GEOL 107 Lecture Notes - Lecture 18: Cold Prey, Periglaciation, Thermoregulation
25 Oct 2017
School
Course
Professor
Document Summary
Leaving the water - tetrapods and the origin of thermoregulation. Cowen, 2013, chapters 8 (second half) and 9. As we saw in lecture 17, a succession of land plant floras radiated over the land surface in the. What were the implications of this on the early evolution of vertebrates: paleozoic amphibians (see cowen, 2013, fig. Earliest tetrapods were primitive amphibians (rough leathery skin totally unlike modern smooth- skinned amphibians like frogs and salmanders) First appeared in the late devonian (see lecture 16) Ecosystem included totally aquatic fish-eaters (mostly in shallow water), lake margin- and swamp-dwellers. Entirely carnivorous, feeding on fish, insects and other invertebrates, and other amphibians (top terrestrial carnivores) Reptile-like amphibians (and true reptiles) occur by mid-carboniferous: early reptiles. Reptiles, mammals and birds grouped together as the amniotes. Development of the cleidoic (literally closed") egg permitted true colonization of the land. Termed a private pond by vertebrate paleontologist michael benton. Semipermeable shell allows gases but not fluids to diffuse.
