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New type of dinosaur eggs from Early Cretaceous of Gansu Province, China



Ben Creisler
bcreisler@gmail.com


A new advance paper:



Xie Jun-Fang, Zhang Shu-Kang, Jin Xing-Sheng, Li Da-Qing & Zhou Ling-Qi (2016)
A new type of dinosaur eggs from Early Cretaceous of Gansu Province, China
Vertebrata PalAsiatica, 54(1): 1−10
http://www.ivpp.ac.cn/cbw/gjzdwxb/pressonline/201512/t20151201_4482721.html

Pdf:
http://www.ivpp.ac.cn/cbw/gjzdwxb/pressonline/201512/P020151203499501638411.pdf

NOTE: When I downloaded the pdf, it was "damaged" and could not be
read by Adobe reader. The paper is still readable online, however, if
this happens to other people.

The Early Cretaceous outcrops in Gansu Province, northern China, have
yielded numerous dinosaur skeleton remains and tracks; however, fossil
eggs have not been reported in literatures. Here, we describe a new
type of dinosaur eggs from the Lower Cretaceous Hekou Group in the
Lanzhou-Minhe Basin, representing a new oogenus and a new oospecies,
attributed to a new oofamily. The new specimen can be distinguished
from other known dinosaur eggs by the combination of the following
eggshell micro-features: branched eggshell units lacking a compact
layer near the outer surface; interlocking or isolated multi-angular
eggshell units, as viewed in tangential sections; and irregular pore
canals. Dinosaur eggs from China largely come from the Late Cretaceous
deposits, with occasional reports from the Early Cretaceous in
Liaoning Province, northeastern China. The new discovery expands the
geological and geographical distribution of the fossil record of
dinosaur eggs in China and may reveal the origin of eggshell
microstructures of spheroolithid eggs.