Extinct reptiles of the Permian to Jurassic considered ancestral to mammals. Synonym: subclass Synapsida.
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Words linked to "Synapsida" : order Therapsida, Therapsida, class, Ictodosauria, Reptilia, order Pelycosauria, Pelycosauria, order Ictodosauria, subclass Synapsida, class Reptilia |
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