Fun Facts about Craterosaurus

Craterosaurus is a poorly known stegosaur genus, which lived approximately 145 to 136 million years ago, during the Valanginian to Barremian epochs of the Early Cretaceous. It was discovered to be a Stegosaur, although it is unlikely to be its own unique genus, given it is only known from a few fossils and may be synonymous with Regnosaurus.

Craterosaurus. (photo source:

Find out more facts about Craterosaurus.

1: Craterosaurus quick facts:

Name: Craterosaurus (Greek for “Bowl Reptile”); pronounced Cra-ter-o-sore-us
When it lived: Early Cretaceous, 145 to 136 million years ago
Type of dinosaur: Armoured Dinosaur
Location: United Kingdom
Habitat: Terrestrial habitats.
Length/Weight: Unknown
Diet: Herbivorous
Distinguishing Characteristics: It is often recognised as the last surviving Stegosaurus.
Named by: Seeley (1874)

2: How do you pronounce ‘Craterosaurus’?

The name Craterosaurus  should be pronounced “Cra-ter-o-sore-us.”

3: What does the name Craterosaurus mean?

Craterosaurus is derived from the Greek words crater (meaning “cup”) and sauros (meaning “lizard”) and means “bowl lizard.” Due to the huge cup-shaped chamber of the exposed vertebra, it was mistaken for the base and portion of the brain box of the lizard. The name pottonensis refers to the Potton sandstones in which its fossils were discovered.

4: What Did Craterosaurus Look Like?

The only known specimen of a Craterosaurus is an incomplete neural arch of caudal vertebrae. Seeley referred to it as a portion of the cranium, but Nopcs altered the identification of the fossil in 1912. This fossil is extremely fragmented and poorly preserved.

Craterosaurus. (photo source: José Carlos Cortés)

The craterosaur may be the youngest specimen of the Stegosauria, even younger than the Wuerhosaurus, which is generally considered to be the last representative of the Stegosaurus. It is believed that craterosaurs were armoured dinosaurs.


Written by James

James has always been intrigued by dinosaurs, the universe, technology, and animals. With a Bachelor of Computer Science and years of writing expertise, he joined World Amazing Facts in 2021 as a staff writer.

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