Epachthosaurus

Say it like this: “e-PAK-tho-SAWR-us”

Epachthosaurus sciuttoi

Epachthosaurus ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in Argentina.

Quiz me on Epachthosaurus

When: Late Cretaceous (Cenomanian · Turonian) · roughly 100.5 to 89.8 million years ago
Named in: 1990 · Powell, J. E.
Hip height: 2.3 m · 8 ft
Length: 13 m · 43 ft
Weight: 5 tonnes
Found in: Argentina · Bajo Barreal
Food and walking: Herbivore · Four legs
Kind: long-neck giant · Sauropod
Family branch: Lithostrotia

The story in short

Epachthosaurus was formally named in 1990 by J. E. Powell.

It lived in the Late Cretaceous (Cenomanian · Turonian), roughly 100.5 to 89.8 million years ago. Finds come from Argentina, including the Bajo Barreal Formation. It was a herbivore and walked on four legs.

Published estimates put Epachthosaurus at a length near 13 m, hips about 2.3 m high, and a body mass around 5 tonnes.

On the family tree it sits in Lithostrotia, among the sauropod dinosaurs.

Close relatives

Atacamatitan

Atacamatitan chilensis

Late Cretaceous (Cenomanian–Maastrichtian) · roughly 100.5 to 66 million years ago

Dreadnoughtus

Dreadnoughtus schrani

Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago

Elaltitan

Elaltitan lilloi

Late Cretaceous (Coniacian) · roughly 89.8 to 85.7 million years ago