INTEGBI N33 Lecture Notes - Lecture 12: Sclerotic Ring, Rhynchocephalia, Marine Reptile
31 Mar 2018
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Document Summary
Ectotherm so diurnal - (meaning active during the day) Kinetic skull skull has more hinges in lower jaw to allow for wider opening of skull; many lizards and snakes have them. How snakes use flexible teeth at roof of mouth to walk their prey down their throat. Used fins to steer and ungulate broad tail to propel. Marine lizards of the cretaceous, replaced marine crocodiles. Fish-like side to side movement to move forward (i. e. snakes) Goes along with sprawling posture and thus lepidosaurs have it. Ichthyosaurs fish-like marine reptile, from triassic to cretaceous. Dorsal fin; long snout, short neck, (looks like a dolphin) Large sclerotic rings to help gauge pressure. Are pursuit predators thus chase after prey. Marine reptiles with 4 flippers; underwater flyers with paddle-fins. Ambushes prey by suddenly swinging neck to get them from far. Group of species that get/eat food in similar ways. A specific adaptive role and position a species has in its environment.
