WIS 2040 Study Guide - Final Guide: Mesozoic, Woodland Salamander, Monotreme

• School: University of Florida
• Department: Wildlife Ecology and Conservation
• Course: WIS 2040
• Professor: Michael P Moulton

Document Summary

Section 9: evolution of the tetrapods: amphibians and reptiles; deformities and population declines: amphibians were first tetrapods. Fossil lobe-finned fishes share 2 important characteristics with the early amphibians: labyrinthine in-folding in tooth enamel, fore and hind limbs both have a bone pattern of one upper and two lower bones. Researchers from savanna river ecology lab found that, like the amphibians, populations of many species of reptiles were declining. The fossil reptiles diversified into 6 sub classes. The euryapsid groups of fossil reptiles lived in marine environments fossil. Amphibians produces at least 3 lineages: lissamphibia a. Some say subgroup of all modern amphibians: labyrinthodontia a. Two bones: pleurocentrum and the intercentrum: lepospondyli, spool-shaped centra (lower) fused to the neural arch (upper, this is an extinct group. Nectridea: aquatic tetrapods with a large horns on the skull, the functions of which are uncertain.