4), 339-361. DOI 10.1016/0034-6667(90)90094-Y
100. Herendeen, P.S. & Dilcher, D.L. 1990b. Diplotropis (Leguminosae, Papilionoideae) from the Middle Eocene of southeastern North America. Systematic Botany 15(4), 526-533. DOI 10.2307/2419152
101. Herendeen, P.S. & Dilcher, D.L. 1990c. Reproductive and vegetative evidence for the occurrence of Crudia (Leguminosae, Caesalpinioideae) in the Eocene of southeastern North America. Botanical Gazette 151(3), 402-413. DOI 10.1086/337840
102. Herendeen, P.S. & Dilcher, D.L. 1991. Caesalpinia Subgenus Mezoneuron (Leguminosae, Caesalpinioideae) from the Tertiary of North America. American Journal of Botany 78(1), 1-12. DOI 10.2307/2445223
103. Herendeen, P.S., Les, D.H. & Dilcher, D.L. 1990. Fossil Ceratophyllum (Ceratophyllaceae) from the Tertiary of North America. American Journal of Botany 77(1), 7-16. DOI 10.2307/2444787
104. Hernandez-Castillo, G.R., Stockey, R.A. & Beard, G. 2005. Taxodiaceous pollen cones from the early Tertiary of British Columbia, Canada. International Journal of Plant Sciences 166, 339-346. DOI 10.1086/427485
105. Hickey, L.J. 1977. Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of western North Dakota. The Geological Society of America Memoir 150, 1-181.
106. Hills, L.V. & Baadsgaard, H. 1967. Potassium-argon dating of some Lower Tertiary strata in British Columbia. Bulletin of Canadian Petroleum Geology 15, 138-149.
107. Hollick, A. 1932. Descriptions of new species of Tertiary cycads, with a review of those previously recorded. Bulletin of the Torrey Botanical Club 59(4), 169-189. DOI 10.2307/2480541
108. Hopkins, D.J. & Johnson, K.R. 1997. First record of cycad leaves from the Eocene Republic flora. Washington Geology 25(4), 37.
109. Horsfield, B., Curry, D.J., Bohacs, K.M., Carroll, A.R., Littke, R., Mann, U., Radke, M., Schaefer, R.G., Isaksen, G.H., Schenk, H.J., Witte, E.G. & Rullkötter, J. 1994. Organic geochemistry of freshwater and alkaline lacustrine environments, Green River Formation, Wyoming. Organic Geochemistry 22(3-5), 415-440. DOI 10.1016/0146-6380(94)90117-1
110. Johnson, K.R. 1996. The role of the Republic flora in documenting the floristic evolution of the Northern Hemisphere. Washington Geology 24(2), 41-42.
111. Johnson, K.R., Bateman, W., Graham, M., Manchester, S.R. & Handley, B. 2002. The Parachute Creek Atlas Project: an overview of the megaflora of the Green River Formation from Colorado and Utah. Geological Society of America Annual Meeting, Denver, October30, 2002, PaperNo.210-10, Abstract.
112. Johnson, S.Y. 1984a. Evidence for a margin-truncations transcurrent fault (pre-late Eocene) in western Washington. Geology 12(9), 538-541. DOI 10.1130/0091-7613(1984)12<538:EFAMTF>2.0.CO;2
113. Johnson, S.Y. 1984b. Stratigraphy, age, and paleogeography of the Eocene Chuckanut Formation, northwest Washington. Canadian Journal of Earth Sciences 21, 92-106.
114. Johnson, S.Y. 1985. Eocene strike-slip faulting and nonmarine basin formation in Washington, 283-302. In Biddle, K.T. & Christie-Blick, N. (eds) Strike-slip deformation, basin formation, and sedimentation. Society of Economic Paleontologists and Mineralogists Special Publication 37.
115. Jones, J.H. & Dilcher, D.L. 1980. Investigations of angiosperms from the Eocene of North America: Rhamnus marginatus (Rhamnaceae) reexamined. American Journal of Botany 67(6), 959-967. DOI 10.2307/2442438
116. Jones, J.H. & Dilcher, D.L. 1988. A study of the "Dryophyllum" leaf forms from the Paleogene of southeastern North America. Palaeontographica, Abteilung B 208, 53-80.
