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GEOREF RECORD

Protoreodon walshi, a new species of agriochoerid (Oreodonta, Artiodactyla, Mammalia)) from the late Uintan of San Diego County, California

Jessica M. Theodor
Protoreodon walshi, a new species of agriochoerid (Oreodonta, Artiodactyla, Mammalia)) from the late Uintan of San Diego County, California
Journal of Paleontology (November 1999) 73 (6): 1179-1190

Abstract

A new agriochoerid, Protoreodon walshi new species, from the middle Eocene Santiago Formation, San Diego County, California, is described from the Jeff's Discovery and Rancho del Oro local faunas, considered to be late Uintan in age. It differs from most other species of Protoreodon in having an undivided P (super 4) para-metacone and a P (super 3) protocone connected to the paracone by a buccolingual crest. Associated postcranial material is abundant and well preserved. The postcranial skeleton shows several features which probably represent the primitive oreodont condition, including closely appressed metapodials, hoofed ungual phalanges, the lunar in broad contact with both the magnum and the unciform in anterior view, and having the magnum larger than the trapezoid. Two specimens of a larger morph, Protoreodon cf. walshi, show a different P (super 3) morphology and might represent another new species. Diversity of agriochoerid oreodonts in California is at least as high as has been reported for the Vieja Group of Texas, although not as high as in the Uinta Basin of Utah, where the genus Diplobunops is also present.


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 73
Serial Issue: 6
Title: Protoreodon walshi, a new species of agriochoerid (Oreodonta, Artiodactyla, Mammalia)) from the late Uintan of San Diego County, California
Author(s): Theodor, Jessica M.
Affiliation: University of California at Berkeley, Department of Integrative Biology and Museum of Paleontology, Berkeley, CA, United States
Pages: 1179-1190
Published: 199911
Text Language: English
Publisher: Paleontological Society, Lawrence, KS, United States
References: 31
Accession Number: 2000-009878
Categories: Vertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables, sketch map
N32°30'00" - N33°30'00", W117°40'00" - W116°10'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200004
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