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long-neck giant
Archaeodontosaurus
Say it like this: “AHR-kay-o-DON-toe-SOR-us”
Archaeodontosaurus descouensi
Archaeodontosaurus ate plants and walked on four legs. It lived in the Middle Jurassic. Bones have been found in Madagascar.
- When
- Middle Jurassic (Bathonian) · roughly 168.2 to 165.3 million years ago
- Named in
- 2005 · Buffetaut, E.
- Hip height
- Not established
- Length
- Not established
- Weight
- Not established
- Found in
- Madagascar · Isalo IIIb
- Food and walking
- Herbivore · Four legs
- Kind
- long-neck giant · Sauropod
- Family branch
- Sauropoda
The story in short
The genus Archaeodontosaurus dates to 2005, the year E. Buffetaut described it. The name means “ancient-toothed lizard.”
Fossils referred to Archaeodontosaurus date to the Middle Jurassic (Bathonian), roughly 168.2 to 165.3 million years ago. Finds come from Madagascar, including the Isalo IIIb Formation. It was a herbivore and walked on four legs.
The fossils of Archaeodontosaurus are too incomplete for a responsible length, hip height, or weight, so those fields are left blank on purpose.
On the family tree it sits in Sauropoda, among the sauropod dinosaurs.
Close relatives
Aepisaurus
Aepisaurus elephantinus
Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago
Amygdalodon
Amygdalodon patagonicus
Early Jurassic (Pliensbachian · Toarcian) · roughly 192.9 to 174.7 million years ago
Asiatosaurus
Asiatosaurus mongoliensis
Early Cretaceous (Aptian · Albian) · roughly 121.4 to 100.5 million years ago