Meaning of PALEOZOIC ERA

WordNet Dictionary
	Definition:		[n]  from 230 million to about 544 million years ago
	Synonyms:		Paleozoic
	See Also:		Age of Fishes, Cambrian, Cambrian period, Carboniferous, Carboniferous period, Devonian, Devonian period, era, geological era, Ordovician, Ordovician period, Permian, Permian period, Silurian, Silurian period