English: Restoration of various pterosaur specimens assigned to the genus Pteranodon, illustrating variation in cranial anatomy. Unpreserved portions of skulls and jaws depicted in gray. Classification/identification after Kellner, 2010.
Sources:
Bennett, S.C. (1992). "Sexual dimorphism of Pteranodon and other pterosaurs, with comments on cranial crests". Journal of Vertebrate Paleontology 12 (4): 422–434.
Bennett, S.C. (1994). "Taxonomy and systematics of the Late Cretaceous pterosaur Pteranodon (Pterosauria, Pterodactyloida)". Occasional Papers of the Natural History Museum, University of Kansas 169: 1–70.
Kellner, A.W.A. (2010). "Comments on the Pteranodontidae (Pterosauria, Pterodactyloidea) with the description of two new species". Anais da Academia Brasileira de Ciências 82 (4): 1063-1084.
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