Tournaisian forested wetlands in the Horton Group of Atlantic Canada

Special Paper of the Geological Society of America

Volumn 399, Issue , 2006, Pages 103-126

  Rygel, Michael C ^a,d   Calder, John H ^b   Gibling, Martin R ^a   Gingras, Murray K ^c   Melrose, Camilla S A ^a  

^a DALHOUSIE UNIVERSITY   (Canada)

^b NOVA SCOTIA DEPARTMENT OF NATURAL RESOURCES   (Canada)

^c UNIVERSITY OF ALBERTA   (Canada)

^d UNIVERSITY OF NEBRASKA LINCOLN   (United States)

Author keywords

Horton bluff formation; Lepidodendropsis; Mississippian; Protostigmaria; Scratch circle; Vegetationinduced sedimentary structures

Indexed keywords

BIOLOGICAL MATERIALS PRESERVATION; FORESTRY; MORPHOLOGY; SEDIMENTOLOGY; SEDIMENTS; WETLANDS;

HORTON BLUFF FORMATION; LEPIDODENDROPSIS; MISSISSIPPIANS; PROTOSTIGMARIA; SCRATCH CIRCLE; SEDIMENTARY STRUCTURE;

VEGETATION;

FAMENNIAN; FOSSIL ASSEMBLAGE; JUVENILE; MISSISSIPPIAN; MORPHOLOGY; PALEOZOIC; PENNSYLVANIAN; SEDIMENT; SUBSTRATE; TAPHONOMY; TETRAPOD; TOURNAISIAN; WETLAND;

ATLANTIC OCEAN; CANADA;

EMBRYOPHYTA; LEPIDODENDROPSIS; LYCOPODIOPSIDA; TETRAPODA;

EID: 73949100345     PISSN: 00721077     EISSN: None     Source Type: Book Series    
DOI: 10.1130/2006.2399(05)     Document Type: Article

References (114)

