Extended Data Fig. 3: Comparison of premaxilla in selected gnathostomes.
From: Largest Silurian fish illuminates the origin of osteichthyan characters
a, Maxillate placoderm Entelognathus. b, Stem sarcopterygian Achoania. c-h, Stem osteichthyan Megamastax. 3D model in anteroverntral (d), lateral (e) and ventral (g) views. f, Virtural coronal section. h, Virtural sagittal section. i, Crown sarcopterygian Eusthenopteron23. Not to scale. Diagram in a adapted from ref. 7, Springer Nature Limited.
