Dino card No. 1223 of 2,027

Muyelensaurus

Say it: moo-YEL-en-SORE-us

Name means: “Muyelen lizard, after an indigenous name for the Colorado River in Argentina”1

Ate: PlantsLong-necksLate Cretaceous

Muyelensaurus was a long-necked, plant-eating dinosaur that lived in what is now Argentina. It was a titanosaur, a group of sauropods known for their huge size, but Muyelensaurus was more slender than its relatives.1

Lived

90 to 84 million years ago4

Late Cretaceous

Fossils found in

Neuquén province, Patagonia, Argentina1

Food

Plants4

Length

13.4 m2

largest known specimen

Weight

5.5 tonnes2

largest known specimen

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 4 cars

as long as 3 cars parked in a rowas long as 74 bananas end to endabout as heavy as an elephantas heavy as 1100 watermelons

How big was Muyelensaurus compared to YOU?

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cool stuff

Fun facts

Muyelensaurus lived about 86 to 85 million years ago, during the Late Cretaceous.1

Its fossils were first thought to be from the Portezuelo Formation, but later scientists realized they came from the Plottier Formation.1

The name Muyelensaurus comes from 'Muyelen', an indigenous name for the Colorado River in Argentina.1

Muyelensaurus was more slender than other titanosaurs, meaning it had a lighter build.1

The only known species is Muyelensaurus pecheni.1

AI-made picture of Muyelensaurus — An AI-made picture of how Muyelensaurus 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 Muyelensaurus

?How big was Muyelensaurus?

Scientists do not know its exact size yet, but it was a middle-sized sauropod, more slender than other titanosaurs.1 3

?What did Muyelensaurus eat?

It was a plant-eater, like all sauropods. It had suboval teeth with crests, good for stripping leaves.1 3

?When did Muyelensaurus live?

It lived about 86 to 85 million years ago, during the Late Cretaceous period.1 4

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For dino experts

Scientific name: Muyelensaurus
Named by: Calvo et al. 20074
Group: Long-necks
Family / clade: Rinconsauria4
Classification: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria4
Age of the rocks: 90 to 84 million years (Coniacian / Santonian)4
Rock formations: Plottier4
Countries: Argentina4
Fossil records: 1 in the Paleobiology Database4
Discovery: Muyelensaurus was named in 2007 by paleontologists Jorge Calvo, Bernardo González Riga, and Juan Porfiri. The fossils were found in the Neuquén province of Patagonia, Argentina.1

Where the facts come from

Muyelensaurus (en.wikipedia.org)
Muyelensaurus pecheni | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
A new titanosaur sauropod from the Late Cretaceous of Neuquén, Patagonia, Argentina (researchgate.net)
Muyelensaurus 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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