Coelurosauria is the most diverse clade of theropod dinosaurs. Much of this diversity is
present in Paraves—the clade of dinosaurs containing dromaeosaurids, troodontids, and …

The reproductive biology of living birds differs dramatically from that of other extant
vertebrates. Although some attributes of modern avian reproduction had their origin within …

Birds stand out from other egg-laying amniotes by producing relatively small numbers of
large eggs with very short incubation periods (average 11–85 d). This aspect promotes high …

We describe the anatomy of a new coelurosaurian theropod Aorun zhaoi gen. et sp. nov.,
from the Middle–Late Jurassic of Xinjiang, China. Histological analysis of the holotype and …

Given the large diversity and long stratigraphical range of fossil reptiles, their development is
a fundamental aspect of the evolution of ontogeny in vertebrates. Eggs, juveniles, embryos …

An investigation of the work and workers in fossil preparation labs reveals the often
unacknowledged creativity and problem-solving on which scientists rely. Those awe …

The non-avian saurischians that have associated eggshells and embryos are represented
only by the sauropodomorph Massospondylus and Coelurosauria (derived theropods), thus …

The skulls of two perinate paravians from Ukhaa Tolgod, Djadoktha Formation, Mongolia,
are described here. The skulls are nearly unique in their combination of ontogenetic age …

In the last 30 years, the Two Medicine Formation of western Montana has provided a wealth
of information about dinosaur reproductive biology. Here, we describe a fossil egg-bearing …

Electron backscatter diffraction (EBSD) is a useful tool for gathering crystallographic
information from carbonate biominerals because it maps out the orientation of crystal grains …