117. Karafit, S.J., Rothwell, G.W., Stockey, R A. & Nishida, H. 2006. Evidence for sympodial vascular architecture in a filicalean fern rhizome: Dickwhitea allenbyensis gen. et sp. nov. (Athyriaceae). International Journal of Plant Sciences 167(3), 721-727. DOI 10.1086/501036
118. Klymiuk, A.A., Stockey, R.A. & Rothwell, G.W. 2009. Evidence for phylogenetic relationships among conifers: the first organismal concept for an extinct species of Pinus. Botany & Mycology 2009, Abstracts.
119. Knowlton, F.H. 1893. Notes on a few fossil plants from the Fort Union group of Montana, with a description of one new species. United States National Museum Proceedings 16, 33-36.
120. Kvaček, Z. 2002. A new Tertiary Ceratozamia (Zamiaceae, Cycadopsida) from the European Oligocene. Flora 197, 303-316.
121. Kvaček, Z. & Manchester, S.R. 1999. Eostangeria Barthel (extinct Cycadales) from the Paleogene of western North America and Europe. International Journal of Plant Sciences 160(3), 621-629. DOI 10.1086/314152
122. Lakhanpal, R.N. 1958. The Rujada flora of western central Oregon. University of California Publications in Geological Sciences 35(1), 1-65.
123. Larsen, D. & Smith, G.A. 1999. Sublacustrine-fan deposition in the Oligocene Creede Formation, Colorado, U.S.A. Journal of Sedimentary Research 69(3), 675-689.
124. Leopold, E.B. & MacGinitie, H.D. 1972. Development and affinities of Tertiary floras in the Rocky Mountains, 147-200. In Graham, A. (ed.) Floristics and Paleofloristics of Asia and Eastern North America. Elsevier, Amsterdam.
125. Leopold, E.B. & Clay-Poole, S. 2001. Florissant leaf and pollen floras of Colorado compared: climatic implications, 17-20. In Evanoff, E., Gregory-Wodzicki, K.M. & Johnson, K.R. (eds) Fossil flora and stratigraphy of the Florissant Formation, Colorado. Proceedings of the Denver Museum of Nature and Science 4(1).
126. Little, S.A. & Stockey, R.A. 2003. Vegetative growth of Decodon allenbyensis (Lythraceae) from the Middle Eocene Princeton chert with anatomical comparisons to D. verticillatus. International Journal of Plant Sciences 164(3), 453-469. DOI 10.1086/367811
127. Little, S.A. & Stockey, R.A. 2005. Morphogenesis of the specialized peridermal tissues in Decodon allenbyensis from the Middle Eocene Princeton chert. IAWA (International Association of Wood Anatomists) Bulletin 27, 73-87.
128. Little, S.A., Stockey, R.A. & Beard, G. 2001. Angiosperm fruits and seeds from the Eocene of Vancouver Island. Botany 2001, Abstract.
129. Little, S.A., Stockey, R.A. & Keating, R.C. 2004. Duabangalike leaves from the Middle Eocene Princeton chert and comparative leaf histology of Lythraceae sensu lato. American Journal of Botany 91(7), 1126-1139. DOI 10.3732/ajb.91.7.1126
130. Little, S.A., Stockey, R.A. & Penner, B. 2009. Anatomy and development of fruits of Lauraceae from the Middle Eocene Princeton chert. American Journal of Botany 96(3), 637-651. DOI 10.3732/ajb.0800318
131. Lott, T.A., Manchester, S.R. & Dilcher, D.L. 1998. A unique and complete polemoniaceous plant from the middle Eocene of Utah, USA. Review of Palaeobotany and Palynology 104(1), 39-49. DOI 10.1016/S0034-6667(98)00048-7.
132. MacGinitie, H.D. 1941. Flora of Weaverville Beds of Trinity County, California. Carnegie Institute of Washington Publication 534, 1-167.
133. MacGinitie, H.D. 1953. Fossil plants of the Florissant Beds, Colorado. Contributions to Paleontology. Carnegie Institute of Washington Publication 599, 1-197.
134. MacGinitie, H.D. 1969. The Eocene Green River flora of northwestern Colorado and northeastern Utah. University of California Publications in Geological Sciences 83, 1-140.
135. 39Ar ages of selected tuffs of the Green River Formation: implications for interbasin and intrabasin correlations. Geological Society of America Annual Meeting, Denver, October 30, 2002, Paper No. 244-19, Abstract.