1. Ahlberg, P.E., and Milner, A.R., 1994, The origin and diversification of early tetrapods: Nature, v. 368, p. 507-514, doi: 10.1038/368507a0.
2. Algeo, T.J., and Scheckler, S.E., 1998, Terrestrial-marine teleconnections in the Devonian: Links between the evolution of land plants, weathering processes, and marine anoxic events: Royal Society of London Philosophical Transactions, ser. B, v. 353, p. 113-130.
3. Allen, J.R.L., 1982, Sedimentary structures: Their character and physical basis, Volume 2: Amsterdam, Elsevier, 663 p.
4. Anderson, J.S., Mansky, C., Wood, S., Godfrey, R., and Carroll, R.L., 2005, New tetrapod fossils from the Lower Carboniferous of Blue Beach (Horton Bluff Formation), Nova Scotia, in North American Paleontology Convention, Halifax, Nova Scotia, June 19-25: Paleobios, v. 25, supplement to no. 2, p. 13-14.
5. Avery, T.E., and Burkhart, H.E., 1983, Forest measurements: New York, McGraw-Hill, 331 p.
6. Bateman, R.M., 1991, Palaeobiological and phylogenetic implications of anatomically- preserved archaeocalamites from the Dinantian of Oxroad Bay and Loch Humphrey Burn, southern Scotland: Palaeontographica Abteilung B, v. 223, p. 1-59.
7. Beckett, H., 1845, On a fossil forest in the Parkfield Colliery near Wolverhampton: Quarterly Journal of the Geological Society [London], v. 1, p. 41-43.
8. Bell, W.A., 1929, Horton-Windsor District, Nova Scotia: Geological Survey of Canada Memoir 155, 268 p.
9. Bell, W.A., 1960, Mississippian Horton Group of Type Windsor-Horton District, Nova Scotia: Geological Survey of Canada Memoir 314, 112 p.
10. Buatois, L.A., Mangano, M.G., Alissa-Abdulrahman, A., and Carr, T.R., 2002, Sequence stratigraphic and sedimentologic significance of biogenic structures from a late Paleozoic marginal-to open-marine reservoir, Morrow Sandstone, subsurface of Southwest Kansas, USA: Sedimentary Geology, v. 152, p. 99-132, doi: 10.1016/S0037-0738(01)00287-1. (Pubitemid 35036769)
11. Calder, J.H., 1998, The Carboniferous evolution of Nova Scotia, in Blundell, D. J., and Scott, A. C., eds., Lyell, the past is the key to the present: Geological Society [London] Special Publication 143, p. 261-302.
12. Calder, J.H., Gibling, M.R., Eble, C.F., Scott, A.C., and MacNeil, D.J., 1996, The Westphalian D fossil lepidodendrid forest at Table Head, Sydney Basin, Nova Scotia: Sedimentary, paleoecology and floral response to changing edaphic conditions: International Journal of Coal Geology, v. 31, p. 277-313, doi: 10.1016/S0166-5162(96)00020-1. (Pubitemid 27205239)
13. Calder, J.H., Boehner, R.C., Brown, D.E., Gibling, M.R., Mukhopadhyay, P.K., Ryan, R.J., and Skilliter, D.M., 1998, Horton Bluffs coastal section (Stop 2), in Classic Carboniferous sections of the Minas and Cumberland Basins in Nova Scotia: Nova Scotia Department of Natural Resources Open File Report ME 1998-5, p. 25-35.
14. Cameron, B., Van Dommelen, R., White, P.D., Domanski, D., Rogers, D., and Jones, J.R., 1992, Vertebrate fossils from the middle member of the Early Carboniferous Horton Bluff Formation, in MacDonald, D.R., and Mills, K.A., eds., Sixteenth annual open house and review of activities-program and summaries: Nova Scotia Department of Mines and Energy Report 92-4, p. 48.
15. Carr, P.A., 1968, Stratigraphy and spore assemblages, Moncton map-area, New Brunswick: Geologic Survey of Canada Paper 67-29, 47 p.
16. Carroll, R.L., 1988, Vertebrate paleontology and evolution: New York, W.H. Freeman, 689 p.
17. Carroll, R.L., 2002, Early land vertebrates: Nature, v. 418, p. 35-36, doi: 10.1038/418035a. (Pubitemid 34742561)
18. Carroll, R.L., Belt, E.S., Dineley, D.L., Baird, D., and McGregor, D.C., 1972, Horton Bluff, Lower Mississippian, in Glass, D.J., ed. Vertebrate palaeontology of eastern Canada: Montreal, International Geological Congress, 24th, Excursion A59, Guidebook, p. 17-21.
