The Synapsid and Parareptile Collection includes both non-mammalian synapsids and Mesozoic mammaliaformes. The first collections at the Museum were acquired in 1853, with the transfer from the ...
Mammals (known scientifically as Mammalia) are the only living synapsids, having first evolved around 200 million years ago. But there are many extinct groups of so-called non-mammalian synapsids.
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