Outline: a typical early sauropodomorph

Kayenta Fm., ArizonaNamed 2011

Sarahsaurus

"Sarah's lizard"

Type species Sarahsaurus aurifontanalis

Lived
200 to 184 million years ago, Early Jurassic
Group
Early sauropodomorphs, Massospondylidae
Found in
United States
Named by
Rowe et al. 2011

Where its fossils were found

The evidence

Today

2 finds

190 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Sarahsaurus

What it was like

Sarahsaurus was an early relative of the giant sauropods, a medium-sized plant eater with a long neck and a long tail. Its hands were strong, with large claws on the thumbs, which it may have used for grabbing plants or for defense.

Its world

It lived about 200 to 184 million years ago, in the Early Jurassic, in what is now Arizona. Its bones come from the Kayenta Formation, where it shared the land with the crested predator Dilophosaurus and the small armored Scutellosaurus.

How it was found

Rowe and colleagues named Sarahsaurus in 2011. The type species is Sarahsaurus aurifontanalis. Its closest relatives include Massospondylus from southern Africa, which suggests that animals of this kind spread widely across the joined continents of the time.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Massospondylidae

Sources: WikidataNamed in: T. B. Rowe, H.-D. Sues, and R. R. Reisz. 2011. Dispersal and diversity in the earliest North American sauropodomorph dinosaurs, with a description of a new taxon. Proceedings of the Royal Society B 278:1044-1053