A Turonian pterosaur turnover?

The early Cretaceous had a great diversity of pterosaurs. All four major groups of pterodactyloid - Archaeopterodactyloidea, Dsungaripteridae, Pteranodontoidea, and Azhdarchoidea - are present, and very diverse (Barrett et al., 2008). Even a few anurognathids were still present until at least the Aptian. By the end of the Cretaceous, this diversity had been reduced to … Continue reading A Turonian pterosaur turnover?