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Arackar

Say it: ah-RAK-ar

Name means: “skeleton in the Kunza language”1

Ate: PlantsLong-necksLate Cretaceous

Arackar was a long-necked plant-eater that lived in what is now Chile. It was a titanosaur, a kind of sauropod, and it walked on four sturdy legs. Even though it was a small titanosaur, it was still about as long as a big car.2 3

Lived

84 to 66 million years ago5

Late Cretaceous

Fossils found in

Atacama Region, northern Chile3 1

Food

Plants2

Length

6.3 m3

sub-adult specimen

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

How big was it?

How long was it?

as long as 6 dogs nose to tailas long as 35 bananas end to end

How big was Arackar compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

cool stuff

Fun facts

Arackar is the third dinosaur ever named from Chile.3

Its fossils were discovered in 1993 by Carlos Arévalo in a dry ravine called Quebrada La Higuera.3 1

The only known skeleton is from a sub-adult, meaning it was not fully grown when it died.3

Arackar belongs to a group of titanosaurs called Lithostrotia, which includes other famous long-necked dinosaurs.2 3

Its closest relatives include Rapetosaurus from Madagascar and Isisaurus from India.3

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

?How big was Arackar?

The only known skeleton is about 6.3 metres (21 ft) long, which is about as long as a big car. It was a juvenile, so a fully grown adult would have been bigger, but scientists don't know exactly how big.1 4

?What did Arackar eat?

Arackar was a plant-eater, like all titanosaurs. It ate leaves and plants that grew in its warm, humid home in what is now Chile.4

?When did Arackar live?

Arackar lived during the Late Cretaceous period, about 80 to 66 million years ago.4

?Where was Arackar found?

Its fossils were found in the Atacama Region of northern Chile, about 75 km (47 mi) south of the city of Copiapó.1 4

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For dino experts

Scientific name: Arackar
Named by: Rubilar-Rogers et al. 20215
Group: Long-necks
Family / clade: Lithostrotia5
Classification: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria5
Age of the rocks: 84 to 66 million years (Campanian / Maastrichtian)5
Rock formations: Hornitos5
Countries: Chile5
Fossil records: 1 in the Paleobiology Database5
Discovery: Arackar was named in 2021 by David Rubilar-Rogers and his team. The fossils were found in 1993 and later dug up in 1994 from the Hornitos Formation in Chile.1 3

Where the facts come from

Arackar (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Arackar licanantay gen. et sp. nov. a new lithostrotian (Dinosauria, Sauropoda) from the Upper Cretaceous of the Atacama Region, northern Chile (jiriarte-sewanee.github.io)
Un nuevo dinosaurio para Chile | Museo Nacional de Historia Natural (mnhn.gob.cl)
Arackar in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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