Arenysaurus
Arenysaurus was a duck-billed dinosaur that lived in what is now Spain, about 66 million years ago. It was one of the last non-bird dinosaurs before the big extinction. This plant-eater had a flat, toothy beak and maybe a hollow crest on its head.13
When did it live?
How big was it?
How long was it?
How heavy was it?
How big was Arenysaurus compared to YOU?
Just maths in your browser. Nothing is saved or sent anywhere.
Fun facts
Arenysaurus is one of the most complete and best-dated dinosaur fossils from the very end of the Cretaceous period.1
Its fossils were found in a small village called Arén, and the townspeople helped the scientists dig them out.1
Arenysaurus belonged to a group called lambeosaurines, which often had hollow, decorative crests on their skulls.1
The original bones are kept in a museum built in the town of Arén, along with a replica showing how the skeleton was found.1
Scientists think Arenysaurus was a rather early member of the lambeosaurine family, and it was closely related to dinosaurs from Asia.2
This dinosaur lived about 66 million years ago, right at the end of the Cretaceous, and died out in the big extinction event.1
Most asked questions about Arenysaurus
?How big was Arenysaurus?
Arenysaurus was a medium-sized hadrosaur, measuring about 5 to 6 metres (16 to 20 feet) long and weighing about 1 metric ton (1.1 short tons).1
?What did Arenysaurus eat?
Arenysaurus was a plant-eater, as it was a hadrosaur, or duck-billed dinosaur. It had a flat, toothy beak for chewing plants.1
?When did Arenysaurus live?
Arenysaurus lived about 66 million years ago, during the Late Cretaceous period. It was one of the last non-avian dinosaurs and went extinct in the Cretaceous, Paleogene extinction event.1
?Where was Arenysaurus found?
Arenysaurus was found in the Tremp Formation of the Pyrenees Mountains in Spain, near the village of Arén. The townspeople helped the scientists dig out the fossils.1
Ask Rex about Arenysaurus
Rex only answers questions about this page. 3 questions a day.
Rex is an AI and can make mistakes. He runs on servers in the EU and questions are never saved. Never type your name or other personal things.
For dino experts
- Scientific name
- Arenysaurus
- Named by
- Pereda-Suberbiola et al. 20093
- Group
- Duck-bills
- Family / clade
- Hadrosauridae3
- Classification
- Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae3
- Age of the rocks
- 72 to 66 million years (Maastrichtian)3
- Rock formations
- La Posa3
- Countries
- Spain3
- Fossil records
- 1 in the Paleobiology Database3
- Discovery
- Arenysaurus was named in 2009 by a team of Spanish scientists led by Xabier Pereda-Suberbiola. The fossils were found in the Tremp Formation of the Pyrenees, Spain.13
- Still debated
- Scientists are still debating exactly how Arenysaurus is related to other duck-billed dinosaurs, and whether it had a crest on its head.2
Where the facts come from
- Arenysaurus (en.wikipedia.org)
- The last hadrosaurid dinosaurs of Europe: A new lambeosaurine from the Uppermost Cretaceous of Aren (Huesca, Spain) - Scientific Publications of the Muséum national d'Histoire naturelle, Paris (sciencepress.mnhn.fr)
- Arenysaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
Every fact on this page has a number that points to its source. If we got something wrong, sorry, we are dino fans, not a science journal. Tell us at [email protected] and we will fix it.
Rex is hungry! Dino Wiki is a dad's project for his dino-loving son, free with no ads. Grown-ups can feed Rex a snack to help keep it online.Feed Rex
Parasaurolophus
Edmontosaurus
Saurolophus
Hypacrosaurus
Corythosaurus
Kritosaurus
Tyrannosaurus
Triceratops
Velociraptor
Spinosaurus
Ankylosaurus
Pteranodon