Xenoposeidon

Say it like this: “ZEE-no-puh-SYE-don”

Xenoposeidon proneneukos

Xenoposeidon ate plants and walked on four legs. It lived in the Early Cretaceous. Bones have been found in the United Kingdom.

Quiz me on Xenoposeidon

When: Early Cretaceous (Berriasian) · roughly 143.1 to 137.1 million years ago
Named in: 2007 · Taylor, M. P.; Naish, D.
Hip height: 3.1 m · 10 ft
Length: 15–20 m · 49–66 ft
Weight: 2.8–7.6 tonnes
Found in: the United Kingdom · Ashdown
Food and walking: Herbivore · Four legs
Kind: long-neck giant · Sauropod
Family branch: Rebbachisauridae

The story in short

Xenoposeidon was formally named in 2007 by M. P. Taylor and D. Naish.

It lived in the Early Cretaceous (Berriasian), roughly 143.1 to 137.1 million years ago. Finds come from the United Kingdom, including the Ashdown Formation. It was a herbivore and walked on four legs.

Published estimates put Xenoposeidon at a length near 15–20 m, hips about 3.1 m high, and a body mass around 2.8–7.6 tonnes.

On the family tree it sits in Rebbachisauridae, among the sauropod dinosaurs.

Close relatives

Agustinia

Agustinia ligabuei

Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago

Amazonsaurus

Amazonsaurus maranhensis

Early Cretaceous (Aptian · Albian) · roughly 121.4 to 100.5 million years ago

Astigmasaura

Astigmasaura genuflexa

Late Cretaceous (Cenomanian · Turonian) · roughly 100.5 to 89.8 million years ago