136. Manchester, S.R. 1989. Attached reproductive and vegetative remains of the extinct American-European genus Cedrelospermum (Ulmaceae) from the Early Tertiary of Utah and Colorado, USA. American Journal of Botany 76(2), 256-276. DOI 10.2307/2444668
137. Manchester, S.R. 1992. Flowers, fruits and pollen of Florissantia, an extinct malvalean genus from the Eocene and Oligocene of western North America. American Journal of Botany 79(9), 996-1008. DOI 10.2307/2444909
138. Manchester, S.R. 1994. Fruits and seeds of the middle Eocene Nut Beds flora, Clarno Formation, Oregon. Palaeontographica Americana 58, 1-205.
139. Manchester, S.R. 1999. Biogeographical relationships of North American Tertiary floras. Annals of the Missouri Botanical Garden 86(2), 472-522. DOI 10.2307/2666183
140. Manchester, S.R. 2001. Update on the megafossil flora of Florissant, Colorado, USA, 137-161. In Evanoff, E., Gregory-Wodzicki, K.M. & Johnson, K.R. (eds) Fossil flora and stratigraphy of the Florissant Formation, Colorado. Proceedings of the Denver Museum of Nature and Science 4(1).
141. Manchester, S.R., Chen, Z., Lu, A. & Uemura, K. 2009. Eastern Asian endemic seed plant genera and their paleogeographic history thoroughout the Northern Hemisphere. Journal of Systematics and Evolution 47(1), 1-42. DOI 10.1111/j.1759-6831.2009.00001.x
142. Manchester, S.R. & Crane, P.R. 1983. Attached leaves, inflorescences, and fruits of Fagopsis, an extinct genus of fagaceous affinity from the Oligocene Florissant Flora of Colorado, U.S.A. American Journal of Botany 70(8),1147-1164. DOI 10.2307/2443285
143. Manchester, S.R. & Crane, P.R. 1987. A new genus of Betulaceae from the Oligocene of western North America. Botanical Gazette 148(2), 263-273. DOI 10.1086/337654
144. th Annual Mid-Continent Paleobotanical Colloquium, Southern Methodist University, Dallas, March 16-18, 2007, Abstract.
145. Manchester, S.R., Dilcher, D.L. & Tidwell, W.D. 1986. Interconnected reproductive and vegetative remains of Populus (Salicaceae) from the Middle Eocene Green River Formation, northeastern Utah. American Journal of Botany 73(1), 156-160. DOI 10.2307/2444288
146. Manchester, S.R., Dilcher, D.L. & Wing, S.L. 1998. Attached leaves and fruits of myrtaceous affinity from the Middle Eocene of Colorado, USA. Review of Palaeobotany and Palynology 102(3-4), 153-163. DOI 10.1016/S0034-6667(97)00056-0
147. Manchester, S.R. & Dillhoff, R.M. 2004. Fagus (Fagaceae) fruits, foliage, and pollen from the Middle Eocene of Pacific northwestern North America. Canadian Journal of Botany 82(10),1509-1517. DOI 10.1139/b04-112
148. Manchester, S.R. & Pigg, K.B. 2008. The Eocene mystery flower of McAbee, British Columbia. Botany 86(9), 1034-1038. DOI 10.1139/B08-044
149. Manchester, S.R. & Zavada, M.S. 1987. Lygodium foliage with intact sorophores from the Eocene of Wyoming. Botanical Gazette 148(3), 392-399. DOI 10.1086/337668
150. Manos, P.S. & Stanford, A.M. 2001. The historical biogeography of Fagaceae: Tracking the Tertiary history of temperate and subtropical forests of the Northern Hemisphere. International Journal of Plant Sciences 162(S6), S77-S93. DOI 10.1086/323280
151. Manos, P.S., Soltis, P.S., Soltis, D.E, Manchester, S.R., Oh, Sang-Hu, Bell, D.B., Dilcher, D.L. & Stone, D.E. 2007. Phylogeny of extant and fossil Juglandaceae inferred from the integration of molecular and morphological data sets. Systematic Biology 56(3), 412-430. DOI 10.1080/10635150701408523
152. Mathewes, R.W. & Greenwood, D.R. 2007. Early Eocene Quilcena fossil locality, British Columbia: Paleoclimate and biogeography. Geological Society of America, Abstracts.
153. Matthews, W.H. 1991. Physiographic evolution of the Canadian Cordillera, 403-418. In Gabrielse, H. & Yorath, C.J. (eds) Geology of the Cordilleran orogen in Canada. Geological Survey of Canada, Geology of Canada (4).
154. Meyer, H.W. 2003. The fossils of Florissant. 258 pp. Smithsonian Books, Washington, DC.
155. Meyer, H.W. 2004. Plant community dynamics of the EoceneOligocene transition. Geological Society of America Annual Meeting, Denver, November 7-10, 2004, Paper No. 14-11, Abstract.
156. Meyer, H.W. & Manchester, S.R. 1997. The Oligocene Bridge Creek flora of the John Day Formation, Oregon. 195 pp. University of California Press, Berkeley.
157. Miller, C.N., Jr. 1969. Pinus avonensis, a new species of petrified cones from the Oligocene of western Montana. American Journal of Botany 56(9), 972-978. DOI 10.2307/2440918
158. Miller, C.N., Jr. 1970. Picea diettertiana, a new species of petrified cones from the Oligocene of western Montana. American Journal of Botany 57(5), 579-585. DOI 10.2307/2441056
159. Miller, C.N., Jr. 1973. Silicified cones and vegetative remains of Pinus from the Eocene of British Columbia. Contributions to the University of Michigan Museum of Paleontology 24, 101-118.
160. Miller, C.N., Jr. 1989. A new species of Picea based on silicified seed cones from teh Oligocene of Washington. American Journal of Botany 76(5), 747-754. DOI 10.2307/2444421
161. Miller, C.N., Jr. 1990. Stems and leaves of Cunninghamiostrobus goedertii from the Oligocene of Washington. American Journal of Botany 77(7), 963-971. DOI 10.2307/2444512
162. th Annual Mid-Continent Paleobotanical Colloquium, Southern Methodist University, Dallas, March 16-18, 2007, Abstract.
163. Mindall, R.A., Stockey, R.A. & Beard, G. 2006. Anatomically preserved staminate infloescences of Gynoplatananthus oysterbayensis gen. et sp. nov. (Platanaceae) and associated pistillate fructifications from the Eocene of Vancouver Island, British Columbia. International Journal of Plant Sciences 167(3),591-600. DOI 10.1086/500956
164. Mindall, R.A., Stockey, R.A. & Beard, G. 2007. Cascadiacarpa spinosa gen. et sp. nov. (Fagaceae): castaneoid fruits from the Eocene of Vancouver Island, Canada. American Journal of Botany 94(3), 351-361. DOI 10.3732/ajb.94.3.351.
165. Mindall, R.A., Stockey, R.A. & Beard, G. 2009. Permineralized Fagus nuts from the Eocene Vancouver Island, Canada. International Journal of Plant Sciences 170 (4), 551-560. DOI 10.1086/596335
166. Mindall, R.A., Stockey, R.A., Rothwell, G.W. & Beard, G. 2005. Gleichenia appianensis sp. nov. (Gleicheniaceae): a permineralized rhizome and associated vegetative remains from the Eocene of Vancouver Island, British Columbia. International Journal of Plant Sciences 167(3),639-647. DOI 10.1086/500997
167. Moore, B.R., Dilcher, D.L. & Gibson, M.A. 2003. Paleoenvironment, depositional setting, and plant fossil diversity found in the Claiborne Formation (Middle Eocene) clay deposits of western Tennessee, 187-198. In Field Trip Guidebook, Joint Meeting South-Central and Southeastern Sections. Geological Society of America (Department of Environment and Conservation, Division of Geology), State of Tennessee, Nashville.
168. th Annual Meeting, April 5-6, 2001, Abstracts.
169. Mustoe, G.E. 2001. Washington's fossil florests. Washington Geology 29(1/2), 10-20.
170. Mustoe, G.E. 2002a. Hydrangea fossils from the early Tertiary Chuckanut Formation. Washington Geology 30(3/4), 17-20.
171. Mustoe, G.E. 2002b. Eocene Ginkgo leaf fossils from the Pacific Northwest. Canadian Journal of Botany 80(10), 1078-1087. DOI 10.1139/b02-097
172. Mustoe, G.E. 2005. Diatomaceous origin of siliceous shale in Eocene lake beds of central British Columbia. Canadian Journal of Earth Sciences 42(2), 231-241. DOI 10.1139/e04-099.
