a group of prehistoric scaumenacia lobe-finned fish from quebec, canada in the devonian period. - 古生代 幅插畫檔、美工圖案、卡通及圖標
two predatory anomalocaris invertebrates have a dispute over territorial rights. - 古生代 幅插畫檔、美工圖案、卡通及圖標
inostrancevia is a carnivorous reptile that lived during the permian age of russia. - 古生代 幅插畫檔、美工圖案、卡通及圖標恐龍
a prehistoric era cordaites plant from the carboniferous period and permian periods. - 古生代 幅插畫檔、美工圖案、卡通及圖標
scutellosaurus dinosaurs lounge around the edge of a pond with omeisaurus dinosaurs grazing nearby. - 古生代 幅插畫檔、美工圖案、卡通及圖標
hard coal formation fossil ,neuropteris flexuosa is an extinct seed fern, a type of ancient tree-like plant that reproduced with seeds and is known only from fossils - 古生代 幅插畫檔、美工圖案、卡通及圖標化石, 古老的, 黑白片
size reference chart of various synapsids from the permian geological period. - 古生代 幅插畫檔、美工圖案、卡通及圖標恐龍
male homo erectus sitting alone on a beach island next to coconuts while thinking. - 古生代 幅插畫檔、美工圖案、卡通及圖標
paradoxides tessini an extinct species of trilobite that lived during the middle cambrian period - 古生代 幅插畫檔、美工圖案、卡通及圖標
calamites prehistoric tree from the carboniferous and permian periods, isolated on white background. - 古生代 幅插畫檔、美工圖案、卡通及圖標
anomalocaris is the largest known predator of cambrian seas and hunted smaller arthropods of that time. - 古生代 幅插畫檔、美工圖案、卡通及圖標
conocardium fusiforme is a fossil species of a rostroconchian mollusk, an extinct group of marine invertebrates - 古生代 幅插畫檔、美工圖案、卡通及圖標
vertical cross section of astylospongia praemorsa revealing internal canal structures - 古生代 幅插畫檔、美工圖案、卡通及圖標
illustration of an epaphosaurus, sail-backed dinosaur from late carboniferous era - 古生代 幅插畫檔、美工圖案、卡通及圖標
net-like skeletal framework of a fenestella magnifica fragment - a life-sized and a highly magnified view of a "lace-coral," a type of colonial bryozoan - 古生代 幅插畫檔、美工圖案、卡通及圖標