19. Carter, D.C., and Pickerill, R.K., 1985a, Algal swamp, marginal and shallow evaporitic lacustrine lithofacies from the late Devonian-early Carboniferous Albert Formation, southeastern New Brunswick, Canada: Maritime Sediments and Atlantic Geology, v. 21, p. 69-86.
20. Carter, D.C., and Pickerill, R.K., 1985b, Lithostratigraphy of the Late Devonian- Early Carboniferous Horton Group of the Moncton Subbasin, southern New Brunswick: Maritime Sediments and Atlantic Geology, v. 21, p. 11-24.
21. Chaloner, W.G., and Lacey, W.S., 1973, The distribution of Late Paleozoic floras, in Hughes, N. F., ed., Organisms and continents through time: London, Palaeontological Association Special Papers in Palaeontology 12, p. 271-289.
22. Chapman, H.H., and Meyer, W.H., 1949, Forest mensuration: New York, McGraw-Hill, 522 p.
23. Clack, J.A., 2002, An early tetrapod from Romer's Gap: Nature, v. 418, p. 72-76, doi: 10.1038/nature00824. (Pubitemid 34742572)
24. Clack, J.A., and Carroll, R.L., 2000, Early Carboniferous tetrapods, in Heatwole, H., and Carroll, R.L., eds., Amphibian Biology: Chipping Norton, Surrey Beatty and Sons, v. 4, p. 1030-1043.
25. Coates, M.I., and Clack, J.A., 1995, Romer's gap: Tetrapod original and terrestriality: Bulletin du Muséum National d'Histoire Naturelle, v. 17, p. 373-388.
26. Coates, M.I., Ruta, M., and Milner, A.R., 2000, Early tetrapod evolution: Trends in Ecology and Evolution, v. 15, p. 327-328, doi: 10.1016/S0169- 5347(00)01927-3. (Pubitemid 30484257)
27. Daeschler, E.B., Shubin, N.H., Thomson, K.S., and Amaral, W.H., 1994, A Devonian tetrapod from North America: Science, v. 265, p. 639-642.
28. DiMichele, W.A., and DeMaris, P.J., 1987, Structure and dynamics of a Pennsylvanian-age Lepidodendron forest: Colonizers of a disturbed swamp habitat in the Herrin (No.6) coal of Illinois: Palaios, v. 2, p. 146-157.
29. DiMichele, W.A., and Hook, R.H., 1992, Paleozoic terrestrial ecosystems, in Behrensmeyer, A.K., Damuth, W.A., DiMichele, W.A., Potts, R., Sues, H.-D., and Wing, S.L., eds., Terrestrial ecosystems through time: Chicago, University of Chicago Press, p. 205-325.
30. DiMichele, W.A., Eble, C.F., and Chaney, D.S., 1996, A drowned lycopsid forest above the Mahoning coal (Conemaugh Group, Upper Pennsylvanian) in eastern Ohio, U.S.A: International Journal of Coal Geology, v. 31, p. 249-276, doi: 10.1016/S0166-5162(96)00019-5. (Pubitemid 27205240)
31. Dolby, G., 2003, Palynological analysis of ten outcrop and core hole samples from Nova Scotia: Nova Scotia Department of Natural Resources Open-File Report ME 2003-5, 8 p.
32. Driese, S.G., Mora, C.I., and Elick, J.M., 1997, Morphology and taphonomy of root and stump casts of the earliest trees (Middle to Late Devonian), Pennsylvania and New York, U.S.A.: Palaios, v. 12, p. 534-537.
33. Elick, J.M., Driese, S.G., and Mora, C.I., 1998, Very large plant and root traces from the Early to Middle Devonian: Implications for early terrestrial ecosystems and atmospheric p(CO2): Geology, v. 26, p. 143-146, doi: 10.1130/0091-7613(1998)026<0143:VLPART>2.3.CO;2.
34. Falcon-Lang, H., 1999, The Early Carboniferous (Asbian-Brigantian) seasonal tropical climate of northern Britain: Palaios, v. 14, p. 116-126.
35. Falcon-Lang, H., 2000, Fire ecology of the Carboniferous tropical zone: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 164, p. 339-355, doi: 10.1016/S0031-0182(00)00193-0.
36. Falcon-Lang, H.J., 2004, Early Mississippian lycopsid forests in a delta-plain setting at Norton, near Sussex, New Brunswick, Canada: Journal of the Geological Society [London], v. 161, p. 969-981.
37. Gastaldo, R.A., 1986, Implications on the paleoecology of autochthonous lycopsids in clastic sedimentary environments of the Early Pennsylvanian of Alabama: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 53, p. 191-212, doi: 10.1016/0031-0182(86)90044-1.