173. Mustoe, G.E., Dillhoff, R.M. & Dillhoff, T.A. 2007. Geology and paleontology of the early Tertiary Chuckanut Formation, 121-135. In Stelling, P. & Tucker, D.S. (eds) Floods, Faults and Fire: Geological Field Trips in Washington State and Southwest British Columbia. Geological Society of America Field Guide 9.
174. Mustoe, G.E. & Gannaway, W.L. 1995. Palm fossils from northwest Washington. Washington Geology 23(2), 21-26.
175. Mustoe, G.E. & Gannaway, W.L. 1997. Paleogeography and paleontology of the early Tertiary Chuckanut Formation, northwest Washington. Washington Geology 25(3), 3-18.
176. Myers, J.A. 2006. The latest Eocene Badger's Nose flora of the Warner Mountains, northeast California: The "in between" flora. Paleobios 26(1), 11-29.
177. Niesen, P.L. 1969. Stratigraphic relationships of the Florissant Lake Beds to the Thirtynine Mile volcanic area of central Colorado. 65 pp. Unpublished M.Sc. thesis, New Mexico Institute of Mining and Technology.
178. 39Ar ages of Chadronian tuffs in the White River Formation of Wyoming. Geological Society of America Abstracts Programs 27(3), A77.
179. Pabst, M.B. 1968. The flora of the Chuckanut Formation of northwestern Washington, the Equisetales, Filicales, and Coniferales. University of California Publications of Geological Sciences 227, 166-169.
180. Pigg, K.B. & DeVore, M.L. 2010. Floristic composition and transitions of Late Paleocene to Early Eocene floras in western North America. Bulletin of Geosciences 85(1), 135-154. DOI 10.3140/bull.geosci.1136
181. Pigg, K.B. & DeVore, M.L. 2007. East meets West: the contrasting contributions of David L. Dilcher and Jack A. Wolfe to Eocene systematic paleobotany in North America. In Jarzen, D.M., Retallack, G., Jarzen, S. & Manchester, S.R. (eds) Advances in Mesozoic and Cenozoic Paleobotany. Courier Forschungsinstitut Senckenberg 258, 85-94.
182. Pigg, K.B., DeVore, M.L., Dilcher, D.L. & Freile, D. 2001a. Fagaceous infructescences from the Oligocene Catahoula Formation of Texas. Botany 2001, Abstracts, 68.
183. Pigg, K.B., Dillhoff, R.M., DeVore, M.L. & Wehr, W.C. 2007. New diversity among the Trochodendraceae from the Early/Middle Eocene Okanogan Highlands of British Columbia, Canada and northeastern Washington State, United States. International Journal of Plant Sciences 168(4), 521-532. DOI 10.1086/512104
184. Pigg, K.B., Manchester, S.R. & Wehr, W.C. 2003. Corylus, Carpinus and Palaeocarpinus (Betulaceae) from the Middle Eocene Klondike Mountain and Allenby Formations of northwestern North America. International Journal of Plant Sciences 164(5), 807-822. DOI 10.1086/376816
185. Pigg, K.B. & Stockey, R.A. 1996. The significance of the Princeton chert permineralized flora to the Middle Eocene upland biota of the Okanogan Highlands. Washington Geology 4(2), 32-36.
186. Pigg, K.B. & Wehr, W.C. 2002. Tertiary flowers, fruits and seeds of Washington State and adjacent areas. Part III. Washington Geology 30(3/4), 3-16.
187. Pigg, K.B., Wehr, W.C. & Ickert-Bond, S.M. 2001b. Trochodendron and Nordenskioldia (Trochodendraceae) from the Middle Eocene of Washington State, U.S.A. International Journal of Plant Sciences 162(5), 1187-1198. DOI 10.1086/321927
188. Potbury, S.S. 1935. The La Porte flora of Plumas County, California, 29-81. In Sanborn, E.L., Potbury, S.S. & MacGinitie, H.D. (eds) Carnegie Institution of Washington Contributions to Paleontology 465.
