An embryonic oviraptorid (Dinosauria, Theropoda) from the Upper Cretaceous of Mongolia

Title Variants

Alternative: Oviraptorid embryo

Related Titles

Series: American Museum novitates, no. 3315

By

Norell, Mark A.

Clark, James Matthew, 1956-
Chiappe, Luis M.
Mongolian-American Museum Paleontological Project.
Mongolyn Shinzhlėkh Ukhaany Akademi.

Type

Book

Material

Published material

Publication info

New York, NY American Museum of Natural History c2001

Notes

Caption title.

"January 30, 2001."

Specimens collected during the ongoing Mongolian Academy of Sciences-American Museum Paleontological Project.

An embryonic oviraptorid skeleton is described within an egg from the late Cretaceous Djadokh[t]a Formation of Ukhaa Tolgod, Mongolia. The specimen comprises the ventral part of the skull and most of the mandible, a poorly preserved axial skeleton missing most of the tail, and portions of the forelimbs, shoulder girdles, pelvis, and hindlimbs. The skull is readily referable to the theropod dinosaur clade Oviraptoridae on the basis of several skull specializations (edentulous, vertically oriented premaxilla, a sinusoidally shaped lower jaw, and an unusual articulation of the vomer and premaxilla), and the postcranial skeleton is consistent with this identification. The egg is equivalent in overall shape and microstructure to those found beneath several oviraptorid skeletons recovered from the same formation. The skeleton is well ossified and, in comparison with ossification patterns in living Aves, the evidence suggests that this species was closer to the precocial end of the precocial-altricial spectrum of developmental patterns.

Subjects

Cretaceous , Dinosaurs , Eggs , Embryos , Mongolia , Oviraptoridae , Paleontology , Reptiles, Fossil , Ukhaa Tolgod

Call Number

QL1 .A436 no.3315 2001

Language

English

Identifiers

DOI: https://doi.org/10.1206/0003-0082(2001)315<0001:AEODTF>2.0.CO;2
OCLC: 46315897