Arctosaurus

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Arctosaurus
Temporal range: Late Triassic
File:Arctosaurus osborni.jpg
Vertebra
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauriformes
Clade: incertae sedis
Genus: †Arctosaurus
Adams, 1875
Type species
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Adams, 1875

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Arctosaurus (meaning "arctic lizard") is an extinct genus of reptile originally classified as a small reptile of unknown affinities, but was often classified as a sauropodomorph dinosaur in the years to follow. Although it has also been classified as a theropod, recent review finds that the similarities it shares with theropods are spread throughout several groups of Late Triassic reptiles, and so it cannot be assigned any more specifically than to Archosauriformes.[1] Other authors have suggested trilophosaurian affinities.[2][3] It is based on a neck vertebra that was found on Cameron Island, Nunavut, Canada, in Late Triassic-age rocks.

References

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