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Amargatitanis

Say it: ah-MAR-gah-ti-TAN-is

Name means: “Amarga giant”1

Ate: PlantsLong-necksEarly Cretaceous

Amargatitanis was a long-necked plant-eater that lived in what is now Argentina. It was a sauropod, but not one of the biggest, it was about as long as a school bus. Its fossils were found near a place called La Amarga, which means 'the bitter one' in Spanish.1

Lived

126 to 121 million years ago3

Early Cretaceous

Fossils found in

Neuquén Province, Argentina2 1

Food

Plants2 1

Length

10 to 12 m1

estimate

Weight

3.5 tonnes1

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 2.5 cars

as long as 2.5 cars parked in a rowas long as 67 bananas end to endas heavy as 120 big dogsas heavy as 700 watermelons

How big was Amargatitanis compared to YOU?

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cool stuff

Fun facts

Amargatitanis was first thought to be a titanosaur, but later scientists realized it was a dicraeosaurid, a group of sauropods with short necks and tall spines on their vertebrae.1

The only known skeleton of Amargatitanis is incomplete: just a partial hind leg, a hip bone, and two vertebrae. That makes it hard for scientists to know exactly what it looked like.1

Amargatitanis lived about 129 to 123 million years ago, during the Early Cretaceous period.1

The fossils were collected by famous paleontologist José Bonaparte in 1983, but the dinosaur wasn't named until 2007 by Sebastián Apesteguía.1

Amargatitanis shared its home with other sauropods like Amargasaurus and Zapalasaurus. They probably ate different plants to avoid competing for food.1

Like other dicraeosaurids, Amargatitanis had a long tail and strong legs. Its neck was shorter than many other sauropods, so it probably fed at heights up to about 2.7 metres (8.9 feet).1

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

?How big was Amargatitanis?

About 12 metres (39.7 feet) long and weighed around 3.5 metric tons (3.9 short tons), according to one estimate. Another study gave a higher weight of about 11.4 metric tons (12.6 short tons).1

?What did Amargatitanis eat?

It was a plant-eater, or herbivore. It probably ate low-growing plants because its neck was shorter than many other sauropods.1 3

?When did Amargatitanis live?

It lived about 129 to 123 million years ago, during the Early Cretaceous period.1

?Is Amargatitanis a dinosaur?

Yes, it is a dinosaur. It is a type of sauropod called a dicraeosaurid.1 3

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For dino experts

Scientific name: Amargatitanis
Named by: Apesteguía 20073
Group: Long-necks
Family / clade: Dicraeosauridae3
Classification: Sauropodomorpha > Sauropoda > Diplodocoidea3
Age of the rocks: 126 to 121 million years (Barremian)3
Rock formations: La Amarga3
Countries: Argentina3
Fossil records: 1 in the Paleobiology Database3
Discovery: Amargatitanis was named by Argentine paleontologist Sebastián Apesteguía in 2007. The fossils were found in 1983 by a team led by José Bonaparte in the La Amarga Formation of Argentina.1
Still debated: Scientists are not sure whether Amargatitanis is a valid genus or a nomen dubium (doubtful name), because the fossils are so few and fragmentary.2

Where the facts come from

Amargatitanis (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Amargatitanis 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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