| 词条 | Undorosaurus |
| 释义 |
| fossil_range = Late Jurassic,[1] {{Fossil range|150.8|145.5}} | image = Ундорозавр (Ихтиозавр (Ichthyopterygia)) Музей палеонтологии. Ундоры. Ульяновская обл. Ноябрь 2013 - panoramio.jpg | image_caption = Recosntructed skeleton | taxon = Undorosaurus | authority = Efimov, 1999 | subdivision_ranks = Species[1] | subdivision =
| synonyms =Ophthalmosaurus gorodischensis – Maisch & Matzke, 2000 }}Undorosaurus is an extinct genus of ophthalmosaurid ichthyosaur known from western Russia.[1][3][2] DescriptionUndorosaurus was first known from the holotype UPM EP-II-20 (527), a partial three-dimensionally preserved skeleton which preserved partial skull. It was collected near the Volga river at Gorodische from the Epivirgatites nikitini ammonoid zone, dating to the Late Jurassic.[3] A second species, U. trautscholdi was described by M.S. Arkhangelsky and N.G. Zverkov in 2014 from a partial left forefin found in the locality of Mnevniki, in the Moscow Oblast.[2]Maisch and Matzke (2000) regarded Undorosaurus to be a species of Ophthalmosaurus.[4] However, Storrs et al. 2000 rejected this synonymy based on the tooth morphology of the specimen.[5] Chris McGowan and Ryosuke Motani (2003) pointed out two noteworthy differences to Ophthalmosaurus, an incompletely fused ischiopubis and a remarkably strong dentition, and considered Undorosaurus to be a valid genus of ophthalmosaurid.[6] Undorosauruss validity is now accepted by most authors, even by Maisch (2010) who originally proposed the synonymy.[7][8][9] Zverkov & Efimov (in press) considered the genus Cryopterygius to be a junior synonym of the genus Undorosaurus. The authors considered the type species of the former genus, C. kristiansenae, to be synonymous with Undorosaurus gorodischensis; second species of Cryopterygius, C. kielanae, was tentatively maintained by the authors as a distinct species within the genus Undorosaurus.[10] EtymologyUndorosaurus was named by Vladimir M. Efimov in 1999 and the type species is Undorosaurus gorodischensis. The specific name is named after Gorodische, the type locality of this taxon.[3] U. trautscholdi is named in honor of the geologist H. Trautschold who collected and made the first description of the fossils of the holotype of the species.[2]See also{{portal|Paleontology}}
References1. ^1 2 {{cite web |url=http://fossilworks.org/?a=taxonInfo&taxon_no=173203 |title=†Undorosaurus Efimov 1999 |work=Paleobiology Database |publisher=Fossilworks |accessdate=5 January 2016}} {{Ichthyosauria|Parvipelvia}}{{Taxonbar|from=Q7884034}}2. ^1 2 3 {{cite journal |authors=M.S. Arkhangelsky and N.G. Zverkov |year=2014 |title=On a new ichthyosaur of the genus Undorosaurus |journal=Proceedings of the Zoological Institute of the Russian Academy of Sciences |volume=318 |issue=3 |pages=187–196 |url=http://www.zin.ru/journals/trudyzin/doc/vol_318_3/TZ_318_3_Arkhangelsky.pdf }} 3. ^1 2 3 {{cite journal |authors=Vladimir M. Efimov |year=1999 |title=A new family of Ichthyosaurs, the Undorosauridae fam. nov. from the Volgian stage of the European part of Russia |journal=Paleontological Journal |volume=33 |issue=2 |pages=174–181 }} 4. ^{{cite journal |author=Michael W. Maisch and Andreas T. Matzke |year=2000 |title=The Ichthyosauria |url=http://www.naturkundemuseum-bw.de/stuttgart/pdf/b_pdf/B298.pdf |journal=Stuttgarter Beiträge zur Naturkunde: Serie B |volume=298 |pages=1–159 }}{{Dead link|date=July 2018 |bot=InternetArchiveBot |fix-attempted=no }} 5. ^{{cite book |last=Storrs |first=Glenn W. |author2=Vladimir M. Efimov |author3=Maxim S. Arkhangelsky |year=2000 |chapter=Mesozoic marine reptiles of Russia and other former Soviet republics |title=The Age of Dinosaurs in Russia and Mongolia |editors=Benton, M.J.; Shishkin, M.A.; and Unwin, D.M. |publisher=Cambridge University Press |location=Cambridge |pages=140–159 |isbn=9780521545822}} 6. ^McGowan C, Motani R. 2003. Ichthyopterygia. – In: Sues, H.-D. (ed.): Handbook of Paleoherpetology, Part 8, Verlag Dr. Friedrich Pfeil, 175 pp., 101 figs., 19 plts; München 7. ^{{cite journal |authors=Michael W. Maisch |year=2010 |title=Phylogeny, systematics, and origin of the Ichthyosauria – the state of the art |url=http://www.palaeodiversity.org/pdf/03/Palaeodiversity_Bd3_Maisch.pdf |journal=Palaeodiversity |volume=3 |issue= |pages=151–214 }} 8. ^{{cite journal |last=Fischer |first=V. |author2=A. Clement |author3=M. Guiomar |author4=P. Godefroit |year=2011 |title=The first definite record of a Valanginian ichthyosaur and its implications on the evolution of post-Liassic Ichthyosauria |journal=Cretaceous Research |volume=32 |issue=2 |pages=155–163 |doi=10.1016/j.cretres.2010.11.005 |url=http://www.sciencedirect.com/science/article/pii/S0195667110001114 }} 9. ^{{cite journal |last=Fischer |first=V. |author2=Masure, E. |author3=Arkhangelsky, M.S. |author4= Godefroit, P. |year=2011 |title=A new Barremian (Early Cretaceous) ichthyosaur from western Russia |journal=Journal of Vertebrate Paleontology |volume=31 |issue=5 |pages=1010–1025 |doi=10.1080/02724634.2011.595464 |url=https://orbi.uliege.be/handle/2268/92828 }} 10. ^{{cite journal |author1=Nikolay G. Zverkov |author2=Vladimir M. Efimov |year=2019 |title=Revision of Undorosaurus, a mysterious Late Jurassic ichthyosaur of the Boreal Realm |journal=Journal of Systematic Palaeontology |volume=in press |issue= |pages= |doi=10.1080/14772019.2018.1515793 }} 3 : Extinct animals of Russia|Late Jurassic ichthyosaurs|Fossil taxa described in 1999 |
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