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Largest prehistoric animals
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The largest prehistoric animals include both vertebrate and invertebrate species. Many of them are described below, along with their typical range of size. Many species mentioned might not actually be
Anteosaurus overviewing the landscape
Anteosaurus overviewing the landscape
Photo-reconstruction of Inostrancevia
Photo-reconstruction of Inostrancevia
Head reconstruction of Megawhaitsia
Head reconstruction of Megawhaitsia
A reconstruction of Repenomamus
A reconstruction of Repenomamus
Maraapunisaurus
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Maraapunisaurus is a genus of sauropod dinosaur from the Late Jurassic Morrison Formation of western North America. It contains one species, Maraapunisaurus fragillimus, which was originally named Amp
Largest prehistoric animals
…m (40 ft) in length and 2 t (2.2 short tons) in weight. Another huge sauropodomorph Yunnanosaurus youngi reached 13 m (43 ft) long. A mega-sauropod, Maraapunisaurus fragillimus (previously known as Amphicoelias fragillimus), is a contender for the largest-known dinosaur in history. It has been estimated at 58–60 m (190–197 ft…
Comparison of Maraapunisaurus (left) with the rebbachisaurids Rebbachisaurus (center) and Histriasaurus (right).
Comparison of Maraapunisaurus (left) with the rebbachisaurids Rebbachisaurus (center) and Histriasaurus (right).
Neural spine of Maraapunisaurus as drawn by E.D. Cope with parts labeled. The key rebbachisaurid features are the spinopostzygapophyseal laminae that
Neural spine of Maraapunisaurus as drawn by E.D. Cope with parts labeled. The key rebbachisaurid features are the spinopostzygapophyseal laminae that extends dorsomedially from the postzygapophyses to join and form the postspinal lamina, and the pneumatic neural spine and arch. Other rebbachisaurid features include the rather simple ("attenuated") structure of the neural spine and the respective inclinations of the centrodiapophyseal lamina and the postzygodiapophyseal laminae.
Illustration of M. fragillimus fossils, with an alligator femur (A) for scale, drawn in 1884
Illustration of M. fragillimus fossils, with an alligator femur (A) for scale, drawn in 1884
Edward Drinker Cope was the only paleontologist to study M. fragillimus before its only known specimen disappeared
Edward Drinker Cope was the only paleontologist to study M. fragillimus before its only known specimen disappeared