BIO 3102 Study Guide - Diapsid, Temporal Bone, Anapsid
Document Summary
Amniote animals:-were able to live on dry land, and did not rely on standing water. Amniote eggs w/ 4 specialized membranes and resistant to desiccation. Egg had membranes that protected embryo and facilitated gas exchange. Can be divided into 3 groups based on number of bony arches in temporal region of skull. Anapsid:-one of the 3 lineages of the reptile group. Not temporal arches and no spaces on the side of the skull. Diapsids:-two temporal arches and descendants include dinosaurs, lizards, snakes, crocodilians. 2 groups of diapsids; one becomes extinct, one will survive. Had one temporal arch on each side of head. Temporal fenestra:-bilaterally symmetrical holes in the temporal bone; number of which indicate whether species is anapsid, diapsid, synapsid. Have to do with jaw musculature; not seen in anapsids. Another defining feature are fruits (helps protect/disperse seeds) Most ecologically diverse plant on planet; grow on dry land and wetlands, freshwater, seas.
