Dino card No. 1416 of 2,027

Petrustitan

Say it: peh-troos-TIE-tan

Name means: “stone giant”1

Ate: PlantsLong-necksLate Cretaceous

Petrustitan was a long-necked plant-eating dinosaur that lived on an island in what is now Romania. It was a titanosaur, a group that included some of the biggest land animals ever, but Petrustitan was small compared to its giant cousins.2

Lived

72 to 66 million years ago3

Late Cretaceous

Fossils found in

Sânpetru Formation, Hațeg Basin, Romania1 2

Food

Plants3

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

cool stuff

Fun facts

Petrustitan was named in 2025, making it one of the newest dinosaur names.3

Its name comes from Greek words for 'stone' and 'giant', because its fossils were found in rocky outcrops near the village of Sânpetru.1

Petrustitan lived during the Maastrichtian age, about 72 to 66 million years ago, right before the dinosaurs went extinct.3

This dinosaur was originally thought to be a species of Magyarosaurus, but scientists later decided it was different enough to get its own genus.1

Petrustitan was a dwarf dinosaur, smaller than many other titanosaurs, because it lived on an island where food was limited.2

Only a few bones of Petrustitan have been found, including a leg bone (fibula) and a shin bone (tibia).1

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

?How big was Petrustitan?

Scientists do not know its exact size, but it was a dwarf dinosaur, smaller than many other titanosaurs, because it lived on an island where food was limited.1 2

?What did Petrustitan eat?

Petrustitan was a plant-eating dinosaur, like all sauropods.1

?When did Petrustitan live?

Petrustitan lived during the Maastrichtian age, about 72 to 66 million years ago, right before the dinosaurs went extinct.1

?Is Petrustitan a dinosaur?

Yes, Petrustitan is a dinosaur. It is a titanosaurian sauropod, a type of long-necked plant-eating dinosaur.1

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For dino experts

Scientific name: Petrustitan
Named by: Díez Díaz et al. 20253
Group: Long-necks
Family / clade: Eutitanosauria3
Classification: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria3
Age of the rocks: 72 to 66 million years (Maastrichtian)3
Rock formations: Sînpetru, Sebeş3
Countries: Romania3
Fossil records: 3 in the Paleobiology Database3
Discovery: Petrustitan was first named as a species of Magyarosaurus by Friedrich von Huene in 1932. In 2025, scientists Díez Díaz and colleagues gave it its own genus name Petrustitan.1
Still debated: Scientists are still debating exactly how Petrustitan is related to other titanosaurs, especially those from South America.2

Where the facts come from

Petrustitan (en.wikipedia.org)
Full article: Revision of Romanian sauropod dinosaurs reveals high titanosaur diversity and body-size disparity on the latest Cretaceous Haţeg Island, with implications for titanosaurian biogeography (tandfonline.com)
Petrustitan 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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