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Megacerops kuwagatarhinus n. sp., an unusual brontothere (Mammalia, Perissodactyla) with distally forked horns

Published online by Cambridge University Press:  20 May 2016

Bryn J. Mader  and
John P. Alexander
Bryn J. Mader
Affiliation:
1Department of Mammalogy, American Museum of Natural History, New York, New York 10024
John P. Alexander
Affiliation:
2Department of Vertebrate Paleontology, American Museum of Natural History, New York, New York 10024
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Abstract

A new species of Megacerops, M. kuwagatarhinus, is described from deposits belonging to the White River Group in southeastern Montana. Megacerops kuwagatarhinus is distinguished from all other species of Megacerops by the peculiar morphology of the horns, which are bifurcated distally into two well-developed branches. Two specimens from the Hunter Quarry of Saskatchewan, Canada, also share this horn morphology and are referred to the species.

Type
Research Article
Information
Journal of Paleontology , Volume 69 , Issue 3 , May 1995 , pp. 581 - 587
Copyright
Copyright © The Paleontological Society 

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References

Brandt, J. F. 1878. Tentamen synopseos Rhinocerotidum viventium et fossilium. Mémoires de L'Académie Impériale des Sciences de St. Pétersbourg, VII série, 26(5):1–66.Google Scholar
Cope, E. D. 1873. Second notice of some extinct Vertebrata from the Tertiary of the plains. Paleontological Bulletin, 15:1–6.Google Scholar
Emry, R. J., Russell, L. S., and Bjork, P. R. 1987. The Chadronian, Orellan, and Whitneyan North American Land Mammal Ages, p. 118–152. In Woodburne, M. O. (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy. University of California Press, Berkeley.Google Scholar
Leidy, J. 1870. Remarks on Megacerops coloradensis . Proceedings of the Academy of Natural Sciences of Philadelphia, 22:1–2.Google Scholar
Mader, B. J. 1989. The Brontotheriidae: a systematic revision and preliminary phylogeny of North American genera, p. 458–484. In Prothero, D. R. and Schoch, R. M. (eds.), The Evolution of Perissodactyls. Oxford University Press, Oxford Monographs on Geology and Geophysics (15), New York.Google Scholar
Mader, B. J. 1990. A cladistic analysis of North American brontotheres. Abstracts of Papers, Fiftieth Annual Meeting, Society of Vertebrate Paleontology, Journal of Vertebrate Paleontology, 10(Supplement to 3):33A.Google Scholar
Marsh, O. C. 1873. Notice of new Tertiary mammals. American Journal of Science, 3d. series, 5:407–411, 485–488.Google Scholar
Marsh, O. C. 1887. Notice of new fossil mammals. American Journal of Science, 3d. series, 34(35):323–331.CrossRefGoogle Scholar
Osborn, H. F. 1896. The cranial evolution of Titanotherium . Bulletin of the American Museum of Natural History, 8(9):157–197.Google Scholar
Osborn, H. F. 1902. The four phyla of Oligocene titanotheres. Bulletin of the American Museum of Natural History, 16(8):91–109.Google Scholar
Osborn, H. F. 1914. Recent results in the phylogeny of the titanotheres. Bulletin of the Geological Society of America, 25:403–405.Google Scholar
Osborn, H. F. 1929. The titanotheres of ancient Wyoming, Dakota, and Nebraska. U.S. Geological Survey, Monograph 55, 953 p. (2 volumes).Google Scholar
Owen, R. 1848. Description of teeth and portions of jaws of two extinct anthracotherioid quadrupeds (Hyopotamus vectianus and Hyop. bovinus) discovered by the Marchioness of Hastings in the Eocene deposits on the N.W. coast of the Isle of Wight: with an attempt to develop Cuvier's idea of the classification of pachyderms by the number of their toes. Quarterly Journal of the Geological Society of London, 4:103–141.Google Scholar
Ride, W. D. L., Sabrosky, C. W., Bernardi, G., and Melville, R. V. 1985. International Code of Zoological Nomenclature (third edition). International Trust for Zoological Nomenclature, London, 338 p.Google Scholar
Schoch, R. M., and Lucas, S. G. 1985. The Brontotheriidae, a group of Eocene and Oligocene perissodactyls from North America, Asia, and Eastern Europe, Abstract 0558. In Fuller, W. A., Nietfield, M. T., and Harris, M. A. (eds.), Abstracts of Papers and Posters, Fourth International Theriological Congress, Edmonton, Alberta, Canada.Google Scholar
Scott, W. B., and Osborn, H. F. 1887. Preliminary account of the fossil mammals from the White River Formation contained in the Museum of Comparative Zoology. Bulletin of the Museum of Comparative Zoology, 13(5):151–171.Google Scholar
Steinmann, G., and Döderlein, L. 1890. Elemente der Paläontologie. Verlag von Wilhelm Engelman, Leipzig, 848 p.Google Scholar