bn:00108197a
Adjective Concept
EN
Paleozoic
Definitions
Relations
Sources
EN
Of a geologic era within the Phanerozoic eon that comprises the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian periods from about 542 to 250 million years ago, from the age of trilobites to that of reptiles. Wiktionary
PERTAINYM
PERTAINYM (PERTAINS TO NOUNS)
WordNet 3.0 & Open English WordNet
Wiktionary