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A new primitive species of the flat-headed peccary Platygonus (Tayassuidae, Artiodactyla, Mammalia) from the late Miocene of the High Plains

Donald R. Prothero and Jessica Grenader
A new primitive species of the flat-headed peccary Platygonus (Tayassuidae, Artiodactyla, Mammalia) from the late Miocene of the High Plains
Journal of Paleontology (November 2012) 86 (6): 1021-1031

Abstract

A new species of the Pliocene-Pleistocene flat-headed peccary, Platygonus pollenae, has been recovered latest Hemphillian (latest Miocene) localities from Nebraska, Kansas, Colorado, and Texas. It can be distinguished from other tayassuids by its distally rounded wing-like zygomatic process, and its subzygodont cheek teeth. In contrast to more derived species of Platygonus, it is much smaller in size, its molars are relatively more bunodont, the talon and talonid cusps are retained on the premolars of most individuals, and the mandibular symphysis lacks a median keel on the chin. In these characters, it is the earliest and the most primitive species of Platygonus known. It is more primitive than the typical Blancan species, or any of the species from the Pleistocene, and demonstrates the origin of this important Pleistocene mammal in the latest Miocene.


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 86
Serial Issue: 6
Title: A new primitive species of the flat-headed peccary Platygonus (Tayassuidae, Artiodactyla, Mammalia) from the late Miocene of the High Plains
Affiliation: Natural History Museum, Department of Vertebrate Paleontology, Los Angeles, CA, United States
Pages: 1021-1031
Published: 201211
Text Language: English
Publisher: Paleontological Society, Lawrence, KS, United States
References: 20
Accession Number: 2012-101426
Categories: Vertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
N42°00'00" - N43°00'00", W104°04'60" - W103°25'00"
N39°07'00" - N40°25'60", W102°45'00" - W101°25'00"
N35°34'60" - N36°04'60", W100°34'60" - W100°00'00"
Secondary Affiliation: Occidental College, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, The Paleontological Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201252
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