189. Potter, F. & Dilcher, D.L. 1980. Biostratigraphic analysis of Middle Eocene floras of western Kentucky and Tennessee. Chapter 8, 211-225. In Dilcher, D.L. & Taylor, T.N. (eds) Biostratigraphy of Fossil Plants: Successional and Paleoecological Analysis. Dowden, Hutchinson & Ross, Stroudsburg, Pennsylvania.
190. Radtke, M.G., Pigg, K.B. & Wehr, W.C. 2005. Fossil Corylopsis and Fothergilla leaves (Hamamelidaceae) from the Lower Eocene flora of Republic, Washington, U.S.A., and their evolutionary and biogeographic significance. International Journal of PlantScience 166(2),347-356. DOI 10.1086/427483
191. Ramírez-Peña, D.L., Hernandez-Castillo, G.R. & Stockey, R.A. 2009. A new ovulate cone (Cupressaceae: Sequoioideae) from the Appian Way (Eocene), British Columbia, Canada. Botany 2009, Abstracts.
192. Rankin, B.D., Stockey, R.A. & Beard, G. 2008. Fruits of Icacinaceae from the Eocene Appian Way locality. International Journal of Plant Sciences 169(2), 305-314. DOI 10.1086/523876
193. Ratte, J.C. & Steven, T.A. 1967. Ash flows and related volcanic rocks associated with the Creede Caldera, San Juan Mountains, Colorado. United States Geological Survey Professional Paper 524-H, H1-H58.
194. Reid, E.M. & Chandler, M.E.J. 1933. The London Clay flora. 561 pp. British Museum of Natural History, London.
195. Reineck, H.E. & Singh, I.B. 1980. Depositional Sedimentary Environments. 549 pp. Springer-Verlag, New York.
196. Robinson, P.T., Brem, G.F. & McKee, E.H. 1984. John Day Formation of Oregon: A distal record of early Cascade volcanism. Geology 12(4), 229-232. DOI 10.1130/0091-7613(1984)12<229:JDFOOA>2.0.CO;2
197. Robinson, P.T., Walker, G.W. & McKee, E.H. 1990. Eocene(?), Oligocene and lower Miocene rocks of the Blue Mountains region, 29-61. In Walker, G.W. (ed.) Geology of the Blue Mountains region. United States Geological Survey Professional Paper 1437.
198. Robison, C.R. & Person, C.P. 1973. A silicified semiaquatic dicotyledon from the Eocene Allenby Formation of British Columbia. Canadian Journal of Botany 51(7), 1373-1377. DOI 10.1139/b73-172
199. Roehler, H.W. 1993. Eocene climates, depositional environments, and geography, greater Green River basin, Wyoming, Utah, and Colorado. United States Geological Survey Professional Paper 1506-F, 1-74.
200. Roth, J. & Dilcher, D.L. 1979. Investigations of angiosperms from the Eocene of North America: stipulate leaves of the Rubiaceae. American Journal of Botany 66(10), 1194-1207. DOI 10.2307/2442218
201. Rothwell, G.W. & Basinger, J.F. 1979. Metasequoia milleri n. sp., anatomically preserved pollen cones from the middle Eocene (Allenby Formation) of British Columbia. Canadian Journal of Botany 57(8), 958-970. DOI 10.1139/b79-118
202. Rothwell, G.W. & Stockey, R.A. 1989. Onoclea sensibilis in the Paleocene of North America, a dramatic example of structural and ecological stasis. Review of Palaeobotany and Palynology 70(1-2), 113-124.
203. Sanborn, E.I. 1935. The Comstock flora of west central Oregon, 1-28. In Sanborn, E.L., Potbury, S.S. & MacGinitie, H.D. (eds) Carnegie Institution of Washington Contributions to Paleontology 465.
204. Santiago-Valentin, E. & Olmstead, R.G. 2004. Historical biogeography of Caribbean plants: introduction to current knowledge and possibilities from a phylogenetic perspective. Taxon 53(2), 299-319. DOI 10.2307/4135610
205. Schorn, H.E. 1998. Holodiscus lisii (Rosaceae): a new species of ocean spray from the late Eocene Florissant Formation, Colorado, USA. PaleoBios 18, 21-24.
206. Schorn, H.E. & Wehr, W.C. 1996. The conifer flora from the Eocene uplands at Republic, Washington. Washington Geology 24(2),22-24.
