Dino card No. 1853 of 2,027

Udelartitan

Say it: oo-del-ar-TIE-tan

Name means: “Udelartitan means 'giant of the University of the Republic' (UdelaR) and 'titan' from Greek mythology”1

Ate: PlantsLong-necksLate Cretaceous

Udelartitan was a long-necked plant-eating dinosaur that lived in what is now Uruguay. It was about as long as a school bus and walked on four sturdy legs. This titanosaur is one of the most complete sauropods ever found in Uruguay.3 1

Lived

100 to 84 million years ago3

Late Cretaceous

Fossils found in

Guichón Formation, near Quebracho, Paysandú Department, Uruguay3 2

Food

Plants3

Length

15 to 16 m2

estimated based on other titanosaurs

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

How big was it?

as long as 4 cars parked in a rowas long as 89 bananas end to end

How big was Udelartitan compared to YOU?

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cool stuff

Fun facts

Udelartitan had a special first tail vertebra that was biconvex, meaning it was rounded on both ends like a ball. This is rare among sauropods.1

Scientists found 60 tail vertebrae from one Udelartitan, which is a lot for a sauropod.1

Udelartitan lived during the Late Cretaceous period, about 100 to 84 million years ago.3

The fossils of Udelartitan were discovered in 2006 in a gully in Uruguay.2

Udelartitan is a saltasauroid, which is a group of titanosaurs that includes some of the smallest sauropods.1

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

?How big was Udelartitan?

About 15 to 16 metres long, which is roughly the length of two school buses.2 1

?What did Udelartitan eat?

It was a plant-eating dinosaur, eating leaves and other vegetation.3

?When did Udelartitan live?

It lived during the Late Cretaceous period, roughly 100 to 84 million years ago.2

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For dino experts

Scientific name: Udelartitan
Named by: Soto et al. 20243
Group: Long-necks
Family / clade: Saltasauroidea3
Classification: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria3
Age of the rocks: 100 to 84 million years (Cenomanian / Santonian)3
Rock formations: Guichón3
Countries: Uruguay3
Fossil records: 1 in the Paleobiology Database3
Discovery: Udelartitan was named in 2024 by Matías Soto and colleagues. The fossils were found in 2006 near Quebracho, Uruguay, and include bones from at least two individuals.3 2
Still debated: Scientists are not sure whether Udelartitan was a saltasaurine saltasaurid or a non-saltasaurid saltasauroid. They also debate the exact age of the rocks where it was found.1

Where the facts come from

Phylogenetic relationships of a new titanosaur (Dinosauria, Sauropoda) from the Upper Cretaceous of Uruguay (sciencedirect.com)
Udelartitan (en.wikipedia.org)
Udelartitan 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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