This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 257:232) Giardia- "intermediate form" two nuclei, no mitochondria Multicellular Eukaryotes 1-1.2 billion years projected from on DNA sequence analysis Cambrian "Explosion" (Animals) 500 million years Burgess Shale Fossils Many of current animal phyla (echinoderms, annelids, arthropods, chordates). appearance of skeletons poss. in response to predation. Summary of animal evolution: Fig. 29.1. Summary of chordate evolution: Fig. 30.6. Origins of Plants from green algae 460 million years Fossil Record Summary of Plant evolution: Fig. 27.3. Oldest Vertebrates 500 million years jawless, fishlike...
View Full Document