triassic period

English Thesaurus

1. from 230 million to 190 million years ago; dinosaurs, marine reptiles; volcanic activity (noun.time)

instance hypernym	:	geological period, period,
definition	:	a unit of geological time during which a system of rocks formed (noun.time)

part meronym	:	age of reptiles, mesozoic, mesozoic era,
definition	:	from 230 million to 63 million years ago (noun.time)