Baryonyx

Say it like this: “BAR-ee-ON-iks”

Baryonyx walkeri

Baryonyx ate meat and walked on two legs. It lived in the Early Cretaceous. Bones have been found in the United Kingdom.

Quiz me on Baryonyx

When: Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago
Named in: 1986 · Charig, A. J.; Milner, A. C.
Hip height: 2.5 m · 8 ft
Length: 7.5–10 m · 25–33 ft
Weight: 1.2–2 tonnes
Found in: the United Kingdom · Upper Weald Clay
Food and walking: Carnivore · Two legs
Kind: sharp-clawed runner · Theropod
Family branch: Baryonychinae

The story in short

Baryonyx was formally named in 1986 by A. J. Charig and A. C. Milner.

Fossils referred to Baryonyx date to the Early Cretaceous (Barremian), roughly 125.8 to 121.4 million years ago. Finds come from the United Kingdom, including the Upper Weald Clay Formation. It was a carnivore and walked on two legs.

Published estimates put Baryonyx at a length near 7.5–10 m, hips about 2.5 m high, and a body mass around 1.2–2 tonnes.

On the family tree it sits in Baryonychinae, among the theropod dinosaurs.

Close relatives

Ceratosuchops

Ceratosuchops inferodios

Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago

Cristatusaurus

Cristatusaurus lapparenti

Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago

Protathlitis

Protathlitis cinctorrensis

Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago