Specific limits and emerging diversity patterns in East African populations of laminate-toothed rats, genus Otomys (Muridae: Murinae: Otomyini): Revision of the Otomys typus complex

Zootaxa

Volumn , Issue 3024, 2011, Pages 1-66

  Taylor, Peter J ^a,b,c   Lavrenchenko, Leonid A ^d   Carleton, Michael D ^e   Verheyen, Erik ^f   Bennett, Nigel C ^g   Oosthuizen, Carel J ^g   Maree, Sarita ^g  

^a Durban Natural Science Museum   (South Africa)

^b UNIVERSITY OF VENDA   (South Africa)

^c UNIVERSITY OF KWAZULU NATAL   (South Africa)

^d SEVERTSOV INSTITUTE OF ECOLOGY AND EVOLUTION   (Russian Federation)

^e DEPARTMENT OF PALEOBIOLOGY   (United States)

^f ROYAL BELGIAN INSTITUTE OF NATURAL SCIENCES   (Belgium)

^g UNIVERSITY OF PRETORIA   (South Africa)

Author keywords

12S rRNA; Afromontane; Cytochrome b; Geometric morphometrics; Microendemism; Otomys; Speciation

Indexed keywords

MURIDAE; MURINAE; OTOMYS; OTOMYS TROPICALIS; OTOMYS TYPUS; RATTUS;

EID: 80052739894     PISSN: 11755326     EISSN: 11755334     Source Type: Journal    
DOI: 10.11646/zootaxa.3024.1.1     Document Type: Article

References (123)

1. Abdel-Rahman, E.H., Taylor, P.J., Contrafatto, G., Lamb, J.M., Bloomer, P. & Chimimba, C.T. (2009) Geometric craniometric analysis of sexual dimorphism and ontogenetic variation: A case study based on two geographically disparate species, Aethomys ineptus from southern Africa and Arvicanthis niloticus from Sudan (Rodentia: Muridae). Mammalian Biology, 74, 361-373.
2. Addinsoft (2007) XLSTAT ver. 2007.5. [Computer software]. Addinsoft, France.
3. Allard, M.W. & Honeycutt, R.L. (1992) Nucleotide sequence variation in the mitochondrial 12S rRNA gene and the phylogeny of the African mole-rats (Rodentia: Bathyergidae). Molecular Biology & Evolution, 9, 27-40.
4. Allen, G.M. (1939) A checklist of African mammals. Bulletin of the Museum of Comparative Zoology at Harvard College, 83, 1-763.
5. Allen, G.M. & Loveridge, A. (1933) Reports on the scientific results of an expedition to the southwestern highlands of Tanganyika Territory. II. Mammals. Bulletin of the Museum of Comparative Zoology at Harvard College, 75, 47-140.
6. Aniskin, V.M., Lavrenchenko, L.A., Milishnikov, A.N. & Warshavsky, A.A. (1998) Karyotypes of small mammals (Insectivora, Rodentia) of the Bale Mountains, Ethiopia. In: Sokolov, V.E., Rozhnov, V.V., Serbenyuk, M.A. (Eds.), Behaviour, communication and ecology of mammals. Inst. Ecol. Evol. RAS, Moscow, pp. 217-236.
7. Ansell, W.F.H. (1978) The mammals of Zambia. Chilanga, Zambia, The National Parks and Wildlife Service, 126 pp.
8. Ansell, W.F.H. & Dowsett, R.J. (1988) Mammals of Malawi: An annotated checklist and atlas. Cornwall, The Trendrine Press, 170 pp.
9. Avise, J.C. (2000) Phylogeography. The history and formation of species. Harvard University Press, Cambridge, Massachusetts.
10. Bohmann, L. (1943) Zwei neue Otomys-Rassen aus Ostafrika. Zoologischer Anzeiger, 143, 153-155.
11. Bohmann, L. (1952) Die afrikanische Nagergattung Otomys F. Cuvier. Zeitschrift für Säugetierkunde, 18, 1-80.
12. Bond, Jason E. & Stockman, Amy K.(2008) An integrative method for delimiting cohesion species: finding the population-spe cies interface in a group of Californian trapdoor spiders with extreme genetic divergence and geographic structuring, Systematic Biology, 57, 628-646.
13. Bowie, C.K., Fjeldså, J, Hackett, S.J. & Crowe, T.M. (2004) Molecular evolution in space and through time: mtDNA phylogeography of the Olive Sunbird (Nectarinia olivacea/obscura) throughout continental Africa. Molecular Phylogenetics and Evolution, 33, 56-74. (Pubitemid 39138737)
14. Bowie, C.K., Fjeldså, J., Hackett, S.J., Bates, J.M. & Crowe, T.M. (2006) Coalescent models reveal the relative roles of ancestral polymorphism, vicariance, and dispersal in shaping phylogeographical structure of an African montane forest robin. Molecular Phylogenetics and Evolution, 38, 171-188. (Pubitemid 41773281)
15. Carleton, M.D. & Byrne, E.S. (2006) The status of Otomys orestes dollmani Heller, 1912 (Muridae: Otomyinae), a rodent described from the Mathews Range, central Kenya. Proceedings of the Biological Society of Washington, 119, 477-515. (Pubitemid 46062553)
16. Carleton, M.D. & Musser, G.G. (1984) Muroid Rodents. In: Anderson, S. & Jones, J.K. (Eds.), Orders and Families of Recent Mammals of the World. Wiley Press, New York, pp. 289-379.
17. Carleton, M.D. & Stanley, W.T. (2005) Review of the Hylomyscus denniae complex (Rodentia: Muridae) in Tanzania, with description of a new species. Proceedings of the Biological Society of Washington, 118, 619-646. (Pubitemid 41301294)
18. Carleton, M.D., Kerbis Peterhans, J.C. & Stanley, W.T. (2006) Review of the Hylomyscus denniae group (Rodentia: Muridae) in eastern Africa, with comments on the generic allocation of Epimys endorobae Heller. Proceedings of the Biological Society of Washington, 119, 293-325. (Pubitemid 44184194)
