Dino card No. 0277 of 2,027

Blasisaurus

Say it: BLAH-see-SORE-us

Name means: “Blasi lizard”1

Ate: PlantsDuck-billsLate Cretaceous

Blasisaurus was a duck-billed dinosaur that lived in what is now Spain. It had a special hook-shaped cheekbone and a narrow, D-shaped hole in its skull. This plant-eater munched on tough leaves with its many teeth.1 2

Lived

72 to 66 million years ago4

Late Cretaceous

Fossils found in

Blasi 1 site, Arén, Huesca, Spain4 1

Food

Plants4 1

Length

5 to 7 m3

Weight

400 kg to 500 kg3

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

How big was it?

How long was it?

How heavy was it?

as heavy as 17 big dogs

as long as 7 dogs nose to tailas long as 39 bananas end to endas heavy as 100 watermelons

How big was Blasisaurus compared to YOU?

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cool stuff

Fun facts

Blasisaurus is known from only a partial skull and some lower jaw bones found at the Blasi 1 site.1

Its name comes from the Blasi 1 site where it was found, and the species name honors paleontologist José Ignacio Canudo.1

Blasisaurus lived about 66 million years ago, right at the end of the age of dinosaurs.1

It was a lambeosaurine hadrosaur, meaning it was a duck-billed dinosaur that may have had a hollow crest on its head.1

Blasisaurus is closely related to another Spanish dinosaur called Arenysaurus, and together they form a group called Arenysaurini.1

Scientists think Blasisaurus and other European hadrosaurs came from Asia, crossing land bridges that appeared during the Late Cretaceous.2 1

AI-made picture of Blasisaurus — An AI-made picture of how Blasisaurus might have looked, made by a computer from what scientists know. It is a guess: the real animal may have looked different, and nobody knows its true colours.

you asked

Most asked questions about Blasisaurus

?What did Blasisaurus eat?

Blasisaurus was a plant-eater. It munched on tough leaves with its many teeth.1

?How big was Blasisaurus?

It was a medium-sized ornithopod, but its exact size is not known from the partial skull fossils.1

?Where did Blasisaurus live?

It lived in what is now Spain, in the Arén Formation.1

?Did Blasisaurus have a crest?

Blasisaurus was a lambeosaurine hadrosaur, so it may have had a hollow crest on its head, but no crest bones were found with the fossil.1

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For dino experts

Scientific name: Blasisaurus
Named by: Cruzado-Caballero et al. 20104
Group: Duck-bills
Family / clade: Hadrosauridae4
Classification: Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae4
Age of the rocks: 72 to 66 million years (Maastrichtian)4
Rock formations: Arén4
Countries: Spain4
Fossil records: 1 in the Paleobiology Database4
Discovery: Blasisaurus was named in 2010 by Spanish paleontologists Penélope Cruzado-Caballero, Xabier Pereda-Suberbiola, and José Ignacio Ruiz-Omeñaca. The fossils were found at the Blasi 1 site in Arén, Huesca, Spain.4 1
Still debated: Scientists are not sure exactly where Blasisaurus fits in the lambeosaurine family tree. Some think it belongs to the tribe Lambeosaurini, while others place it in Parasaurolophini.1

Where the facts come from

Blasisaurus (en.wikipedia.org)
Blasisaurus canudoi gen. et sp. nov., a new lambeosaurine dinosaur (Hadrosauridae) from the Latest Cretaceous of Arén (Huesca, Spain) (cdnsciencepub.com)
Hallados en Huesca restos de un dinosaurio desconocido en Europa (heraldo.es)
Blasisaurus 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.

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