207. Schweitzer, C.E., Feldman, R.M., Farn, J., Hessin, W.A., Hetrick, S.W., Nyborg, T.G. & Ross, R.L.M. 2003. Cretaceous and Eocene decapod crustaceans from southern Vancouver Island, British Columbia, Canada. 66 pp. National Research Council, Ottawa.
208. Smith, G.A., Manchester, S.R., Ashwill, M., McIntosh, W.C. & Conrey, R.M. 1998. Late Eocene-early Oligocene tectonism, volcanism, and floristic change near Gray Butte, central Oregon. Geological Society of America Bulletin 100, 759-778. DOI 10.1130/0016-7606(1998)110<0759:LEEOTV>2.3.CO;2
209. Smith, H V. 1938. Some new and interesting Late Tertiary plants from Sucker Creek, Idaho-Oregon boundary. Bulletin of the Torrey Botanical Club 65, 557-564. DOI 10.2307/2480794
210. Smith, R., Greenwood, D.R. & Basinger, J.F. 2007. Forest dynamics during Eocene greenhouse conditions: assessing ecosystem resilience and diversity in the megafloral record of the Okanagan Highlands, British Columbia. Geological Society of America Annual Meeting, Denver, 28-31 October 2007, Paper No. 112-4, Abstract.
211. Smith, S.Y. & Stockey, R.A. 2007a. Establishing a fossil record for the perianthless Piperales: Saururus tuckerae sp. nov. (Saururaceae) from the Middle Eocene Princeton chert. American Journal of Botany 94(10), 1642-1657. DOI 10.3732/ajb.94.10.1642
212. Smith, S.Y. & Stockey, R.A. 2007b. Pollen morphology and ultrastructure of Saururaceae. Grana 46, 250-267. DOI 10.1080/00173130701780427
213. Smith, S.Y., Stockey, R.A., Nishida, H. & Rothwell, G.W. 2006. Trawetsia princetonensis gen. et sp. nov. (Blechnaceae): a permineralized fern from the Middle Eocene Princeton Chert. International Journal of Plant Sciences 167(3), 711-719. DOI 10.1086/501034
214. Steenbock, C.M., Stockey, R.A., Beard, G. & Tomescu, A. 2009. Anatomically preserved fossil moss gametophytes from the Eocene of Vancouver Island, British Columbia, Canada. Botany & Mycology 2009, Snowbird, Utah, July 25-27, Abstract.
215. Stockey, R.A. 1987. A permineralized flower from the Middle Eocene of British Columbia. American Journal of Botany 74(12),1878-1887. DOI 10.2307/2443970
216. Stockey, R.A. 2001. Princeton chert, 359-362. In Briggs, D.H. (ed.) Palaeobiology II. Blackwell Science.
217. Stockey, R.A., Nishida, H. & Rothwell, G.W. 1999. Permineralized ferns from the Middle Eocene Princeton chert. I. Makotopteris princetonensis gen. et sp. nov. (Athyriaceae). International Journal of Plant Sciences 160(5), 1047-1055.
218. Stockey, R.A. & Pigg, K.B. 1991. Flowers and fruits of Princetonia allenbyensis (Magnoliopsida family indet.) from the Middle Eocene Princeton chert of British Columbia. Review of Palaeobotany and Palynology 70, 163-172. DOI 10.1016/0034-6667(91)90084-G
219. Stockey, R.A. & Pigg, K.B. 1994. Vegetative growth of Eorhiza arnoldii Robison and Person from the Middle Eocene Princeton chert locality of British Columbia. International Journal of Plant Sciences 155(5), 606-616. DOI 10.1086/297199
220. Sweet, A. 2005. Applied research report on four Tertiary samples from Appian Way plant locality, east coast of Vancouver Island near Campbell River. Geological Survey of Canada Paleontological Report 02-ARS-2005. Geological Survey of Canada, Calgary, Alberta.
221. 39Ar dating of the Eocene-Oligocene transition in North America. Science 249(4970), 760-762. DOI 10.1126/science.249.4970.760
222. Tiffney, B.H. 1999. Early Eocene vertebrates and plants from the Fisher/Sullivan Site (Nanjemoy Formation) Stafford County, Virginia. 159 pp. Virginia Division of Mineral Resources Publication 152, Commonwealth of Virginia, Department of Mines, Minerals and Energy, Charlottesville, Virginia.