19. Corbet, G.B. & Hill, J.E. (1980) A world list of mammalian species. British Museum (Natural History), London. 226 pp.
20. Corbet, G.B. & Hill, J.E. (1986) A world list of mammalian species, 2nd edition. British Museum (Natural History) Publications, London.254 pp.
21. Corbet, G.B. & Hill, J.E. (1991) A world list of mammalian species, 3rd edition. British Museum (Natural History) Publications, London. 243 pp.
22. Corti. M. (1993) Geometric morphometrics: an extension of the revolution. Trends in Ecology and Evolution, 8, 302-303.
23. Delany, M.J. (1975) The rodents of Uganda. London, Trustees of the British Museum (Natural History), 165 pp.
24. de Menocal, P.B. (1995) Plio-Pleistocene African climate. Science, 270, 53-59.
25. de Menocal, P.B. (2004) African climate change and faunal evolution during the Pliocene-Pleistocene. Earth and Planetary Science Letters, 220, 3-24.
26. Denys, C. (1989) Phylogenetic affinities of the oldest East African Otomys (Rodentia, Mammalia) from Olduvai Bed I (Pleistocene, Tanzania). Neues Jahrbuch für Geologie und Paläontologie Monatshefte, 12, 705-725.
27. Denys, C. (1999) Of mice and men. Evolution in East and South Africa during Plio-Pleistocene times. In: Bromage, T.G. & Schrenk, F. (Eds.), African biogeography, climate change and human evolution. Oxford University Press, New York & Oxford, pp. 226-252.
28. Denys, C. (2003) Evolution du genre Otomys (Rodentia: Muridae) au Plio-Pléistocène d'Afrique orientale et australe. In: Petculescu, S. (Ed.), Advances in vertebrate palaeontology "Hen to Pantha", Papers in honour of C. Radulescu and P. M. Samson. Institute of Speleology "Emile Pacovitsa", Bucarest, Romania, pp. 75-84.
29. Dieterlen, F. & Van der Straeten, E. (1992) Species of the genus Otomys from Cameroon and Nigeria and their relationship to East African forms. Bonner Zoologische Beiträge, 43, 383-392.
30. Dollman, G. (1915) On the swamp-rats (Otomys) of East Africa. Annals and Magazine of Natural History, series 8 15, 149-170.
31. Drummond, A.J. & Rambaut, A. (2006a) BEAST v1.4. Bayesian evolutionary analysis sampling trees. Available from http://beast.bio.ed.ac.uk (accessed 17 May 2011).
32. Drummond, A.J. & Rambaut, A. (2006b) BEAUti v. 1.4. Bayesian evolutionary analysis utility. Available from http://beast.bio.ed.ac.uk (accessed 17 May 2011).
33. Drummond, A.J., Ho, S.Y.W., Phillips, M.J. & Rambaut, A. (2006) Relaxed phylogenetics and dating with confidence. PLoS Biology, 4(5), e88. doi:10.1371/journal.pbio.0040088.
34. Ellerman, J.R. (1941) The families and genera of living rodents. Volume II. Family Muridae. British Museum (Natural History), London. 690 pp.
35. Fahr, J., Vierhaus, H., Hutterer, R. & Kock, D. (2002) A revision of the Rhinolophus maclaudi species group with the description of a new species from West Africa (Chiroptera: Rhinolophidae). Myotis, 40, 95-126.
36. Felsenstein, J. (1981) Evolutionary trees from DNA sequences: a maximum likelihood approach. Journal of Molecular Evolution, 17, 368-376. (Pubitemid 11016207)
37. Felsenstein, J. (1985) Confidence limits on phylogenies: an approach using bootstrap. Evolution, 39, 783-791.
38. Felsenstein, J. (1988) Phylogenies from molecular sequences: inference and reliability. Annual Review of Genetics, 22, 521-565. (Pubitemid 19156673)
39. Ford, C.E. & Hamerton, J.L. (1956) A colchicine hypotonic citrate, squash sequence for mammalian chromosomes. Stain Technology, 31: 247-251.
40. Frick, C. (1914) A new genus and some new species of Abyssinian rodents. Annals of the Carnegie Museum, 9, 7-28.
41. Hatt, R.T. (1934) Fourteen hitherto unrecognized African rodents. American Museum Novitates, 708, 1-15.
42. Hijmans, R.J., Cameron, S.E, Parra, J.L., Jones, P.G. & Jarvis, A. (2005) Very high resolution interpolated climate surfaces for global land areas. International Journal of Climatology, 25, 1965-1978 . (Pubitemid 43013915)
