Outline: a typical ornithopod

Aguja Fm., TexasNamed 2009

Angulomastacator

"bent chewer"

Type species Angulomastacator daviesi

Lived
84 to 72 million years ago, Late Cretaceous
Diet
Herbivore
Group
Ornithopods, Hadrosauridae
Found in
United States
Named by
Wagner and Lehman 2009

Where its fossils were found

The evidence

Today

1 find

80 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Angulomastacator

What it was like

Angulomastacator was a lambeosaurine duckbill, a plant eater that probably had a hollow crest. It is known from a single upper jaw bone, which is bent downward in an odd way.

Its world

It lived in the Late Cretaceous, in what is now Texas. It comes from the Aguja Formation, a coastal land shared with the horned Agujaceratops, the duckbill Kritosaurus and the armored Panoplosaurus.

How it was found

Wagner and Lehman named Angulomastacator in 2009. The type species is Angulomastacator daviesi. Its name also refers to the bend of a river near where it was found.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Hadrosauridae

Sources: WikidataNamed in: J. R. Wagner and T. M. Lehman. 2009. An enigmatic new lambeosaurine hadrosaur (Reptilia: Dinosauria) from the Upper Shale Member of the Campanian Aguja Formation of trans-Pecos Texas. Journal of Vertebrate Paleontology 29(2):605-611