38. Gastaldo, R.A., 1987, Confirmation of Carboniferous clastic swamp communities: Nature, v. 326, p. 869-871, doi: 10.1038/326869a0. (Pubitemid 17263911)
39. Gastaldo, R.A., Douglass, D.P., and McCarroll, S.M., 1987, Origin, characteristics, and provenance of plant macrodetritus in a Holocene crevasse splay, Mobile Delta, Alabama: Palaios, v. 2, p. 229-240.
40. Gastaldo, R.A., Demko, T.M., Liu, Y., Keefer, W.D., and Abston, S.L., 1989, Biostratinomic processes for the development of mud-cast logs in Carboniferous and Holocene swamps: Palaios, v. 4, p. 356-365.
41. Gensel, P.G., and Pigg, K.B., 2002, Reconstruction of the Lepidodendropsis/Protostigmaria plant from the Mississippian Price Formation of Virginia, USA: Botany 2002, Madison, Wisconsin, Abstracts, p. 27.
42. Gingras, M.K., 2002, Stop 1 (km 168), in Armitage, I., Gingras, M.K., and Keighley, D.G., eds., Field trip number four: Lacustrine sedimentology, ichnology, and sequence stratigraphy of Early Carboniferous rift basins (Albert Fm.), Sussex, New Brunswick: Frederick, New Brunswick, Atlantic Universities Geologic Conference, Guidebook, p. 4-6.
43. Gore, A.J.P., ed., 1983, Mires: Swamp, bog, fen and moor: Amsterdam, Elsevier, 440 p.
44. Greiner, H.R., 1962, Facies and sedimentary environments of the Albert shale, New Brunswick: American Association of Petroleum Geologists Bulletin, v. 46, p. 219-234.
45. Hamblin, A.P., and Rust, B.R., 1989, Tectono-sedimentary analysis of alternatepolarity half-graben basin-fill succession: Late Devonian-Early Carboniferous Horton Group, Cape Breton Island, Nova Scotia: Basin research, v. 2, p. 239-255.
46. Hayek, L.C., and Buzas, M., 1997, Surveying natural populations: New York, Columbia University Press, 563 p.
47. Hunt, A.P., Lucas, S.G., Calder, J.H., Van Allen, H.E.K., George, E., Gibling, M.R., Hebert, B.L., Mansky, C., and Reid, D.R., 2004, Tetrapod footprints from Nova Scotia: The Rosetta Stone for Carboniferous tetrapod ichnology: Geological Society of America Abstracts with Programs, v. 36, no.6, p. 66.
48. Jain, S.C., 1981, Maximum clear-water scour around cylindrical piers: Journal of Hydraulic Engineering, v. 107, p. 611-625.
49. Jennings, J.R., 1975, Protostigmaria, a new plant organ from the Lower Mississippian of Virginia: Palaeontology, v. 18, p. 19-24.
50. Jennings, J.R., Karrfalt, E.C., and Rothwell, G.W., 1983, Structure and affinities of Protostigmaria eggertiana: American Journal of Botany, v. 70, p. 963-974.
51. Karcz, I., 1968, Fluviatile obstacle marks from the wadis of the Negev (southern Israel): Journal of Sedimentary Petrology, v. 38, p. 1000-1012.
52. Karrfalt, E.E., 1977, Substrate penetration by the corm of Isoëtes: American Fern Journal, v. 67, p. 1-4.
53. Keighley, D., 2000, A preliminary sequence stratigraphy of the Horton Group, southeast Moncton Basin, southeast New Brunswick: Interpretation of the Dawson Settlement Member of the Carboniferous Albert Formation, Shell Albert Mines #4 well: New Brunswick Department of Natural Resources and Energy, Minerals and Energy Division Mineral Resource Report, p. 17-29.
54. Keppie, J.D., 2000, Geological map of the province of Nova Scotia: Nova Scotia Department of Natural Resources, Minerals and Energy Branch, scale 1:500 000.
55. Kukal, Z., and Al Naqash, A.B., 1970, Scratch circles on the Pliocene sandstones in central Iraq: Zeitschrift für Geomorphologie, v. 14, p. 329-334.
56. Lambe, L.M., 1910, Palaeoniscid fishes from the Albert Shales of New Brunswick: Contributions to Canadian Paleontology, Geological Survey of Canada Memoir 3, p. 1-69.
57. Laurin, M., Girondot, M., and Ricqlès, A. de, 2000, Early tetrapod evolution: Trends in Ecology and Evolution, v. 15, p. 118-123, doi: 10.1016/S0169- 5347(99)01780-2. (Pubitemid 30099995)
