| 词条 | Hypselospinus |
| 释义 |
| fossil_range = Early Cretaceous, {{fossilrange|140}} | image = Hypselospinus NT.jpg | image_caption = Restoration | display_parents = 3 | genus = Hypselospinus | parent_authority = Norman, 2010 | species = fittoni | authority = (Lydekker, 1889 [originally Iguanodon fittoni]) | synonyms =
}}Hypselospinus is a genus of iguanodontian dinosaur which was first described as a species of Iguanodon (I. fittoni) by Richard Lydekker in 1889, the specific name honouring William Henry Fitton.[1] In May 2010 the fossils comprising Hypselospinus were by David Norman reclassified as a separate genus, among them the holotype BMNH R1635, consisting of a left ilium, a sacrum, tail vertebrae and teeth. The generic name is derived from Greek hypselos, "high" and Latin spina, "thorn", in reference to the high vertebral spines. Later that same year, a second group of scientists independently re-classified I. fittoni into a new genus they named Wadhurstia,[2] which thus is a junior objective synonym of Hypselospinus. Hypselospinus lived during the lower Valanginian stage, around 140 million years ago.[2][3] A contemporary of Barilium (also once thought to be a species of Iguanodon), Hypselospinus was a lightly built iguanodontian estimated at 6 metres (19.7 ft) long.[4] The species Iguanodon fittoni was described from the lower Valanginian-age Lower Cretaceous Wadhurst Clay[2] of East Sussex, England.[5] Remains from Spain may also pertain to it. Norman (2004) wrote that three partial skeletons are known for it,[5] but this is an error.[6] Hypselospinus is separated from Barilium on the basis of vertebral and pelvic characters, size, and build.[4] For example, Barilium was more robust than Hypselospinus, with large Camptosaurus-like vertebrae featuring short neural spines, whereas Hypselospinus is known for its "long, narrow, and steeply inclined neural spines".[5]References1. ^{{cite journal |last=Lydekker |first=Richard|year=1889|title=On the remains and affinities of five genera of Mesozoic reptiles |journal=Quarterly Journal of the Geological Society of London |volume=45 |pages=41–59 |doi=10.1144/GSL.JGS.1889.045.01-04.04}} {{Portalbar|Dinosaurs|Cretaceous|England|Prehistory of Europe}}{{Ornithopoda|O.}}{{Taxonbar|from=Q1706548}}2. ^1 2 Carpenter, K. and Ishida, Y. (2010). "Early and “Middle” Cretaceous Iguanodonts in Time and Space.{{dead link|date=July 2016 |bot=InternetArchiveBot |fix-attempted=yes }}" Journal of Iberian Geology, 36 (2): 145-164. 3. ^{{Cite journal | author = Norman, David B. | year = 2010 | title = A taxonomy of iguanodontians (Dinosauria: Ornithopoda) from the lower Wealden Group (Cretaceous: Valanginian) of southern England | url = http://mapress.com/zootaxa/2010/f/z02489p066f.pdf | journal = Zootaxa | volume = 2489 | issue = | pages = 47–66 }} 4. ^1 {{cite book |last=Blows |first=W. T. |chapter=A review of Lower and middle Cretaceous dinosaurs from England|editor=Lucas, S.G. |editor2=Kirkland, J.I. |editor3=Estep J.W. (eds.) |title=Lower and Middle Cretaceous Terrestrial Ecosystems |year=1997|series=New Mexico Museum of Natural History and Science Bulletin, 14 |publisher=New Mexico Museum of Natural History and Science |pages=29–38}} 5. ^1 2 {{cite book |last= Norman|first=David B. |editor= Weishampel, D.B. |editor2=Dodson, P. |editor3=Osmólska H. (eds.)|title=The Dinosauria |edition=2nd |year= 2004|publisher=University of California Press |location=Berkeley |isbn=0-520-24209-2 |pages=413–437 |chapter=Basal Iguanodontia}} 6. ^{{cite journal |last=Naish |first=Darren |author2=Martill, David M. |year=2008 |title=Dinosaurs of Great Britain and the role of the Geological Society of London in their discovery: Ornithischia |journal=Journal of the Geological Society, London |volume=165 |pages=613–623 |doi=10.1144/0016-76492007-154 |issue=3}} 5 : Early Cretaceous dinosaurs of Europe|Iguanodonts|Fossil taxa described in 2010|Taxa named by David B. Norman|Paleontology in England |
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