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Unformatted text preview: -within 40 million years ago, almost all major animal phyla appear-3 fossil deposits shed light on this sequence of events o Duoshanto fossils S. China 580-570 mya microscopic fossils (tiny sponges and embryos of animals) likely all filter feeders o Eidacaran Fossils S. Australia 560-540 mya sponges, jellies, comb jellies, burrows and tracts of worm like animals no hard shells, limbs or heads with appendages o Burgess Shale Fossils British Columbia 525- 515 mya abundant sponges, jellies, comb jellies broad new animals with eyes mouths limbs shells and feeding appendages almos all modern phylia present Major events of Eesozoic-first dinos, mammals-gymnosperms radiate-dinos radiate-first angiosperms-mass extinctions at end of cretaceous Major events of Cenozoic-radiation of angiosperms and insects (coevolution)-radiation of mammals-appearance of hominids...
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- Summer '09
- Cambrian, major events, cretaceous Major