Pangaea 200 mya last time continents were collected

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Pangaea 200 mya: last time continents were collected into super continent Since the Late Cretaceous (100 to 65 mya) and throughout the Cenozoic (the last 65 mya) there have been five major stages in primate evolution. These were the result of major adaptive radiation events when previous primates species moved into new regions and underwent major changes to adapt to those new regions and new species developed: 1. First radiation in the Late Cretaceous (100–65 mya): Initial emergence of primates from common ancestor. Slight divergence among early primates from insectivore ancestors. Tooth shape indicates broadening of the diet. 2. Second radiation in the Paleocene (65–55 mya): Emergence of lemur and tarsier-like forms. Grasping hands. Nails instead of claws. Vision begins to dominate over smell. 3. Third radiation in the Early or Mid-Eocene (55–45 mya): Increased arboreal quadrupedalism. Primitive higher primates appear. Larger brain and increased reliance on vision. 4. Fourth radiation in Late Oligocene/Early Miocene (30–20 mya): Differentiation into two main groups (monkeys and primitive apes).
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Main difference is diet and dentition—monkeys eat leaves. Still arboreal. 5. Fifth radiation in the Late Miocene (after 17 mya): First true apes with torso and limbs designed for hand-over-hand climbing — like chimpanzees.
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