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Although the mammal-like reptiles the pelycosaurs and therapsids have long been extinct, there are around 3500 species of synapsids alive today. They live in the seas, climb mountains, dig sets, climb trees, and even build computers: they are the mammals.
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| Two modern Synapsids - a human and a cow, sculpted by a human over 2000 years ago. Click for a larger picture. |
To learn more about mammals go to the mammals homepage.
Return to the Synapsida home page