58. Leonardi, G., 1983, Notopus petri, n. gen., sp.; an amphibian imprint in the Devonian of Paraná, Brazil: Geobios, v. 16, p. 233-239.
59. Lucas, S.G., Hunt, A.P., Mansky, C., and Calder, J.H., 2004, The oldest tetrapod footprint ichnofauna, from the lower Mississippian Horton Bluff Formation, Nova Scotia, Canada: Geological Society of America Abstracts with Programs, v. 36, no.5, p. 66.
60. Macauley, G., and Ball, F.D., 1982, Oil Shales of the Albert Formation, New Brunswick: New Brunswick Department of Natural Resources and the Geologic Survey of Canada, Institute of Sedimentary and Petroleum Geology Open-File Report 82-12, 173 p.
61. Marillier, F., Keen, C.E., Stockmal, G.S., Quinlan, G., Williams, H., Colman- Sadd, S.P., and O'Brien, S.J., 1989, Crustal structure and surface zonation of the Canadian Appalachians: Implications of deep seismic reflection data: Canadian Journal of Earth Sciences, v. 26, p. 305-321.
62. Martel, A.T., and Gibling, M.R., 1991, Wave-dominated lacustrine facies and tectonically controlled cyclicity in the Lower Carboniferous Horton Bluff Formation, Nova Scotia: Canada International Association of Sedimentologists Special Publication 13, p. 223-243.
63. Martel, A.T., and Gibling, M.R., 1993, Clastic dykes of the Devono-Carboniferous Horton Bluff Formation, Nova Scotia: Storm related structures in shallow lakes: Sedimentary Geology, v. 87, p. 103-119, doi: 10.1016/0037-0738(93)90038-7.
64. Martel, A.T., and Gibling, M.R., 1994, Combined-flow generation of sole structures, including recurved groove casts, associated with Lower Carboniferous lacustrine storm deposits in Nova Scotia, Canada: Journal of Sedimentary Research, v. A64, p. 508-517.
65. Martel, A.T., and Gibling, M.R., 1996, Stratigraphy and tectonic history of the Upper Devonian to Lower Carboniferous Horton Bluff Formation, Nova Scotia: Atlantic Geology, v. 32, p. 13-38.
66. Martel, A.T., McGregor, D.C., and Utting, J., 1993, Stratigraphic significance of Upper Devonian and Lower Carboniferous miospores from the type area of the Horton Group, Nova Scotia: Canadian Journal of Earth Sciences, v. 30, p. 1091-1098.
67. Melrose, C.S.A., and Gibling, M.R., 2003, Fossilized forests of the Lower Carboniferous Horton Bluff Formation, Nova Scotia: Geological Society of America Abstracts with Programs, v. 35, p. 92.
68. Melville, B.W., and Coleman, S.E., 2000, Bridge scour: Highlands Ranch, Colorado, Water Resources Publications, 550 p.
69. Metz, R., 1991, Scratch circles from the Towaco Formation (Lower Jurassic), Riker Hill, Roseland, New Jersey: Ichnos, v. 1, p. 233-235.
70. Metz, R., 1999, Scratch circles; a new specimen from a lake-margin deposit of the Passaic Formation (Upper Triassic), Douglassville, Pennsylvania: Northeastern Geology and Environmental Sciences, v. 21, p. 179-180.
71. Miller, R.F., and McGovern, J.H., 1996, Preliminary report of fossil fish (Actinopterygii; Palaeonisciformes) from the Lower Carboniferous Albert Formation at Norton, New Brunswick (NTS 21 H/12), in Carroll, B.M.W., ed. Current research 1996: New Brunswick Department of Natural Resources and Energy; Minerals, Policy and Planning Division, Mineral Resource Report MRR 97-4, p. 191-200.
72. Milner, A.R., Smithson, T.R., Milner, A.C., Coates, M.I., and Rolfe, W.D.I., 1986, The search for early tetrapods: Modern Geology, v. 10, p. 1-28.
73. Moore, P.D., 1987, Ecological and hydrological aspects of peat formation, in Scott, A.C., ed., Coal and coal-bearing strata: Recent advances: Geological Society [London] Special Publication 32, p. 7-15.
74. Mosbrugger, V., 1990, The tree habit in land plants: Berlin, Springer, Lecture Notes in Earth Sciences 28, 161 p.
75. Nakayama, K., Fielding, C.R., and Alexander, J., 2002, Variations in character and preservation potential of obstacle marks in the variable discharge Burdekin River north of Queensland, Australia: Sedimentary Geology, v. 149, p. 199-218, doi: 10.1016/S0037-0738(01)00173-7. (Pubitemid 34657722)
