bothriolepis canadensis is an extinct placoderm from the late devonian of canada. - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
hemicyclaspis murchisoni is an ostracoderm from the early devonian of england. - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標海洋生物
conocardium fusiforme is a fossil species of a rostroconchian mollusk, an extinct group of marine invertebrates - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
vertical cross section of astylospongia praemorsa revealing internal canal structures - 希留利亞紀 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 - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
ancient cephalopod - planispiral shell geometry and suture patterns of clymenia sedgwickii - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
fossilized wing venation of platephemera antiqua - detailed view of a fossilized insect wing - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
morphological diversity of lower silurian brachiopods from britain and america - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
exogyra is an extinct genus of fossil marine oysters in the family gryphaeidae, the foam oysters or honeycomb oysters - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
diverse morphological features of upper silurian trilobites from europe and north america - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
stratigraphic column illustrating the succession of triassic sedimentary layers in central europe - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
anatomical reconstruction of the soft tissues and internal chambers of orthoceras - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
spiriferida (spirigera concentrica) is an order of extinct articulate brachiopod fossils which are known for their long hinge-line, which is often the widest part of the shell - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
anatomical structure of the central disc and segmented arms in protaster sedgwickii - 希留利亞紀 幅插畫檔、美工圖案、卡通及圖標
