Unformatted text preview: Cone-bearing plants (gymnosperms) ii. Dinosaurs originate b. Jurassic Period i. Dinosaurs abundant, diverse ii. Gymnosperms dominate landscape c. Cretaceous Period i. Flowering plants (angiosperms) appear ii. Many organisms (including dinosaurs) become extinct, (Cretaceous Extinction) IV. Cenozoic Era (65 million years ago – present) a. Tertiary Period i. Paleocene epoch –radiation of mammals, birds, pollinating insects ii. Eocene epoch – Angiosperm dominance increases, continued radiation of most modern mammalian orders iii. Oligocene epoch – origins of most primates, including apes iv. Miocene epoch – continued radiation of mammals & angiosperms v. Pliocene epoch – apelike ancestors of humans appear b. Quaternary Period i. Pleistocene epoch – Ice age, humans appear ii. Recent – Historical time...
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- Spring '11
- Biology, Extinction event, Gondwana, c. Cretaceous Period