43. Honacki, J.H., Kinman, K.E. & Koeppl, J.W. (Eds.) (1982) Mammal species of the world, a taxonomic and geographic refer ence. Allen Press, Lawrence, Kansas. Inc. and The Association of Systematics Collections, 694 pp.
44. Huelsenbeck, J.P. & Ronquist F. (2001) MrBayes: Bayesian inference of phylogenetic trees. Bioinformatics, 17(8), 754-755. (Pubitemid 32851390)
45. Huelsenbeck, J.P. & Ronquist, F. (2003) MrBayes: A program for the Bayesian inference of phylogeny, version 3.1.2. Rochester, New York.
46. Huhndorf, M.H., Kerbis Peterhans, J.C. & Loew, S.S. (2007) Comparative phylogeography of three endemic rodents from the Albertine Rift, east central Africa. Molecular Ecology, 16(3), 663-674. (Pubitemid 46161087)
47. Jacobs, L.L. & Downs, W.R. (1994) The evolution of murine rodents in Asia. In Yukimitsu Tomida, Chuankuei Li, and Takeshi Setoguchi (Eds.), Rodent and Lagomorph Families of Asian Origins and Diversification. National Science Museum, Tokyo, Monograph Series, pp. 149-156.
48. Kerbis Peterhans, J.C., Kityo, R.M., Stanley, W.T. & Austin, P.K. (1998) Small mammals along an elevational gradient in Ruwenzori Mountains National Park, Uganda. In: Osmaston, H. et al., (Eds.), The Ruwenzori Mountains National Park, Uganda. Exploration, environment & biology. Conservation, Management and Community Relations. Makerere University, Kampala, Uganda, pp.149-171.
49. Kluge, A.G. & Farris, J.S. (1969) Quantitative phyletics and the evolution of anurans. Systematic Zoology, 18, 1-32.
50. Lanave, C., Preparata, G., Saccone, C. & Serio, G. (1984) A new method for calculating evolutionary substitution rates. Journal of Molecular Evolution, 20, 86-93. (Pubitemid 14116237)
51. Lavrenchenko, L.A., Milishnikov, A.N., Aniskin, V.M., Warshavsky, A.A. & Gebrekidan W. (1997) The genetic diversity of small mammals of the Bale Mountains, Ethopia. Ethiopian Journal of Science, 20(2), 213-233.
52. Lawrence, B. & Loveridge, A. (1953) Zoological results of a fifth expedition to East Africa. I. Mammals from Nyasaland and Tete. With notes on the genus Otomys. Bulletin of the Museum of Comparative Zoology at Harvard College, 110, 1-80.
53. Lecompte, E., Aplin, K., Denys, C. Catzeflis, F., Chades, M. & Chevret, P. (2008) Phylogeny and biogeography of African Murinae based on mitochondrial and nuclear gene sequences, with a new tribal classification of the subfamily. BMC Evolutionary Biology, 8:199 doi:10.1186/1471-2148-8-199.
54. Maddison, W.P. & Maddison, D.R. (2000) McClade: analysis of phylogeny and character evolution, version 4.07. Sinauer Associates, Sunderland, MA, USA.
55. Marcus, L.F. (1990) Traditional morphometrics. In: Rohlf, F.J., Bookstein, F.L., (Eds.), Proceedings of the Michigan Morphometrics Workshop. The University of Michigan Museum of Zoology, Special Publication No. 2, Ann Arbor, 77-122.
56. Marcus, L.F. & Corti, M. (1996) Overview of the new, or geometric morphometrics. In: Marcus, L.F., Corti, M., Loy, A., Naylor, G.J.P. & Slice, D.E. (Eds.), Advances in morphometrics. Plenum Press, New York, pp. 1-13.
57. Maree, S. (2002) Phylogenetic relationships and mitochondrial DNA sequence evolution in the African rodent subfamily Otomyinae (Muridae). PHD Thesis. University of Pretoria, Pretoria.
58. Meester, J.A.J., Rautenbach, I.L., Dippenaar, N.J. & Baker, C.M. (1986) Classification of Southern African mammals. Transvaal Museum Monograph, 5, 1-359.
59. Misonne, X. (1974) Part 6, Order Rodentia. In: Meester, J. & Setzer, H.W. (Eds.), The mammals of Africa: an identification manual. Smithsonian Institution Press, Washington, D.C.
60. Moussalli, A. (2003) BIOCLIMav v1.0, user guide. Cooperative Research Centre for Tropical Rainforest Ecology and Management, Brisbane.
