"a major division of geological time; an era is usually divided into two or more periods"@en-us . . . . . . "a major division of geological time; an era is usually divided into two or more periods"@en-us . . "era"@en-us . "115248020"^^ . "114386708"@en-us . "0"^^ . . "15248020-n"^^ . "geological era"@en-us . . . . . . "110954662"@en-us . "0"^^ . "era"^^ . .