Outline: a typical ankylosaur

Frontier Fm., WyomingNamed 1889

Nodosaurus

NOH-doh-SORE-us

"knobbed lizard"

Type species Nodosaurus textilis

Lived
101 to 90 million years ago, Late Cretaceous
Diet
Herbivore
Length
estimates range from 5 to 6 m (16 to 20 ft)
Group
Ankylosaurs, Nodosauridae
Found in
United States
Named by
Marsh 1889

Where its fossils were found

The evidence

Today

1 find

95 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Nodosaurus

What it was like

Nodosaurus was an armored plant eater between 5 and 6 meters (16 to 20 feet) long. Rows of bony knobs and plates covered its back, giving it a texture like woven cloth, which inspired the type species name, Nodosaurus textilis.

It had no tail club. It walked on four legs and probably ate low-growing plants. Its skull is not known.

Its world

It lived in the Late Cretaceous of western North America. The first and best remains come from the Frontier Formation of Wyoming, and some other bones have been linked to it.

How it was found

Marsh named Nodosaurus in 1889, and the family of armored dinosaurs called nodosaurids is named after it. Three finds are known.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Nodosauridae

Sources: WikidataNamed in: O. C. Marsh. 1889. Notice of gigantic horned Dinosauria from the Cretaceous. American Journal of Science 38:173-175