Archaeodontosaurus
Archaeodontosaurus was a long-necked plant-eater that lived on Madagascar during the Middle Jurassic. It had teeth that looked like those of earlier, more primitive dinosaurs, which makes it special among its giant relatives.1
When did it live?
How big was it?
How long was it?
How heavy was it?
as long as 2 cars parked in a row🍌as long as 56 bananas end to end
about as heavy as an elephant🍉as heavy as 1500 watermelons🎒as heavy as 9 whole school classes of kids🐻❄️as heavy as 17 polar bears🏃could run 100 metres in 22 seconds (the fastest human needs 9.6)How big was Archaeodontosaurus compared to YOU?
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How fast was it?
Fun facts
Archaeodontosaurus is known only from a few teeth and some other bones, so scientists are still learning about it.1
Its teeth were shaped like those of prosauropods, an older group of dinosaurs, but its skeleton shows it was a true sauropod.1
It lived about 168 to 165 million years ago, during the Bathonian stage of the Jurassic.2
The only known species is named Archaeodontosaurus descouensi, after the collector Didier Descouens.1
Its fossils were found in the Isalo III Formation of Madagascar, which was once a coastal environment.15
Some scientists think it might be a very early member of the group Gravisauria, which includes many giant sauropods.1
Most asked questions about Archaeodontosaurus
?What did Archaeodontosaurus eat?
It was a plant-eater, like other sauropods. Its teeth suggest it may have eaten hard plant food, based on the wrinkles on its teeth.14
?How big was Archaeodontosaurus?
Nobody knows for sure, because only a few teeth and some bones have been found. Scientists are still learning about its size.1
?When did Archaeodontosaurus live?
It lived about 168 to 165 million years ago, during the Middle Jurassic period.1
?Where was Archaeodontosaurus found?
Its fossils were found in the Isalo III Formation of Madagascar, which was once a coastal environment.1
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For dino experts
- Scientific name
- Archaeodontosaurus
- Named by
- Buffetaut 20055
- Group
- Long-necks
- Family / clade
- Sauropoda5
- Classification
- Sauropodomorpha > Sauropoda5
- Age of the rocks
- 168 to 165 million years (Bathonian)5
- Rock formations
- Isalo IIIb5
- Countries
- Madagascar5
- Fossil records
- 2 in the Paleobiology Database5
- Discovery
- Archaeodontosaurus was named by French paleontologist Eric Buffetaut in 2005, based on fossils found by Didier Descouens in Madagascar.15
- Still debated
- Scientists are not sure exactly where Archaeodontosaurus fits on the sauropod family tree, because its teeth are so different from other sauropods.1
Where the facts come from
- Archaeodontosaurus (en.wikipedia.org)
- PBDB Taxon (paleobiodb.org)
- Archaeodontosaurus descouensi | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
- Sauropod teeth from the Middle Jurassic of Madagascar, and the oldest record of Titanosauriformes (exa.ai)
- Archaeodontosaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
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