the skull of anchitherium latin: anchitherium sp. is on a white background. paleontology late pliocene

anatomy ancient animal animals background biology bone bones brain brown bullfrog cranium danger dead death decay detail dinosaur dog face fat fossil frog front geology grave halloween head health horror human isolated jaw late life lower mammal medical medicine natural nature object old paleontology pan physiology pliocene prehistoric scary science skeleton skull species spooky teeth troglodytes white zoology