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Temporal range: Upper Jurassic
Ilustration original this specimen E.D. Cope Amphicoelias fragillimus
Scientific classification
Kingdom: Animalia
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Sauropodomorpha
Genus: Amphicoelias
Cope, 1878a

Amphicoelias was a genus of sauropod dinosaur, which may have included the largest dinosaur ever discovered (A. fragillimus). If it truly existed, A. fragillimus would be the longest vertebrate by a considerable margin, and it would have a mass that rivals the heaviest animal known, the blue whale. However, because the only fossil evidence for its existence was lost shortly after being discovered in the 1870s, evidence survives only in drawings, and doubt has been expressed about their accuracy.

The fossil was found in the Morrison Formation.[1]

References[change | change source]

  1. Foster J. 2007. Appendix in Jurassic West: the dinosaurs of the Morrison Formation and their world. Indiana University Press. pp. 327–329.