Osteology of the Middle Eocene ceratomorph Hyrachyus modestus (Mammalia, Perissodactyla)

Title Variants

Alternative: Osteology of ceratomorph Hyrachyus modestus

Related Titles

Series: Bulletin of the American Museum of Natural History, number 413

By

Bai, Bin, 1981- , author

Meng, Jin (Paleontologist) , author
Wang, Yuanqing (Paleontologist) , author
Wang, Hai-bing , author
Holbrook, Luke. , author

Type

Book

Material

Published material

Publication info

New York, NY, American Museum of Natural History, [2017]

Notes

"Issued June 9, 2017."

Specimens collected from the Bridger Basin of Wyoming. (Materials and methods, page 5)

Local PDF available in high- and low-resolution versions.

The middle Eocene ceratomorph Hyrachyus has been considered a pivotal genus in ceratomorph evolution, either as a transitional form from tapiroids to rhinocerotoids, giving rise to all later rhinocerotoids, or else as the sister taxon to other rhinocerotoids. Thus, Hyrachyus has been commonly chosen as an outgroup in phylogenetic analyses of rhinocerotoids. However, little has been published on the osteology of Hyrachyus, even though well-preserved craniodental and postcranial specimens of this taxon have been in collections for decades. Here, we describe and illustrate the cranial and postcranial osteology of Hyrachyus modestus, based mainly on the exceptionally preserved specimens housed at the American Museum of Natural History, specifically AMNH FM 12664. Our bone-by-bone description provides detailed information on the osteological morphology of Hyrachyus, which should be useful for phylogenetic analyses of both rhinocerotoids and perissodactyls in general, because it provides one of the more complete and best-preserved examples of the skeleton of an earlier Eocene perissodactyl....

Subjects

American Museum of Natural History , Bones , Catalogs , Ceratomorpha , Division of Paleontology , Eocene , Evolution , Hyrachyus modestus , Mammals, Fossil , Paleontology , Perissodactyla , Perissodactyla, Fossil , Phylogeny , Rhinocerotoidea , Wyoming

Call Number

QH1 .A4 no.413 2017

Language

English

Identifiers

DOI: https://doi.org/10.1206/0003-0090-413.1.1
OCLC: 989676013