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Adeopapposaurus

Name means: “far eating lizard”1
Ate: PlantsLong-necksEarly Jurassic

Adeopapposaurus was a long-necked plant-eater that lived in what is now Argentina during the Early Jurassic. It walked on two legs and used its long neck to reach leaves high up in trees. Its name means 'far eating lizard' because of that super long neck!1

Lived
201 to 175 million years ago4
Early Jurassic
Fossils found in
San Juan Province, Argentina14
Food
Plants12
Length
3 to 4 m1
estimated
Weight
70 kg to 100 kg1
Height
1 to 1.5 m1
at the hips
Top speed
about 41 km/h (25 mph)
Running, estimate

When did it live?

Triassic
Jurassic
Cretaceous
252 million years ago20114566, the asteroid

How big was it?

How long was it?

Adeopapposaurus about 4 m longA bicycle about 1.8 mA car about 4.5 mAn elephant, the biggest land animal today about 6.5 mA house about 10 m

How tall was it?

A dogabout 0.6 mAdeopapposaurusabout 1.5 m tall🚪A doorabout 2 mA house with 2 floorsabout 7 m

at the hips

How heavy was it?

as heavy as 3 big dogs
as long as 4 dogs nose to tailas long as 22 bananas end to endas heavy as 20 watermelonsup to the handle of a door

How big was Adeopapposaurus compared to YOU?

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

How fast was it?

cool stuff

Fun facts

1

Adeopapposaurus had a horny beak on the tips of its upper and lower jaws, like a turtle's beak, to help it eat tough plants.12

2

It had 11 very long neck bones (cervical vertebrae) that made its neck extra stretchy for reaching high branches.2

3

Scientists first thought Adeopapposaurus fossils were from a different dinosaur called Massospondylus, but later realized it was a new genus.1

4

Four partial skeletons and two partial skulls of Adeopapposaurus have been found, giving scientists a good look at its body.1

5

Adeopapposaurus lived during the Early Jurassic, about 200 to 183 million years ago.1

6

Its fossils were discovered in the Cañón del Colorado Formation in northwestern Argentina.12

AI-madeAI-made picture of Adeopapposaurus
An AI-made picture of how Adeopapposaurus 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 Adeopapposaurus

?How big was Adeopapposaurus?

Scientists have not given an exact size, but it was a medium-sized dinosaur with a long neck. It had 11 neck bones and 13 back bones, and its body was probably a few metres long, though no exact length is known.13

?What did Adeopapposaurus eat?

It was a plant-eater. It had a horny beak on its jaws to help it eat tough plants, and it used its long neck to reach leaves high in trees.13

?Did Adeopapposaurus have feathers?

No source says it had feathers. It was a dinosaur, but no fossil evidence of feathers has been found for Adeopapposaurus.1

?When did Adeopapposaurus live?

It lived during the Early Jurassic, about 200 to 183 million years ago, in what is now Argentina.1

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Myth buster

Myth: Adeopapposaurus was a giant, four-legged sauropod like Brachiosaurus.

Truth: Adeopapposaurus was a smaller, two-legged sauropodomorph, only about 3 to 4 meters long, and it walked on its hind legs.1

For dino experts

Scientific name
Adeopapposaurus
Named by
Martínez 20094
Group
Long-necks
Family / clade
Massospondylidae4
Classification
Sauropodomorpha4
Age of the rocks
201 to 175 million years (Hettangian / Toarcian)4
Rock formations
Cañon del Colorado4
Countries
Argentina4
Fossil records
2 in the Paleobiology Database4
Discovery
Adeopapposaurus was named and described by paleontologist Ricardo N. Martínez in 2009, based on fossils found at the Mogna locality in Argentina.14
Still debated
Scientists are still debating whether Adeopapposaurus is more closely related to Massospondylus or to other early sauropodomorphs.12

Where the facts come from

  1. Adeopapposaurus (en.wikipedia.org)
  2. JVP 29(1) chock full o' dinosaurs (Spoiler Alert) (dml.reptilis.net)
  3. ARTICLE ADEOPAPPOSAURUS MOGNAI, GEN. ET SP. NOV (studyres.com)
  4. Adeopapposaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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