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Categories: OrnithopodaHerbivoreAustraliaEumerallaEarly Cretaceous

ATLASCOPCOSAURUS

Pronunciation: AT-las-KOP-ko-SOR-us
Meaning: Atlas Copco lizard
Authors: Rich and Rich (1989)
Previous names: None known
First discovery: Victoria, Australia
Roar factor: 2/10

Atlascopcosaurus loadsi

Unearthed at Dinosaur-Cove in Victoria in 1984, Atlascopcosaurus was assigned to "Hypsilophodontidae" by husband and wife team Tim and Patricia Vickers-Rich five years later solely on the strength of ridges on its cheek teeth.

However, non-hypsilophodonts such as Zalmoxes, Camptosaurus, Dryosaurus, Gasparinisaura and Talenkauen all have ridged cheek teeth and "Hypsilophodontidae" has since collapsed 'cause Hypsilophodon is the only true member and there's no point anchoring a family if you have no family to anchor.

In their reappraisal of Australian dinosaurs in 2010, Agnolina, Ezcurra, Pais and Salisbury recovered Atlascopcosaurus as a basal ornithopod, perhaps closely related to Gasparinisaura and Anabisetia, though its meagre remains continue to put the kibosh on a more concrete classification.
(Loads' Atlas Copco lizard) Etymology
Atlascopcosaurus is derived from "Atlas Copco" (for Atlas Copco, the company who supplied drilling equipment for the expedition) and the Greek "sauros" (lizard).
The species epithet, loadsi, honors the Atlas Copco regional company manager William Loads, who also assisted with the dig. Loadsa honor for the loadsi lizard.
Discovery
The remains of Atlascopcosaurus were discovered in the Eumeralla Formation, Otway Group, Dinosaur Cove, Victoria, Australia, in 1984. The holotype (NMV P166409) is a piece of left-upper jaw bone (maxilla) and four cheek teeth.
Estimations
Timeline:
Era: Mesozoic
Period: Early Cretaceous
Timespan: 118-110 million years ago
Age: Aptian
Vital Stats:
Est. Max. Length: 2 meters
Est. Max. Height: ?
Est. Max. Weight: 25 kg
Diet: Herbivorous
Family Tree:
Dinosauria
Ornithischia
Cerapoda
Ornithopoda
Atlascopcosaurus
loadsi
References
• T. Rich and P. Vickers-Rich (1988) "Polar dinosaurs and biotas of the Early Cretaceous of southeastern Australia."
• Federico L. Agnolin, Martín D. Ezcurra, Diego F. Pais and Steven W. Salisbury (2010) "A reappraisal of the Cretaceous non-avian dinosaur faunas from Australia and New Zealand: evidence for their Gondwanan affinities."
• D. E. Fastovsky, D. B. Weishampel and J. Sibbick (2005) "The Evolution and Extinction of the Dinosaurs". /uk
                    
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To cite this page:
Lee Atkinson (DinoChecker) "ATLASCOPCOSAURUS: from DinoChecker's dinosaur archive".
http://www.dinochecker.com/dinosaurs/ATLASCOPCOSAURUS. Web access: 01st Nov 2014.