Outline: a typical sauropod

Cedar Mountain Fm., UtahNamed 2017

Mierasaurus

"Miera's lizard"

Lived
139 to 133 million years ago, Early Cretaceous
Diet
Herbivore
Group
Sauropods
Found in
United States
Named by
Royo-Torres et al. 2017

Where its fossils were found

The evidence

Today

1 find

135 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Mierasaurus

What it was like

Mierasaurus was a long-necked, four-legged plant eater from the turiasaurs, a group best known from Europe. It is known from a mostly complete skeleton, with parts of the skull and teeth.

It was a relative of Turiasaurus from Spain, which suggests these sauropods moved between Europe and North America.

Its world

It lived in the Early Cretaceous in what is now Utah, in the United States. Its bones come from the lower part of the Cedar Mountain Formation, where it shared the land with the giant raptor Utahraptor.

How it was found

Royo-Torres and colleagues named Mierasaurus in 2017, from a single find. The name honors an early explorer of the region.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Turiasauria

Sources: WikidataNamed in: R. Royo-Torres, P. Upchurch, and J. I. Kirkland, D. D. DeBlieux, J. R. Foster, A. Cobos, L. Alcalá. 2017. Descendants of the Jurassic turiasaurs from Iberia found refuge in the Early Cretaceous of western USA. Scientific Reports 7:14311:1-12