Sauropsids

Cross references:  Reptiles     Dorsal Ventricular Ridge      Therapsids       Labyrinthodonts    Permian Discontinuity     Subcortical Brain          

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Sauropsida ("lizard faces") is a group of amniotes that includes all existing reptiles and birds and their fossil ancestors, including the dinosaurs, the immediate ancestors of birds. Sauropsida is distinguished from Synapsida, which includes mammals and their fossil ancestors.
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