subclass pantotheria is a noun meaning "generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals". It carries one recorded sense.
generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals
Definitions, synonyms and semantic relations for subclass pantotheria come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.