Mammut pacificus sp. nov., a newly recognized species of mastodon from the Pleistocene of western North America

PeerJ
By: , and 

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Abstract

A new species of mastodon from the Pleistocene of western North America, Mammut pacificus sp. nov. is herein recognized, with specimens identified throughout California and from two localities in southern Idaho. This new taxon differs from the contemporaneous M. americanum in having narrower teeth, most prominently in M3/m3, as well as six sacral vertebrae, femur with a proportionally greater mid-shaft diameter, and no mandibular tusks at any growth stage. All known Pleistocene Mammut remains from California are consistent with our diagnosis of M. pacificus, which indicates that M. americanum was not present in California.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Mammut pacificus sp. nov., a newly recognized species of mastodon from the Pleistocene of western North America
Series title PeerJ
DOI 10.7717/peerj.6614
Volume 7
Year Published 2019
Language English
Publisher PeerJ
Contributing office(s) Geosciences and Environmental Change Science Center
Description e6614, 58 p.
Country Canada, Mexico, United States