A large alvarezsaurid from the late Cretaceous of Mongolia

Title Variants

Alternative: Ukhaa Tolgod alvarezsaurid

Related Titles

Series: American Museum novitates, no. 3648

By

Turner, Alan H. (Alan Hamilton)

Nesbitt, Sterling J.
Norell, Mark A.

Type

Book

Material

Published material

Publication info

New York, NY, American Museum of Natural History, c2009

Notes

Caption title.

"June 25, 2009."

We report a new alvarezsaurid, Kol ghuva, from the late Cretaceous of Mongolia that demonstrates that the clade was not restricted to small taxa (~3-15 kg). The specimen was found at the Ukhaa Tolgod locality, which has previously produced only a single diminutive alvarezsaurid, Shuvuuia deserti. Although known only from a well-preserved right foot, the new taxon is diagnosable by the following combination of characters: extensor grooves on digit IV phalanges; robust flexor tubercle on pedal unguals; MT III does not reach ankle; accessory dorsomedial flange absent on the medial side of the distal end of the MT II; MT II shorter than MT IV; and MT III extends higher proximally than other alvarezsaurids (more than K total metatarsus length). The new taxon provides additional insight into the diversity of this clade and the dinosaurian assemblage of Ukhaa Tolgod.

Subjects

Cretaceous , Dinosaurs , Kol ghuva , Mongolia , Paleontology , Reptiles, Fossil , Ukhaa Tolgod

Call Number

QL1 .A436 no.3648 2009

Language

English

Identifiers

OCLC: 419331191