The phylogenetic relationships of the major lineages within Dinosauria have come under
intense scrutiny in recent years. In 2017, a radical new hypothesis of early dinosaur …

The end Cretaceous mass extinction was marked by a dramatic change in biodiversity, and
the extinction of all non-avian dinosaurs. To understand the diversity of dinosaur clades prior …

Acanthodians are a poorly understood paraphyletic grade of extinct Palaeozoic fishes. They
play an increasingly prominent role in our understanding of vertebrate evolution as part of …

The end-Cretaceous (K/Pg) mass extinction event is the most recent and well-understood of
the “big five” and triggered establishment of modern terrestrial ecosystem structure. Despite …

Spatiotemporal changes in fossil specimen completeness can bias our understanding of a
group's evolutionary history. The quality of the sauropodomorph fossil record was assessed …

Fossil deposits with exceptional preservation (“lagerstätten”) provide important details not
typically preserved in the fossil record, such that they hold an outsized influence on our …

Chondrichthyes (sharks, rays, ratfish and their extinct relatives) originated and diversified in
the Palaeozoic but are rarely preserved as articulated or partly articulated remains because …

Compared to the osteological record of herbivorous dinosaurs from the Late Cretaceous
Prince Creek Formation of northern Alaska, there are relatively fewer remains of theropods …

Theropod dinosaurs are considered the main terrestrial carnivores in the Jurassic and
Cretaceous. Their rise to dominance has been linked to, among others, body size changes …

Rarity of soft tissue preservation, including of articular cartilage, in the fossil record hinders
creation of biologically-realistic mechanical models. Previous studies of articular cartilage in …