formerly a suborder of Stegocephalia; amphibia having vertebrae whose component elements are fused into a single piece: "most vertebrates are stereospondylous"
formerly a suborder of Stegocephalia; amphibia having vertebrae whose component elements are fused into a single piece; "most vertebrates are stereospondylous"
formerly a suborder of Stegocephalia; amphibia having vertebrae whose component elements are fused into a single piece