[PDF][PDF] COMPARATIVE OSTEOLOGY OF NON-AVIAN DINOSAURS AND AVES, AND THE EVOLUTION OF FEATHERED FLIGHT

E O'C-LINFORD - 2024 - researchgate.net
… In life, these would have composed part of the rhamphotheca lingual; the part of the beak …
and consequently its flightless pennaraptoran peers, may have been for palaeobehaviours …