Fossil record, Journal Year: 2024, Volume and Issue: 27(3), P. 473 - 497
Published: Dec. 27, 2024
Using four extinct land vertebrate species as examples, I discuss ontogenetic strategies well the potential influence of bite- and other external forces on formation skull. In principle, areas under biomechanical stress are strongly ossified, whereas regions with little or no show only weak ossification. this regard, all plates, arcades openings skull – even in that multi-fenestrated dinosaurs can be explained. trace changes feeding mode body posture at transition from semi-aquatic to fully terrestrial tetrapods position bite points. Through evolution, an increasing force is argued have a crucial new openings, such supratemporal antorbital fenestrae archosaurs, by changing direction flows The conquest was also associated appearance novel types behaviour inter- intraspecific combats. Horns cranial weapons were formed repeatedly, which shown alter construction when receiving forces. Changes biomechanics postcranial skeletal anatomy. Additionally, vice versa, neck muscles important impact differentiation tetrapod Finally, hypothesis provided for evolution temporal based considerations. argue synapsid (infrafenestral) morphotype ancestral amniotes related strong anterior mouth. Along reptilian lineage many parareptiles, captorhinids turtles fenestration repeatedly closed stiffening region response addition, upper opening evolved first diapsid (bifenestral) secondary. “triapsid” ceratopsid concentrated animal’s frill.
Language: Английский