合弓纲 hégōnggāng synapsids Definitions Defs Origin Strokes Stroke Words Sentences Sents 合弓纲 合弓綱 hégōnggāng synapsids (zoology) Synapsida; a group of animals that includes mammals and their extinct relatives characterized by a single opening in the skull behind each eye
合弓纲 合弓綱 hégōnggāng synapsids (zoology) Synapsida; a group of animals that includes mammals and their extinct relatives characterized by a single opening in the skull behind each eye
