Thecospondylus
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Thecospondylus Fossil range: Early Cretaceous |
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Thecospondylus (THEEK-o-SPON-di-lus Greek theke meaning 'sheath or socket' and spondylos meaning 'vertebra') is a dubious genus of dinosaur named after the "extremely thin" bone forming the vertebrae, as indicated by a cast of the neural canal of the sacral region (the only known fossil that can be definitely assigned to this genus). The genus was described by Harry Seeley in 1882, with T. horneri as type species. A second species, T. daviesi, was added by Seeley in 1888, but later given its own genus, Thecocoelurus.
Based on such meagre material, T. horneri has been variably classified as ornithischian or saurischian. Whatever this animal was, it lived in Europe during the Early Cretaceous Period. The specimen was found in Hastings, England.