Dinosaur Institute - Diversity and Evolution of Extinct Archosaurs | Natural History Museum of Los Angeles

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Diversity and Evolution of Extinct Archosaurs

Our investigations of the diversity and evolution of extinct archosaurs (crocodiles and kin, pterosaurs, dinosaurs, and a host of early Mesozoic lineages) have focused on expanding our understanding of the physical transformations, diversity, and genealogical relationships of these reptiles during their long evolutionary history. Excluding research on dinosaurs, these investigations have included studies of Mesozoic fossils of primitive crocodilians and their predecessors, as well as research on South American pterosaurs—in particular, the peculiar filter-feeding pterodactyl Pterodaustro from the Cretaceous of central Argentina. The picture above is an inch-long snout of an early crocodile with complex teeth.