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AZENDOHSAURUS

an archosauromorph (initially thought to be a dinosaur) from the Late Triassic of Morocco.
image
Pronunciation: ah-ZEN-do-SOR-us
Meaning: Azendoh lizard
Author/s: J. M. Dutuit (1972)
Synonyms: None known
First Discovery: Marrakesh, Morocco
Chart Position:

Azendohsaurus laaroussi

Initially pencilled-in as an ornithischian by Dutuit in 1972, subsequent study of its only remains — a partial jaw with a couple of leaf-shaped teeth — led Thulborn to conclude that Azendohsaurus was a relative of "the Bristol Thecodontosaurus" and not only one of the oldest known prosauropods but also one of the oldest known dinosaurs of any stamp.

Galton and Weishampel did some probing of their own in 1990 and came to the conclusion that its remains were a mixture of ornithiscian and saurischian, but John J. Flynn's 2010 announcement of Azendohsaurus madagaskarensis — a second species from Madagascar — threw its classification into complete chaos once again.

Originally discovered in the Argana formation not too far from the famous Moroccan city of Marrakesh, Azendohsaurus is now regarded as an archosauromorph whose herbivorous dinosaurian features evolved independently of herbivorous dinosaurs.
Etymology
Azendohsaurus is derived from "Azendoh" (the village in Morocco's Atlas Mountains where it was discovered) and the Greek "sauros" (lizard).
Discovery
The first fossils of the Azendoh lizard were recovered from the Argana Formation, 1.5km east of Azendoh, "Argana corridor", Morocco.
The Holotype (MTDXVI-1, housed at the Museum National d'Histoire Naturelle, Paris) is a fragment of mandible (lower jaw) and a couple of teeth.
Estimations
Timeline:
Era: Mesozoic
Epoch: Triassic
Stage: Carnian
Age range: 237-228 mya
Stats:
Est. max. length: 2 meters
Est. max. hip height: ?
Est. max. weight: 55 Kg
Diet: Herbivore
Family Tree:
Animalia
Chordata
Reptilia
Diapsida
Archosauromorpha
Azendohsaurus
laaroussi
References
• J.J. Flynn, S.J. Nesbitt, J.M. Parrish, L. Ranivoharimanana and A.R. Wyss (2010) "A new species of Azendohsaurus (Diapsida: Archosauromorpha) from the Triassic Isalo Group of southwestern Madagascar: cranium and mandible". Palaeontology, Volume 53, Issue 3, Pages 669–688.
• Irmis, R.B.; Parker, W.G.; Nesbitt, S.J.; and Liu, J. (2007) "Early ornithischian dinosaurs: the Triassic record". Historical Biology: An International Journal of Paleobiology, Volume 19, Issue 1.
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To cite this page:
Atkinson, L. "AZENDOHSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 25th Mar 2017.
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