dental and vertebral morphology of the primitive whale zeuglodon cetoides from the middle eocene of the united states - 始新世時代 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 - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
morphological characteristics and crushing dental apparatus of the fossilized eagle ray myliobatis edwardsii from the eocene - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
skeletal reconstruction and life restoration of the primitive artiodactyl anoplotherium commune from the eocene of france - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
skeletal reconstruction and anatomical restoration of the primitive perissodactyl palaeotherium magnum from the eocene of europe - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
morphological characteristics and defensive ornamentation of the fossilized gastropod typhis tubifer from the eocene - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
morphological characteristics and shell architecture of the fossilized land snail cyclostoma arnoudii from the eocene - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
kyptoceras mammal with head down eating or drinking, isolated on white background - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
illustration of a smilodon cat from the cenozoic era. smilodon cat lived in north america from the eocene to pleistocene period and preyed on many large animals. - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
a lone sabre-tooth tiger running through a snow covered forest during earth's pleistocene epoch. - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
two smilodon cats find protection in a vast cave system in the eocene epoch. - 始新世時代 幅插畫檔、美工圖案、卡通及圖標劍齒虎
two bald eagles fly over a tree filled landscape as a saber-toothed tiger roars - 始新世時代 幅插畫檔、美工圖案、卡通及圖標劍齒虎
illustration of coryphodon with heavy, brown and white body, and long head with tusks protruding from mouth - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
two saber-toothed cats in the eocene age look for their next prey in a pine forest. - 始新世時代 幅插畫檔、美工圖案、卡通及圖標劍齒虎, 大自然
a large kalenken flightless terror bird hunting smaller eurohippus from the miocene epoch. - 始新世時代 幅插畫檔、美工圖案、卡通及圖標史前時代
a collection of some of the better known mammals that lived during the cenozoic era. - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
life comes to an end for a woolly mammoth after a valiant struggle to get out of a bog - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
indohyus prehistoric mammal, side view. one of the earliest-known relative of whales. - 始新世時代 幅插畫檔、美工圖案、卡通及圖標
