A very large pterosaur (MN 6594-V) from the Romualdo Formation (Aptian/Albian), Santana Group,...

Although crocodyliforms from the Campanian–Maastrichtian of North America have received considerable attention, taxa occurring earlier in the Cretaceous have only recently begun to be more thorough...

Megaraptoran theropod dinosaur anatomy and evolution is unclear due to the fragmentary nature of most available fossils. Here the authors report a well-preserved, late surviving megaraptoran from Argentina that clarifies our understanding of the morphology of this group and potentially provides insights into its diet and feeding strategies.

A young pachycephalosaur provides answers to questions about what they might have done with those cranial domes.