lystrosaurus, a dicynodont therapsid from the late permian and early triassic period. - 古生代 幅插畫檔、美工圖案、卡通及圖標史前時代
bothriolepis canadensis is an extinct placoderm from the late devonian of canada. - 古生代 幅插畫檔、美工圖案、卡通及圖標
pteraspis is an extinct genus of jawless ocean fish that lived in the devonian period, seen here with a group of chelmon butterflyfish. - 古生代 幅插畫檔、美工圖案、卡通及圖標
three eogyrinus amphibians search for fish prey during the carboniferous period of england - 古生代 幅插畫檔、美工圖案、卡通及圖標石炭紀
terebratula is a modern genus of brachiopods with a fossil record dating back to the late devonian - 古生代 幅插畫檔、美工圖案、卡通及圖標
erect tree containing reptilian remains from the coal measures of nova scotia - 古生代 幅插畫檔、美工圖案、卡通及圖標一個人
diplocaulus is an extinct amphibious lepospondyl from the late permian of texas. - 古生代 幅插畫檔、美工圖案、卡通及圖標
dimetrodon limbatus, a prehistoric animal that lived during the early permian stage of the paleozoic era. - 古生代 幅插畫檔、美工圖案、卡通及圖標
