Taxon:Synapsida

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Synapsida
Synapsida (Osborn, 1903) or synapsids are warm-blooded reptiles, or near-reptilian mammals. This class also includes mammo-reptilian chimeras. Animalia Chordata Synapsida Echidnata (Chimera synapsids with the upper half of a mammal and the lower half of a reptile) Pelycosauria (The more reptilian of the synapsids) Therapsida (Synapsids that are more similar to mammals than reptiles)	Beast