page_title: Polonosuchus
section_title: Vertebrae
hierarchical_section_title: Polonosuchus / Description / Vertebrae
caption_attribution_description: Polonosuchus vertebrae, Museum of Evolution of Polish Academy of Sciences, Warsaw.
context_page_description: Polonosuchus is a genus of rauisuchian known from the late Triassic of Poland. It was a huge predator about 5–6 metres in length and, like all rauisuchians, was equipped with a large head of long sharp teeth. The legs were placed almost underneath the body, unlike most reptiles, which would have made it quite fast and a powerful runner. The appearance was very similar to that of the more known Postosuchus, of North America, and shared with the latter the ecological niche of the apex predator.
context_section_description: The centrum of the atlas vertebra is the only part preserved, and has a crescent shape and rounded anterior surface. The other two vertebrae have centra longer than they are tall. The axis has a triangular neural spine and relatively small prezygapophyses, at least compared to the stout postzygapophyses. The third cervical vertebra has an incomplete neural spine and equally sized post- and prezygapophyses. The caudal vertebrae have pronounced facets for the haemal arches, and tall plate-like neural spines. The centra have smooth convex ventral surfaces, and as the vertebrae are fairly large, they probably come from the anterior part of the tail.
caption: Vertebrae
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