Mammuthus jeffersoni Osborn, 1922

Jefferson mammoth



Taxonomy & Nomenclature

Synonym/s: Elephas jeffersonii Osborn, 1922; Parelephas jeffersonii Osborn, 1922


Now considered a synonym of M. columbi (Lister, 2017).


Conservation Status

Invalid (synonym)

Last record: Late Pleistocene



North America












Original scientific description:

Osborn, H. F. (1922). Hesperopithecus, the first anthropoid primate found in America. American Museum Novitates 37: 1-5.


Other references:

Hatt, R. T. (1963). The Mastodon of Pontiac. News Letter, Cranbrook Inst. Sci. 32(6): 62-64.

Hay, O. P. 1923. The Pleistocene of North America and its vertebrated animals from the states east of the Mississippi River and from the Canadian provinces east of longitude 95[D]. Carnegie Institution of Washington Publication 32: 1-532.

Joger, U. and Garrido, G. (2001). Phylogenetic position of Elephas, Loxodonta and Mammuthus, based on molecular evidence, pp. 544-547. In: Cavarretta, C., Gioia, P., Mussi, M. and Palombo, M. R. (eds.). The World of Elephants – International Congress, Rome. Proceedings of the 1st international congress – Consiglio nazionale delle ricerche, Rome. [automatic download]

Lister, Adrian M. (2017). On the type material and evolution of North American mammoths. Quaternary International 443(A): 14-31. [Abstract]

Oltz, D. F., Jnr., and Kapp, R. O. (1963). Plant remains associated with Mastodon and Mammoth remains in central Michigan. Am. Midl. Nat. 70(2): 339-346.

Saunders, J. J., Grimm, E. C., Widga, C. C., Campbell, G. D., Curry, B. B., Grimley, D. A., Hanson, Paul R., McCullum, Judd P., Oliver, James S. and Treworgy, J. D. (2010). Paradigms and proboscideans in the southern Great Lakes region, USA. Quaternary International 217(1): 175-187.

Skeels, M. A. (1962). The mastodons and mammoths of Michigan. Papers of the Michigan Academy of Science, Arts, and Letters 97: 101-133.

Wilson, Richard Leland. (1967). The Pleistocene vertebrates of Michigan. Papers of the Michigan Academy of Science, Arts, and Letters 52: 197-234.


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