Pterosaurs - the charismatic flying archosaurs of the Mesozoic Era - fall fairly nearly into two great assemblages: the primitive, mostly long-tailed basal forms (or 'rhamphorhynchoids') and the more strongly modified, consistently short-tailed pterodactyloids. Pterodactyloids emerged in the Middle Jurassic and persisted to the very end of the Late Cretaceous, and fossils show that they did an awful lot more in their evolution than did non-pterodactyloid pterosaurs. Several lineages evolvedSource: Thoughts from Kansas RSS Feed
No comments:
Post a Comment