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METRIACANTHOSAURUS

a meat-eating metriacanthosaurid (sinraptorid) theropod dinosaur from the Late Jurassic of England.
Pronunciation: met-ree-a-KAN-tho-SOR-us
Meaning: Moderately-spined lizard
Author/s: von Huene (1923)
Synonyms: See below
First Discovery: Weymouth, England
Chart Position: 105

Metriacanthosaurus parkeri

In 1923 German Paleontologist Friedrich von Huene wrote a paper on European carnivorous dinosaurs and surprised absolutely no-one when he examined an incomplete hip, a leg bone, and part of a backbone, and announced a new species of MegalosaurusMegalosaurus parkeri. He did this a lot. What he also did a lot was reexamine his previously coined dinosaurs and assign them new names, and in 1932 Megalosaurus parkeri became Altispinax parkeri, even though the typical Altispinax "high spines" were notable by their absence. In the 1960s Alick Walker realised these fossils were nothing like Megalosaurus or Altispinax (whose name prompting "high spines" have since been renamed Becklespinax) and raised an all new genus—Metriacanthosaurus, "moderately-spined lizard"—named for its taller-than-typically short carnosaur spines but shorter than typically high spinosaurid spines.
(Parker's Moderate-Spined Lizard)Etymology
Metriacanthosaurus is derived from the Greek "metrikos" (moderate), "akantha" (spine) and "sauros" (lizard) because of the medium length spines on its backbone.
The species epithet, parkeri, honors W. Parker.
Discovery
The remains of Metriacanthosaurus were discovered in the upper Oxford Clay Formation at Jordan's Cliff, Overcombe, Nr. Weymouth, Dorset, England, by W. Parker sometime in the 19th century. The holotype (OUM J.12144) consists of an incomplete hip, a leg bone, and part vertebrae from the back and tail.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Jurassic
Stage: Oxfordian
Age range: 161-156 mya
Stats:
Est. max. length: 8 meters
Est. max. hip height: ?
Est. max. weight: 2 tons
Diet: Carnivore
Synonyms
Megalosaurus parkeri (von Huene, 1923).
Altispinax parkeri (von Huene, 1923).
References
• von Huene F (1923) "Carnivorous Saurischia in Europe since the Triassic". Bulletin of the Geological Society of America 34: 449–458.
• von Huene F (1932) "Die fossile Reptil-Ordnung Saurischia, ihre Entwicklung und Geschichte". Monographien zur Geologie und Palaeontologie 1 (4): 361.
• Walker AD (1964) "Triassic reptiles from the Elgin area: Ornithosuchus and the origin of carnosaurs".
• Paul GS (1990) "Predatory Dinosaurs of the World".
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To cite this page:
Atkinson, L. "METRIACANTHOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 26th Mar 2017.
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