Dino card No. 0437 of 2,027

Comahuesaurus

Say it: ko-MAH-way-SORE-us

Name means: “Comahue lizard, after the Comahue region in Argentina”1

Ate: PlantsLong-necksEarly Cretaceous

Comahuesaurus was a big, long-necked plant eater that lived in what is now Argentina. It belonged to a group of sauropods called rebbachisaurids, and its bones were found all jumbled together in what might have been a flash flood.1

Lived

120 to 110 million years ago5

Early Cretaceous

Fossils found in

Cerro Aguada del León, Neuquén Province, Argentina (Lohan Cura Formation)3 1

Food

Plants2

Length

up to 14 m4

estimate, largest known specimen

Weight

up to 5.8 tonnes4

estimate, 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 78 bananas end to endabout as heavy as an elephantas heavy as 1200 watermelons

How big was Comahuesaurus compared to YOU?

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cool stuff

Fun facts

Comahuesaurus is known from at least three individuals that were buried together in a single bone bed, possibly during a flash flood or landslide.1

Its humerus (upper arm bone) was 67.5 cm (2.21 ft) long and its femur (thigh bone) was 113 cm (3.71 ft) long, showing it was a large sauropod.1

It had a very robust humerus, meaning its front legs were quite sturdy.1

The name Comahuesaurus comes from the Mapuche word Comahue, meaning 'place of abundance' or 'where the water hurt'.3

This dinosaur lived during the Early Cretaceous, about 117 to 100 million years ago.1 5

At first, scientists thought Comahuesaurus was a species of Limaysaurus, but later they realized it was a new genus because of many unique features in its bones.1 3

AI-made picture of Comahuesaurus — An AI-made picture of how Comahuesaurus 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.

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For dino experts

Scientific name: Comahuesaurus
Named by: Carballido et al. 20125
Group: Long-necks
Family / clade: Rebbachisauridae5
Classification: Sauropodomorpha > Sauropoda > Diplodocoidea5
Age of the rocks: 120 to 110 million years (Aptian / Albian)5
Rock formations: Lohan Cura5
Countries: Argentina5
Fossil records: 1 in the Paleobiology Database5
Discovery: Comahuesaurus was first described in 2012 by a team led by José Luis Carballido. The fossils were dug up from the Lohan Cura Formation in Argentina and were originally thought to belong to Limaysaurus.1 5
Still debated: Scientists are still not sure exactly how big Comahuesaurus was, because they have not found a complete skeleton.1

Where the facts come from

Comahuesaurus (en.wikipedia.org)
Comahuesaurus Carballido et al. 2012 - Encyclopedia of Life (eol.org)
A new basal rebbachisaurid (Sauropoda, Diplodocoidea) from the Early Cretaceous of the Neuquén Basin; evolution and biogeography of the group (staff.mef.org.ar)
Comahuesaurus windhauseni | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
Comahuesaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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