76. Pemberton, S.G., Flach, P.D., and Mossop, G.D., 1982, Trace fossils from the Athabasca Oil Sands, Alberta, Canada: Science, v. 217, p. 825-827.
77. Pfefferkorn, H.W., and Fuchs, K., 1991, A field classification of fossil plant substrate interactions: Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, v. 183, p. 17-36.
78. Pickerill, R.K., 1992, Carboniferous nonmarine invertebrate ichnocoenoses from southern New Brunswick, Eastern Canada: Ichnos, v. 2, p. 21-35.
79. Pigg, K.B., 2001, Isoetalean lycopsid evolution: From the Devonian to the present: American Fern Journal, v. 91, p. 99-114.
80. Piper, D.J., 1994, Late Devonian-earliest Carboniferous basin formation and relationship to plutonism, Cobequid Highlands, Nova Scotia: Ottawa, Geological Survey of Canada, Current Research 1994-D, p. 109-112.
81. Prentice, J.E., 1962, Some sedimentary structures from a Weald Clay sandstone at Warnham brickworks, Horsham, Sussex: Proceedings of the Geologists' Association, v. 73, part 2, p. 171-185.
82. Raymond, A., Parker, W.C., and Parrish, J.T., 1985, Phytogeography and paleoclimate of the Early Carboniferous, in Tiffney, B. H., ed., Geological factors and the evolution of plants: New Haven, Connecticut, Yale University Press, p. 169-222.
83. Read, C.B., and Mamay, S.H., 1964, Upper Paleozoic floral zones and floral provinces of the United States: U.S. Geological Survey Professional Paper 454-K, p. K1-K35.
84. Richter, R., 1926, Eine geologische Exkursion in das Wattenmeer: Natur und Museum, v. 56, p. 389-407.
85. Rigby, J.K., 1959, Possible eddy markings in the Shinarump Conglomerate of north-eastern Utah: Journal of Sedimentary Petrology, v. 29, p. 283-284.
86. Rygel, M.C., Gibling, M.R., and Calder, J.H., 2004, Vegetation-induced sedimentary structures from fossil forests in the Pennsylvanian Joggins Formation, Nova Scotia: Sedimentology, v. 51, p. 531-552, doi: 10.1111/j.1365-3091.2004.00635.x.
87. Sarjeant, W.A.S., and Mossman, D.J., 1978a, Vertebrate footprints from the Carboniferous sediments of Nova Scotia: A historical review and description of newly discovered forms: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 23, p. 279-306, doi: 10.1016/0031-0182(78)90097-4.
88. Sarjeant, W.A.S., and Mossman, D.J., 1978b, Peratodactylopus, new name for the vertebrate footprint ichnogenus Anticheiropus Sarjeant and Mossman, 1978, non Hitchcock, 1865: Journal of Paleontology, v. 52, p. 1102.
89. Scheckler, S.E., 1985, Origins of the coal swamp biome: Evidence from the southern Appalachians: Geological Society of America Abstracts with Programs, v. 17, p. 134.
90. Scheckler, S.E., 1986a, Floras of the Devonian-Mississippian transition, in Broadhead, T. W., ed., Land plants: Notes for a short course: University of Tennessee Department of Geological Sciences Studies in Geology, v. 15, p. 81-96.
91. Scheckler, S.E., 1986b, Old Red Continent facies in the Late Devonian and Early Carboniferous of Appalachian North America: Annales de la Société Géologique de Belgique, v. 109, p. 223-236.
92. Scheckler, S.E., and Beeler, H.E., 1984, Early Carboniferous coal swamp floras from eastern USA (Virginia): International Organization of Palaeobotany Conference, 2nd, Edmonton, Alberta, Abstracts, p. 36.
93. Scotese, C.R., 2001, Atlas of earth history, Volume 1, Paleogeography: Arlington, Texas, Paleomap Project, 52 p.
94. Scott, A.C., and Calder, J.H., 1994, Carboniferous fossil forests: Geology Today, v. 10, p. 213-217.
95. Scott, A.C., and Rex, G.M., 1987, The accumulation and preservation of Dinantian plants from Scotland and its borders, in Miller, J., Adams, A.E., and Wright, V.P., eds., European Dinantian environments: Chichester, UK, John Wiley and Sons, p. 181-200.
