Gigantosaurus
Extinct genus of dinosaurs From Wikipedia, the free encyclopedia
Extinct genus of dinosaurs From Wikipedia, the free encyclopedia
Gigantosaurus (from Ancient Greek γίγας (gígas) 'giant' and σαυρος (sauros) 'lizard') is a dubious genus of sauropod dinosaur from the Late Jurassic Kimmeridge Clay Formation of England.[1] The type species, Gigantosaurus megalonyx, was named and described by Harry Govier Seeley in 1869.[2]
Gigantosaurus Temporal range: | |
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Part of the syntype series of G. megalonyx (from left to right: CAMSM J.29477, CAMSM J.29478, CAMSM J.29479 and CAMSM J.29483) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | †Sauropodomorpha |
Clade: | †Sauropoda |
Genus: | †Gigantosaurus Seeley, 1869 |
Species: | †G. megalonyx |
Binomial name | |
†Gigantosaurus megalonyx Seeley, 1869 | |
Its syntype series consists of several separately discovered sauropod bones found in Cambridgeshire in 1862, including two caudal (tail) vertebrae (CAMSM J.29477 and CAMSM J.29478), the distal end of a tibia (CAMSM J.29483), a cast of the right radius (CAMSM J.29482), a cast of phalanx (CAMSM J.29479) and an osteoderm (CAMSM J.29481).[3]
It was synonymised to Ornithopsis humerocristatus by Richard Lydekker in 1888[4] and to Pelorosaurus by Friedrich von Huene in 1909.[5] Today it is considered a nomen dubium.
Because of these references Eberhard Fraas incorrectly assumed in 1908, the name was available for other species and he used it, despite it being preoccupied, for African material totally unrelated to the British finds.[6] As a result, the name Gigantosaurus factored into the convoluted taxonomic history of the dinosaurs Barosaurus, Tornieria, and Janenschia. A discussion of this can be found in the main Tornieria article.
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