. . . . "paleozoic :: the geologic era spanning 542 - 251 million years agopasserine :: birds in the order Passeriformes more commonly known as perching birds or songbirds such as jays, blackbirds, finches, warblers and sparrowspelagic :: describes animals that live their lives almost entirely in open oceans or seas, returning to land only to breed, nest and raise youngperched wetlands :: wetlands that are" .