96. Scott, A.C., Galtier, J., and Clayton, G., 1984, Distribution of anatomically preserved floras in the Lower Carboniferous of Western Europe: Transactions of the Royal Society of Edinburgh, Earth Sciences, v. 75, p. 311-340.
97. St. Peter, C., 1993, Maritimes Basin evolution; key geologic and seismic evidence from the Moncton Subbasin of New Brunswick: Atlantic Geology, v. 29, p. 233-270.
98. St. Peter, C., Johnson, S.C., Deblonde, C., and Lynch, G., 1997, Compilation map, geology, west central Nova Scotia, southeastern New Brunswick and western Prince Edward Island: Geological Survey of Canada Open-File Report 3521, scale 1:250 000, 1 sheet.
99. Stewart, W.N., 1947, A comparative study of stigmarian appendages and Isoëtes roots: American Journal of Botany, v. 34, p. 315-324.
100. Stewart, W.N., and Rothwell, G.W., 1993, Paleobotany and the evolution of plants: Cambridge, UK, Cambridge University Press, 521 p.
101. Tibert, N.E., and Scott, D.B., 1999, Ostracodes and agglutinated foraminifera as indicators of paleoenvironmental change in an Early Carboniferous brackish bay, Atlantic Canada: Palaios, v. 14, p. 246-260.
102. Underwood, J.R., and Lambert, W., 1974, Centroclinal cross strata, a distinctive sedimentary structure: Journal of Sedimentary Petrology, v. 44, p. 1111-1113.
103. Utting, J., 1987, Palynostratigraphic investigation of the Albert Formation (Lower Carboniferous) of New Brunswick, Canada: Palynology, v. 11, p. 73-96.
104. Utting, J., Keppie, J.D., and Giles, P.S., 1989, Palynology and age of the Lower Carboniferous Horton Group, Nova Scotia: Contributions to Canadian Palaeontology, Geological Survey of Canada Bulletin, v. 396, p. 117-143.
105. van de Poll, H.W., 1978, Paleoclimatic control and stratigraphic limits of synsedimentary mineral occurrences in Mississippian-Early Pennsylvanian strata of eastern Canada: Economic Geology and the Bulletin of the Society of Economic Geologists, v. 73, p. 1069-1081.
106. van de Poll, H.W., Gibling, M.R., and Hyde, R.S., 1995, Upper Paleozoic rocks, in Williams, H., ed., Geology of the Appalachian-Caledonian orogen in Canada and Greenland: Geological Society of America, Geology of North America, v. F-1, p. 449-566.
107. Van der Zwan, C.J., 1981, Palynology, phytogeography and climate of the Lower Carboniferous: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 33, p. 279-310, doi: 10.1016/0031-0182(81)90023-7. (Pubitemid 11274061)
108. Wagner, R.H., 1979, Megafloral zones of the Carboniferous, in Sutherland, P. K., and Manger, W. L., eds., Compte Rendu, International Congress on Carboniferous Stratigraphy and Geology, 9th, Washington, D.C., and University of Illinois at Urbana-Champaign: Carbondale and Edwardsville, Southern Illinois University Press, p. 109-134.
109. Warren, A., and Turner, S., 2004, The first stem tetrapod from the Lower Carboniferous of Gondwana: Palaeontology, v. 47, p. 151-184.
110. Warren, J.W., and Wakefield, N.A., 1972, Trackways of tetrapod vertebrates from the Upper Devonian of Victoria, Australia: Nature, v. 238, p. 469-470, doi: 10.1038/238469a0.
111. Weir, S.L., 2002, Invertebrate ichnofossils of the Horton Bluff Formation in the collections of the Nova Scotia Museum of Natural History [bachelor's thesis]: Halifax, Nova Scotia, St. Mary's University, 89 p.
112. Wellman, C.H., Osterloff, P.L., and Mohiuddin, U., 2003, Fragments of the earliest land plants: Nature, v. 425, p. 282-285, doi: 10.1038/nature01884. (Pubitemid 37158401)
113. Wood, D., and Cameron, B., 1998, Fish trace fossils from the Horton Bluff Formation (Lower Carboniferous) of Nova Scotia: Atlantic Geology, v. 34, p. 81.
114. Wood, D.A., 1999, Vertebrate and invertebrate surficial trace fossils from the Horton Bluff Formation (Lower Carboniferous) near Avonport, Nova Scotia [bachelor's thesis]: Wolfville, Nova Scotia, Acadia University, 114 p.