The field of comparative biomechanics examines how form, mechanical properties and
environmental interactions shape the function of biological structures. Biomechanics has …

Birds are some of the most diverse organisms on Earth, with species inhabiting a wide
variety of niches across every major biome. As such, birds are vital to our understanding of …

Summary The importance of adaptation [1–4] versus organizational constraints [5–7] in
shaping common macroevolutionary trends remains unclear [8]. The fossil record is key to …

This chapter will cover clade definitions, the relationships within clades as well as the
occasional controversial relationships between different clades. Phylogenies arising from a …

Despite the discovery of many dinosaur eggs and nests over the past 100 years, articulated
in-ovo embryos are remarkably rare. Here we report an exceptionally preserved, articulated …

Theropod dinosaurs underwent some of the most remarkable dietary changes in vertebrate
evolutionary history, shifting from ancestral carnivory 1–3 to hypercarnivory 4, 5 and …

Late Cretaceous trends in Asian dinosaur diversity are poorly understood, but recent
discoveries have documented a radiation of oviraptorosaur theropods in China and …

Caenagnathidae is a clade of derived, Late Cretaceous oviraptorosaurian theropods from
Asia and North America. Because their remains are rare and often fragmentary …

Oviraptorosaurs are among the most diverse and best-known extinct theropod groups. Their
bizarre anatomy and their social and reproductive behaviour are now well understood …

Our understanding of caenagnathid anatomy, diversity, and ecology has improved
considerably in the past twenty years, but numerous issues still remain. Among these, the …