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GORGOSAURUS

a meat-eating albertosaurine theropod dinosaur from the Late Cretaceous of Canada.
gorgosaurus
Pronunciation: GOR-go-SOR-us
Meaning: Fierce lizard
Author/s: Lawrence Lambe (1914)
Synonyms: See below
First Discovery: Alberta, Canada
Chart Position: 84

Gorgosaurus libratus

(Balanced fierce lizard)Etymology
Gorgosaurus is derived from the Greek "gorgos" (fierce, terrible) and sauros" (lizard). Contrary to some sources, Gorgosaurus wasn't named after the "Gorgons" from Greek mythology, though they were pretty fierce themselves.
The species epithet, libratus, means "balanced" in Latin.
Synonyms
Deinodon horridus? (Cope, 1876)
Laelaps falculus? (Cope, (1876)
Laelaps hazenianus? (Cope, (1876)
Laelaps incrassatus (Cope, (1876)
Dryptosaurus kenabekides? (Hay, 1899)
Gorgosaurus sternbergi (Matthew & Brown, 1923)
Discovery
The first remains of Gorgosaurus were discovered in the Dinosaur Park Formation, "3½ miles below the mouth of Berry Creek" at Steveville, southside of the Red Deer River, Alberta, Canada, by Charles Mortram Sternberg during an expedition from the Geological Survey of Canada (led by his father Charles Hazelius Sternberg) in 1913.
The holotype (NMC 2120) is a nearly complete skeleton (the first tyrannosaurid specimen found with a complete hand) and an associated skull.
Habitat
The homeland of Gorgosaurus was a sub-tropical coastal plain along the western edge of an inland sea (the Western Interior Seaway, which cut North America in two on the vertical), with forests of huge conifers and tree ferns, many smaller ferns, and angiosperms. The up-rising Rockies unleashed great rivers resulting in vast floodplains, but periodic drought was still a problem. The area's fossil record shows massive mortality amongst herding dinosaurs, perhaps due to a lack of water, then cruelly too much of it, as the Bearpaw Sea expanded to drown the Dinosaur Park Fauna around 73 million years ago.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Campanian
Age range: 80-73 mya
Stats:
Est. max. length: 8.5 meters
Est. max. hip height: ?
Est. max. weight: 2.5 tons
Diet: Carnivore
References
• Lambe LM (1914) "On a new genus and species of carnivorous dinosaur from the Belly River Formation of Alberta, with a description of the skull of Stephanosaurus marginatus from the same horizon". Ottawa Naturalist. 28: 13–20.
• Lambe LM (1914) "On the fore-limb of a carnivorous dinosaur from the Belly River Formation of Alberta, and a new genus of Ceratopsia from the same horizon, with remarks on the integument of some Cretaceous herbivorous dinosaurs". Ottawa Naturalist. 27: 132.
• Holtz TR jr. (2004) "Tyrannosauroidea" in Weishampel, Dodson and Osmólska (eds.)
"The Dinosauria: Second Edition".
• Currie PJ, Trexler D, Koppelhus EB, Wicks K and Murphy N (2005) "An unusual multi-individual tyrannosaurid bonebed in the Two Medicine Formation (Late Cretaceous, Campanian) of Montana (USA)" in "The Carnivorous Dinosaurs".
• Braman DR and Koppelhus EB (2005) "Campanian palynomorphs" in Currie and Koppelhus (eds.) "Dinosaur Provincial Park: A Spectacular Ancient Ecosystem Revealed".
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To cite this page:
Atkinson, L. "GORGOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 20th Nov 2017.
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