Ichthyornis
Ichthyornis: Research Database Ichthyornithes (Aves) · Late Cretaceous (~83-72 MYA) · North America — USA, Kansas (Niobrara Formation) Research Note: Ichthyornis was a toothed bird from the Late Cretaceous of North America — one of the best-known Mesozoic birds and an important taxon for understanding the evolutionary transition from non-avian dinosaurs to modern birds. … Read more