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early dinosaur · Disputed
Caseosaurus
Say it like this: “KAY-zee-oh-SOR-uhs”
Caseosaurus crosbyensis
Caseosaurus ate meat and walked on two legs. It lived in the Late Triassic. Bones have been found in the United States.
- When
- Late Triassic (Carnian · Norian) · roughly 237 to 205.7 million years ago
- Named in
- 1998 · Hunt, A. P.; Lucas, S. G.; Heckert, A. B.; Sullivan, R. M.; Lockley, M. G.
- Hip height
- Not established
- Length
- 2 m · 7 ft
- Weight
- 50 kg · 110 lb
- Found in
- the United States · Tecovas
- Food and walking
- Carnivore · Two legs
- Kind
- early dinosaur · Early dinosaur
- Family branch
- Herrerasauria
The story in short
The genus Caseosaurus dates to 1998, the year A. P. Hunt and colleagues described it. The name honors a person tied to the fossil or its study.
Fossils referred to Caseosaurus date to the Late Triassic (Carnian · Norian), roughly 237 to 205.7 million years ago. Finds come from the United States, including the Tecovas Formation. It was a carnivore and walked on two legs.
Published estimates put Caseosaurus at a length near 2 m and a body mass around 50 kg.
On the family tree it sits in Herrerasauria, among the earliest dinosaurs.