Ch. 25 – The History of Life on Earth. Lost Worlds Macroevolution Broad pattern of evolution above the species levels Terrestrial vertebrates Mass extinctions.
Animal Body Plans. 1 st dinosaur end of dinosaurs 1 st reptiles 1 st amphibians 1 st land plants 1 st fish 1 st invertebrates Millions of Years Geologic.
CH 25 ~ HISTORY OF LIFE ON EARTH. The Origin of Life 1 st fossil evidence 3.5 BYA (Earth ~4.6 BY old) 4 stages 1 – abiotic synthesis of organic.
Chapter 9 Porifera and Cnidaria. Evolutionary Perspective Porifera – No tissues – Division of labor among independent cells – Independent origin from.
Chapter 9
Animal Body Plans
