Trisha Shetty (Editor)

Atlasaurus

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Kingdom  Animalia
Clade  Dinosauria
Phylum  Chordata
Order  Saurischia
Class  Reptilia
Suborder  â€ Sauropodomorpha
Rank  Species
Atlasaurus Atlasaurus
Genus  â€ Atlasaurus Monbaron, Russell, & Taquet, 1999
Similar  Brachytrachelopan, Antetonitrus, Tazoudasaurus, Animantarx, Anoplosaurus

Atlasaurus


Atlasaurus is a genus of sauropod dinosaur from Middle Jurassic (Bathonian to Callovian stages) beds in North Africa.

Contents

Description

Atlasaurus atlasaurus DeviantArt

Atlasaurus differs from Brachiosaurus relative to the estimated length of the dorsal vertebral column (assuming 12 vertebrae, 3.04 m), in having a proportionately larger skull, a shorter neck (with at least 13 cervical vertebrae, shorter and more uniform in length than Brachiosaurus), a longer tail and more elongated limbs (humerus to femur ratio: 0.99; ulna to tibia ratio: 1.15). The teeth are spoon-shaped and have denticles. The lower jaw of Atlasaurus is about 69 centimetres (27 in) long, the neck was about 3.86 metres (12.7 ft) long, the humerus 1.95 metres (6 ft 5 in) long, and the femur about 2 metres (6 ft 7 in) long. It has been estimated at 15 metres (49 ft) in length, and 22.5 tonnes (22.1 long tons; 24.8 short tons) in weight.

Discovery and naming

Atlasaurus Atlasaurus Pictures amp Facts The Dinosaur Database

Atlasaurus was discovered by Monbaron, Russell & Taquet in 1999. It was named after the location of discovery in the High Atlas range of the Atlas Mountains of Morocco (where the Titan Atlas was said to hold up the heavens), and for the animal's size (about 15 m (50 ft) long). It is known from a nearly complete skeleton with a skull found at Wawmda, in the Middle Jurassic (Bathonian-Callovian) Tiougguit Formation in Morocco's Azilal Province. The type species is Atlasaurus imelakei, the specific name coming from Arabic Imelake, the name of a giant.

Classification

Atlasaurus atlasaurus DeviantArt

A relatively primitive sauropod identified as a "cetiosaur" when first discovered in 1981, Atlasaurus appears to be closer to Brachiosaurus than to any other known sauropod based on detailed similarities between the vertebral column and limbs. However, more recent analyses have considered it to be a putative member of the Turiasauria.

Atlasaurus www3dvfcomforumstaticmesimages49317atlasaur
Atlasaurus Atlasaurus imelakei skeletal by PaleoKing on DeviantArt
Atlasaurus Sauropods Macronaria General Fossil Discussion The Fossil Forum

References

Atlasaurus Wikipedia


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