ictodosauria

English Thesaurus

1. extinct reptiles of the later Triassic period (noun.animal)

hypernym	:	animal order,
definition	:	the order of animals (noun.animal)

member holonym	:	ictodosaur,
definition	:	intermediate in form between the therapsids and most primitive true mammals (noun.animal)

member meronym	:	subclass synapsida, synapsida,
definition	:	extinct reptiles of the Permian to Jurassic considered ancestral to mammals (noun.animal)