223. Tiffney, B.H. & Manchester, S.R. 2001. The use of geological and paleontological evidence in evaluating plant phylogeographic hypotheses in the Northern Hemisphere Tertiary. International Journal of Plant Sciences 162(S6), S3-S17. DOI 10.1086/323880
224. Trivett, M.L., Stockey, R.A., Rothwell, G.W. & Beard, G. 2006. Paralygodium vancouverensis sp. nov. (Schizaeaceae): additional evidence for filicalean diversity in the Paleogene of North America. International Journal of Plant Sciences 167(3), 675-681. DOI 10.1086/500986
225. Tuta, J.A. 1967. Fossil palms. Principes 11, 54-71.
226. Wehr, W.C. 1995. Early Tertiary flowers, fruits and seeds of Washington Stateand adjacent areas. Washington Geology 23 (3), 3-16.
227. Wehr, W.C. & Hopkins, D.Q. 1994. The Eocene orchards and gardens of Republic, Washington. Washington Geology 22(3), 27-34.
228. Wehr, W.C. & Manchester, S.R. 1996. Paleobotanical significance of Eocene flowers, fruits, and seeds from Republic, Washington. Washington Geology 24(2), 25-27.
229. Wheeler, E.A. & Manchester, S.R. 2002. Woods of the Eocene Nut Beds Flora, Clarno Formation, Oregon, USA. IAWA Journal Supplement 3. International Association of Wood Anatomists, Nationaal Herbarium Nederland, The Netherlands.
230. Wing, S.L. 1987. Eocene and Oligocene flora and vegetation of the Rocky Mountains. Annals of the Missouri Botanical Garden 74, 748-784. DOI 10.2307/2399449
231. Wobus, R.A. & Epis, R.C. 1978. Geologic map of the Florissant 15-minute quadrangle, Park and Teller Counties, Colorado. Washington, D.C. United States Government Printing Office U.S. Geological Survey Miscellaneous Investigations Series Map I-1044, 1 sheet, scale 1: 62, 500.
232. Wolfe, J.A. 1968. Paleogene biostratigraphy of nonmarine rocks in King County, Washington. United States Geological Survey Professional Paper 571, 1-33.
233. Wolfe, J.A. 1977. Paleocene floras of the Gulf of Alaska region. United States Geological Survey Professional Paper 997, 1-108.
234. Wolfe, J.A. 1978. A paleobotanical interpretation of Tertiary climates in the Northern Hemisphere. American Scientist 66(6), 694-703.
235. Wolfe, J.A. 1987. An overview of the origins of the modern vegetation and flora of the northern Rocky Mountains. Annals of the Missouri Botanical Garden 74(4), 785-803. DOI 10.2307/2399450.
236. Wolfe, J.A. & Schorn, H.E. 1989. Paleoecologic, paleoclimatic and evolutionary significance of the Oligocene Creede flora, Colorado. Paleobiology 15(2), 180-198.
237. Wolfe, J.A. & Schorn, H.E. 1990. Taxonomic revision of the Spermatopsida of the Oligocene Creede flora, southern Colorado. United States Geological Survey Bulletin 1923, 1-40.
238. Wolfe, J.A. & Tanai, T. 1987. Systematics, phylogeny, and distribution of Acer (maples) in the Cenozoic of western North America. Journal of the Faculty of Science, Hokkaido University, Series IV 22, 1-246.
239. Wolfe, J.A. & Wehr, W. 1987. Middle Eocene dicotyledonous plants from Republic, northeastern Washington. United States Geological Survey Bulletin 1597, 1-25.
240. Yang, J., Wang, Y-F., Spicer, R.A., Mosbrugger, V., Li, C.-S. & Sun, Q.-G. 2007. Climatic reconstruction at the Miocene Shanwang basin, China, using leaf margin analysis, CLAMP, coexistence approach, and overlapping distribution analysis. American Journal of Botany 94(4), 599-608. DOI 10.3732/ajb.94.4.599
241. Zavada, M.S. & Crepet, W.L. 1981. Investigations of angiosperms from the Middle Eocene of North America: Flowers of the Celtidoideae. American Journal of Botany 68(7), 924-933. DOI 10.2307/2443223
242. Zona, S. 1990. A monograph of Sabal (Arecaceae: Coryphoideae). Aliso 12, 583-666.