61. Musser, G.G. & Carleton, M.D. (1993) Family Muridae. In: Wilson, D.E. & Reeder, D.M. (Eds.), Mammal Species of the World: a taxonomic and geographic reference 2nd edition. Smithsonian Institution Press, Washington D.C., 501-755.
62. rd edition. John Hopkins University Press, Baltimore, 894-1531.
63. Nei, M. (1987) Molecular evolutionary genetics. Columbia University Press, New York, NY.
64. Osgood, W.H. (1910) Diagnoses of new East African mammals, including a new genus of Muridae. Field Museum of Natural History, Zoological Series, 10, 5-13.
65. Pääbo, S. & Wilson, A.C. (1988) Polymerase chain reaction reveales cloning artefacts. Nature (London), 334, 387-388.
66. Partridge, T.C. (1973) Geomorphological dating of cave openings at Makapansgat, Sterkfontein, Swartkrans and Taung. Nature (Lond.), 246, 75-79.
67. Partridge, T.C., Wood, B.A. & deMenocal P.B. (1995) The influence of global climate changes and regional uplift on large-mammalian evolution in East and Southern Africa. In: Vrba, E.S. (Ed.), Paleoclimate and evolution with emphasis on human evolution. Yale University Press, New Haven, 331-356.
68. Petter, F. (1982) Les parentés des Otomys du Mont Oku (Cameroun) et des autres formes rapportées á O. irroratus (Brants, 1827) (Rodentia, Muridae). Bonner Zoologische Beiträge, 33, 215-222.
69. Pickford, M. (1990) Uplift of the Roof of Africa and its bearing on the evolution of Mankind. Human Evolution, 5, 1-20. (Pubitemid 20194272)
70. Pocock, T.N. (1976) Pliocene mammalian microfauna from Langebaanweg: a new fossil genus linking the Otomyinae with the Murinae. South African Journal of Science, 72, 58-60.
71. Pocock, T.N. (1987) Plio-Pleistocene fossil mammalian microfauna of Southern Africa. A preliminary report including descriptions of two new fossil muroid genera (Mammalia, Rodentia). Palaeontologia Africana, 26, 69-91.
72. Posada, D. (2006) ModelTest Server: a web-based tool for the statistical selection of models of nucleotide substitution online. Nucleic Acids Research, 34, W700-W703. (Pubitemid 44529861)
73. Posada, D. & Crandall, K.A. (1998) MODELTEST: Testing the model of DNA substitution. Bioinformatics, 14, 817-818. (Pubitemid 28552116)
74. Posada, D. & Crandall, K.A. (2001) Selecting the best-fit model of nucleotide substitution. Systematic Biology, 50, 580-601.
75. Rambaut, A. & Drummond, A.J. (2005) TRACER v1.2. MCMC Trace Analysis Tool. Available from http://beast.bio.ed.ac.uk (accessed 17 May 2011).
76. Rodriguez, F., Oliver, J.L., Marin, A. & Medina, J.R. (1990) The general stochastic model of nucleotide substitution. Journal of Theoretical Biology, 142, 485-501. (Pubitemid 20108270)
77. Rohlf, F.J. (1997) NTSYS-pc, version 2.01h. Exeter Software, Setauket, New York.
78. Rohlf, F.J. (1998) On applications of geometric morphometrics to studies of ontogeny and phylogeny. Systematic Biology, 47, 147-158. (Pubitemid 128449792)
79. Rohlf, F.J. (2002) Geometric morphometrics in phylogeny. In: Macleod, N & Forey, P.L. (Eds.), Morphology, shape and phylogenetics. Systematic Association Special Volume Series 64. Francis & Taylor, London, pp. 175-193.
80. Rohlf, F.J. (2007) tpsRegr version 1.35. State University of New York at Stony Brook.
81. Rohlf, F.J. (2005) tpsRelw version 1.42. State University of New York at Stony Brook.
82. Rohlf, F.J. (2006) tpsDig version 2.10. State University of New York at Stony Brook.
83. Rohlf, F.J. & Corti, M. (2000) The use of two-block partial least squares to study covariation in shape. Systematic Biology, 49, 740-753. (Pubitemid 33213088)
84. Rohlf, F.J. & Marcus, L.F. (1993) A revolution in morphometrics. Trends in Ecology and Evolution, 8, 129-132.
85. Rohlf, F.J. & Slice, D. (1990) Extensions of the Procrustes method for the optimal superimposition of landmarks. Systematic Zoology, 39, 40-59.
