Outline: a typical ornithopod

Oldman Fm., AlbertaNamed 2026

Plesiolophus

"near crest"

Type species Plesiolophus warnerensis

Lived
84 to 72 million years ago, Late Cretaceous
Diet
Herbivore
Group
Ornithopods, Hadrosauridae
Found in
Canada
Named by
McFeeters et al. 2026

Where its fossils were found

The evidence

Today

1 find

80 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Plesiolophus

What it was like

Plesiolophus was a crested duck-billed dinosaur, an early relative of Parasaurolophus. It is known from a partial skull, which shows simpler features than those of its later relatives.

Its world

It lived in the Late Cretaceous in what is now Alberta, Canada. Its skull comes from the Oldman Formation, where it shared the land with the tyrannosaurs Gorgosaurus and Daspletosaurus.

How it was found

McFeeters and colleagues named Plesiolophus in 2026, from a single find.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Hadrosauridae

Sources: WikidataNamed in: B. D. McFeeters, D. C. Evans, and M. J. Ryan, H. C. Maddin. 2026. A new parasaurolophin dinosaur (Hadrosauridae: Lambeosaurinae) from the Oldman Formation of southern Alberta. Canadian Journal of Earth Sciences 63:1-23