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Brief History of Animals

Brief History of Animals. Pre-Cambian Era Evidence of worm burrows 4.5 Billion Years Ago Paleozoic Era Cambrian Period Marine Algae 600 Million Years Ago Ordovician Period 1 st Vertebrates & Land Plants 500 Million Years Ago Silurian Period

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Brief History of Animals

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  1. Brief History of Animals

  2. Pre-Cambian Era Evidence of worm burrows 4.5 Billion Years Ago Paleozoic Era Cambrian Period Marine Algae 600 Million Years Ago Ordovician Period 1st Vertebrates & Land Plants 500 Million Years Ago Silurian Period 1st Jawed Fish 425 Million Years Ago

  3. Devonian Period 1st Amphibians 405 Million Years Ago Carboniferous Period Mississippian Epoch Abundant Sharks 345 Million Years Ago Pennsylvanian Epoch 1st Reptiles 310 Million Years Ago Permian Period Extinction of Many Marine Invertebrates 280 Million Years Ago

  4. Mesozoic Era Triassic Period 1st Dinosaurs 230 Million Years Ago Jurassic Period 1st Birds & Mammals 180 Million Years Ago Cretaceous Period Flowering Plants 135 Million Years Ago

  5. Cenozoic Era Tertiary Period Paleocene Epoch 1st Placental Mammals 70 Million Years Ago Oligocene Epoch Apes, Monkeys, & Whales 40 Million Years Ago Miocene Epoch Abundant Grazing Mammals 25 Million Years Ago Pliocene Epoch Large Carnivores 7 Million Yrs. Ago

  6. Cenozoic Era Quaternary Period Pleistocene Epoch Early Man 0.5 to 3 Million Years Ago Recent Epoch Modern Man 11 Thousand Years Ago – Present

  7. Domestication of Animals - Domestication of animals probably began when hunters brought back the young of the adult animals they killed. - Dogs are believed to be the 1st animals domesticated. - Discovery of a dog’s jawbone found in a cave in Iraq dates back 12,000 years. - Wolf cubs were probably domesticated and became companion animals and may have warned villages of approaching predators or enemies. - The cat’s association with humans dates back about 3,500 years ago. - Pictures of cats have been found in the Egyptian tombs. - The domestic cat probably provided pleasure and companionship, as well as controlled rats and mice.

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