86. Rowe, K.C., Reno, M.L., Richmond, D.M., Adkins, R.M. & Steppan, S.J. (2008) Pliocene colonization and adaptive radiations in Australia and New Guinea (Sahul): Multilocus systematics of the old endemic rodents (Muroidea: Murinae). Molecular Phylogenetics and Evolution, 47, 84-101.
87. Saiki, R.K., Gelfand, D.H., Stoffel, S., Scharf, S.J., Higuchi, R., Horn, G.T., Mullis, K.B. & Erlich, H.A. (1988) Primer-directed enzymatic amplification of DNA with a thermostable DNA polymerase. Science, 239, 487-491. (Pubitemid 18084310)
88. Saitou, N. & Nei, M. (1987) The neighbor-joining method: a new method for reconstructing phylogenetic trees. Molecular Biology and Evolution, 4, 406-425.
89. Sambrook, J. & Maniatis, T. (1989) Molecular cloning: a laboratory manual. Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.
90. Sanger, F., Nicklen, S. & Coulson, A.R. (1977) DNA sequencing with chain terminating inhibitors. Proceedings of the National Academy of Science USA, 74(12), 5463-5468.
91. Sénégas, F. (2001) Interpretation of the dental pattern of the South African fossil Euryotomys (Rodentia, Murinae) and origin of otomyine dental morphology. In: Denys, C., Granjon, L. & Poulet, A (Eds.), African small mammals Paris: IRD, pp. 151-160.
92. Sénégas, F. & Avery, M. (1998) New evidence for the murine origins of the Otomyinae (Mammalia, Rodentia) and the age of Bolt's Farm (South Africa). South African Journal of Science, 94, 503-507. (Pubitemid 29022653)
93. Setzer, H.W. (1953) Four new mammals from the Anglo-Egyptian Sudan. Journal of the Washington Academy of Sciences,43(10), 333-335.
94. Simmons, M.P. & Ochoterena, H. (2000) Gaps as characters in sequence-based phylogenetic analyses. Systematic Biology, 49, 369-381.
95. Stanger-Hall, K. & Cunningham, C.W. (1998) Support for a monophyletic Lemuriformes: overcoming incongruence between data partitions. Molecular Biology and Evolution, 15(11), 1572-1577. (Pubitemid 28511938)
96. Stanley, W.T. & Hutterer, R. (2000) A new species of Myosorex Gray, 1832 (Mammalia: Soricidae) from the Eastern Arc mountains, Tanzania. Bonner Zoologische Beiträge, 49, 19-29.
97. Stanley, W.T. & Olson, L.E. (2005) Phylogeny, phylogeography, and geographic variation of Sylvisorex howelli (Soricidae), an endemic shrew of the Eastern Arc Mountains, Tanzania. Journal of Zoology, London, 266, 341-354. (Pubitemid 41187099)
98. Stanley, W.T., Rogers, M.A. & Hutterer, R. (2005) A new species of Congosorex from the Eastern Arc Mountains, Tanzania, with significant biogeographical implications. Journal of Zoology, London, 265, 269-280. (Pubitemid 40383521)
99. Stockman, A.K. & Bond, J.E. (2007) Delimiting cohesion species: Extreme population structuring and the role of ecological interchangeability. Molecular Ecology, 16, 3374-3392. (Pubitemid 47221132)
100. Sullivan, J., Holsinger, K.E. & Simon, C. (1995) Among-site rate variation and phylogenetic analysis of the 12S rRNA in Sigmodontine rodents. Molecular Biology and Evolution, 12, 988-1001.
101. *and other methods), 4b10. Sunderland, Massachusetts: Sinauer Associates.
102. Taylor, P.J., Meester, J. & Kearney, T. (1993) The taxonomic status of Saunder's vlei rat, Otomys saundersiae Roberts (Rodentia: Muridae: Otomyinae). Journal of African Zoology, 107, 571-596.
103. Taylor, P.J. & Kumirai, A. (2001) Craniometric relationships between the southern African vlei rat, Otomys irroratus (Rodentia, Muridae, Otomyinae) and allied species from north of the Zambesi River. In: Denys, C., Granjon, L. & Poulet, A. (Eds.), African small mammals, IRD, Paris, 161-181.
104. Taylor, P.J., Kumirai, A. & Contrafatto, G. (2004a) Geometric morphometric analysis of adaptive cranial evolution in southern African laminate-toothed rats (Family: Muridae; Tribe: Otomyini). Durban Museum Novitates, 29, 110-122.
