"2009-04-24" . "Earliest Era Or Lowest Erathem"@en . . "recommended" . "2009-07-06" . . "Examples: \"Cenozoic\", \"Mesozoic\""@en . . . . "The full name of the earliest possible geochronologic era or lowest chronostratigraphic erathem attributable to the stratigraphic horizon from which the cataloged item was collected."@en . "not in ABCD" .