The field of evolutionary developmental biology is broadly focused on identifying the genetic
and developmental mechanisms underlying morphological diversity. Connecting the …

The calcitic eggshell units of amniote eggs are underlain by a soft organic layer, the
Membrana Testacea (MT), which has a mesh-like texture consisting of fibrils of organic …

Numerous new discoveries and new research techniques have influenced our
understanding of reptile development from a palaeontological perspective. They suggest for …

An ornithomimid theropod dinosaur from the Upper Cretaceous (Turonian) Bissekty
Formation of Uzbekistan is one of the basal members of Ornithomimidae. Here we present a …

Among all of the dinosaurs, the Late Cretaceous oviraptorosaurs, in addition to troodontid
dinosaurs, boast the best fossil records ranging from numerous eggs and embryos, seven …

Psittacosaurus is one of the most abundant dinosaurs known, which allows for extensive
study of its growth and form. Previous studies have evaluated growth trajectories of …

Individual egg size and clutch size of the largest of the dinosaurs (the sauropods) are both
smaller than might be expected for such large oviparous organisms. We suggest that these …

The age of Yunnanosaurus youngi, a non-sauropod basal sauropodomorph, was reported
as the Middle Jurassic. However, no basal sauropodomorphs have been reported …

Ornithischian-Formation of Yunnan Province, and China, theropod-dominated differ
significantly footprint from the assemblages skeletal record from of the the same Lower …

Hydrofluoric acid (HF) is commonly used in geological and paleontological research to
extract organic fossils for morphological and chemical studies. However, during HF …