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MAMMALS. All mammals have two notable features: hair and mammary glands. -In females, mammary glands produce milk to nourish the young. In addition to.
End Show Slide 1 of 50 Copyright Pearson Prentice Hall Biology.
13 Chapter 13 Earth’s History. Precambrian History 13.1 Precambrian Time 4.56 billion years ago until the start of the Cambrian period, over 4 billion.
Geologic Time Scale. Mesozoic Era 13.3 Mesozoic Era: Age of Reptiles Dinosaurs were land-dwelling reptiles that thrived during the Mesozoic era. Mesozoic.
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Class Reptilia – Amniote Origins and Nonavian Reptiles With the reptile group(s) we see better adaptation to a terrestrial existence. With the reptile.
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Geologic History of the Earth
Class Reptilia – Amniote Origins and Nonavian Reptiles
