BIOL108 Lecture Notes - Lecture 31: Reptile, Paraphyly, Maternal Sensitivity

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL108
• Professor: Lien Luong

Document Summary

Skull holes: diapsid: two holes per side behind the eye socket. Turtles: the holes allow muscles to pass through the jaw to control jaw movement. Avian vs non-avian reptilia: reptilia is paraphyletic because birds are excluded. Some will do in sections (turtles) or all at once (snakes and lizards: leathery eggshell. Rely on environmental heat to maintain appropriate temperature. Don"t have to expend metabolic energy on heating: little parental care of young. Group of extant non-avian reptiles: order testudines: turtles and tortoises. Copulate, but don"t have any intromittent organs. Sharp projections of the jaw bone: order squamata: snakes and lizards. Kill prey by suffocation or venom: order crocodilia. Some can walk on land or even gallop. Carry young in the mouth and communicate with sound. Group of anapsid reptiles that may or may not have left any descendants. Died at end of triassic period: marine vertebrates of the triassic.