BIOSC 0160 Lecture Notes - Hominidae, Carl Linnaeus, Chordate
Document Summary
Diversity of life: diversity: number of species, there are 1. 9 million described species, still, many remain undescribed, estimate of total number: 12. 5 million, disparity: anatomical and behavioral variety, diversity is more than numbers, consider disparity in: Behavior: ecological diversity: communities and ecosystems, extensive variety in who lives together and how they affect the environment. 4. 6 billion years old: evidence, layering of rocks. Grand canyon: observed rates of deposition are slow: radioisotope dating, other evidence, hutton and lyell, hutton: gradualism (1795) Profound change results from slow but continuous geological processes. Building and erosion balance out: extension of these ideas: earth is very old. The fossil record: cuvier: pioneered paleontology (late 1700"s, history of life is recorded in fossils, extinction occurs, sequence of fossils is not the result of evolution. Kingdom phylum class order family genus species. God creates, linnaeus arranges : creator"s design is revealed, e. g.