105. Taylor, P.J., Denys, C. & Mukerjee, M. (2004b) Phylogeny of the African murid tribe Otomyini (Rodentia), based on morphological and allozyme evidence. Zoologica Scripta, 33, 389-402. (Pubitemid 39219109)
106. Taylor, P.J., Kumirai, A. & Contrafatto, G. (2005) Species with fuzzy borders: the taxonomic status and species limits of Saun ders' vlei rat, Otomys saundersiae Roberts (Rodentia: Muridae: Otomyini). Mammalia, 69, 297-322. (Pubitemid 43093617)
107. Taylor, P. J., Maree, S., van Sandwyk, J., Kerbis Peterhans, J.C., Stanley, W.T., Verheyen, E., Kaliba, P., Verheyen, W., Kaleme, P. & Bennett, N.C. (2009a) Speciation mirrors geomorphology and palaeoclimatic history in African laminate-toothed rats (Muridae: Otomyini) of the Otomys denti and O. lacustris species-complexes in the "Montane Circle" of East Africa. Biological Journal of the Linnean Society, 96, 913-941.
108. Taylor, P. J., Maree, S., van Sandwyk, J., Baxter, R. & Rambau, R.V. (2009b) When is a species not a species? Uncoupled phenotypic, karyotypic and genotypic divergence in two species of South African laminate-toothed rats (Murinae: Otomyini). Journal of Zoology (London), 277(4), 317-332.
109. Templeton, A.R. (1998) Species and speciation: Geography, population structure, ecology and gene trees. Pages 32-41 in Endless forms: Species and speciation (D. J. Howard and S. H. Berlocher, eds.). Oxford University Press, New York, New York.
110. Thomas, O. (1891) On a collection of small mammals made by Mr. F.J. Jackson in eastern Africa. Proceedings of the Zoological Society of London, 1891, 181-187.
111. Thomas, O. (1900) List of mammals obtained by Mr. H. J. Mackinder during his recent expedition to Mount Kenya, British East Africa. Proceedings of the Zoological Society of London, 1900, 173-180.
112. Thomas, O. (1902a) On a collection of mammals from Abyssinia, including some from Lake Tsana, collected by Mr. Edward Degen. Proceedings of the Zoological Society of London 1902, 308-316.
113. Thomas, O. (1902b) On some new forms of Otomys. Annals and Magazine of Natural History, series 7, 10, 311-314.
114. Thomas, O. (1906a) New mammals collected in north-east Africa by Mr. Zaphiro, and presented to the British Museum by W.N. McMillan. Annals and Magazine of Natural History, series 7, 18, 300-306.
115. Thomas, O. (1906b) Descriptions of new mammals from Mount Ruwenzori. Proceedings of the Zoological Society, London, 1906, 136-147.
116. Thomas, O. (1918) A revised classification of the Otomyinae, with descriptions of new genera and species. Annals and Magazine of Natural History, series, 9(2), 203-211.
117. Thompson, J.D., Gibson, T.J., Plewniak F., Jeanmougin, F. & Higgins, D.G. (1997) The CLUSTAL X windows interface: flexible strategies for multiple sequence alignment aided by quality analysis tools. Nucleic Acids Research, 25, 4876-4882. (Pubitemid 28022245)
118. Van der Straeten, E. & Kerbis Peterhans, J.C. (1999) Praomys degraaffi, a new species of Muridae from eastern Africa. South African Journal of Science, 34(2), 80-90. (Pubitemid 129491737)
119. Williams, P.L. & Fitch, W.M. (1990) Phylogeny determination using the dynamically weighted parsimony method. Methods Enzymology, 183, 615-626. (Pubitemid 20148845)
120. Winkler, A.J. (2002) Neogene paleobiogeography and East African paleoenvironments: contributions from the Tugen Hills rodents and lagomorphs. Human Evolution, 42(1-2), 237-256. (Pubitemid 34134896)
121. Wroughton, R.C. (1906) Notes on the genus Otomys. Annals and Magazine of Natural History, series 7(18), 264-278.
122. Yalden, D.W., Largen, M.J. & Kock, D. (1976) Catalogue of the mammals of Ethiopia. 2. Insectivora and Rodentia. Monitore Zoologico Italiano, Supplemento 8(1), 1-118.
123. Yalden, D.W., Largen, M.J., Kock, D. & Hillman, J.C. (1996) Catalogue of the mammals of Ethiopia and Eritrea. 7. Revised checklist, zoogeography, and conservation. Tropical Zoology, 9, 73-164.