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Meroktenos

Say it: meh-ROK-teh-nos
Name means: “thigh beast”1
Ate: PlantsLong-necksLate Triassic

Meroktenos was a long-necked plant-eater that lived in what is now Lesotho during the Late Triassic. It walked on four sturdy legs and had a very thick thighbone for its size.14

Lived
227 to 201 million years ago4
Late Triassic
Fossils found in
Thabana Morena, Lesotho14
Length
4 m (13 ft)1
estimated from femur length
Weight
300 kg (661 lb)3
largest known specimen
Height
1.2 m (3.9 ft)
estimate
Top speed
about 37 km/h (23 mph)
Running, estimate
What did Meroktenos eat?
It was a plant-eater. It ate plants like ferns and cycads.

When did it live?

Triassic
Jurassic
Cretaceous
252 million years ago20114566, the asteroid

How big was it?

How long was it?

Meroktenos about 4 m long (13 ft)A bicycle about 1.8 m (5.9 ft)A car about 4.5 m (15 ft)An elephant, the biggest land animal today about 6.5 m (21 ft)

How tall was it?

A house catabout 0.3 m (1 ft)A dogabout 0.5 m (1.6 ft)Meroktenosabout 1.2 m tall (3.9 ft)A horseabout 1.6 m (5.2 ft)

estimate

How heavy was it?

as heavy as 15 dogs
as long as 4 dogs nose to tailas long as 22 bananas end to endas heavy as 60 watermelonsas heavy as 16 kindergarten kidsas heavy as 9 school kidscould run 100 metres in 9.7 seconds (the fastest human needs 9.6)

How big was Meroktenos compared to YOU?

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How fast was it?

cool stuff

Fun facts

1

Meroktenos had a very wide and thick thighbone, a shape that was previously only seen in giant sauropods. Scientists think this helped support its heavy body.1

2

The name Meroktenos comes from Greek words meaning 'thigh' and 'beast', because its thighbone is so unusual.1

3

Meroktenos lived about 216 to 201 million years ago, during the Late Triassic period.14

4

The first fossils of Meroktenos were found in 1959 by a team of geologists and paleontologists near the village of Thabana Morena in Lesotho.1

5

Meroktenos was originally thought to be a species of Melanorosaurus, but in 2016 scientists gave it its own genus.12

6

The thighbone of Meroktenos is about 48 centimeters long, which suggests the whole animal was around 4 meters in length.1

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

?How big was Meroktenos?

About 4 metres (13 feet) long. Its thighbone is about 48 centimetres long.1

?What did Meroktenos eat?

It was a plant-eater. It ate plants like ferns and cycads.1

?When did Meroktenos live?

It lived during the Late Triassic period, about 216 to 201 million years ago.1

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For dino experts

Scientific name
Meroktenos
Named by
Peyre de Fabrègues and Allain 20164
Group
Long-necks
Family / clade
Sauropodiformes4
Classification
Sauropodomorpha4
Age of the rocks
227 to 201 million years (Norian / Rhaetian)4
Rock formations
Elliot4
Countries
Lesotho4
Fossil records
1 in the Paleobiology Database4
Discovery
In 1959, François Ellenberger, Paul Ellenberger, Jean Fabre and Leonard Ginsburg discovered the first fossils near Thabana Morena, Lesotho. In 1993, François-Xavier Gauffre named it Melanorosaurus thabanensis, but in 2016 Claire Peyre de Fabrègues and Ronan Allain gave it its own genus, Meroktenos.12
Still debated
Scientists are not sure why Meroktenos had such a wide thighbone. It was not a giant dinosaur, so the thick bone may have had a different purpose.1

Where the facts come from

  1. Meroktenos (en.wikipedia.org)
  2. New material and revision of Melanorosaurus thabanensis , a basal sauropodomorph from the Upper Triassic of Lesotho (pmc.ncbi.nlm.nih.gov)
  3. Meroktenos thabanensis | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
  4. Meroktenos in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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