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Amphibians and Reptiles Low‑importance

	Aegirosaurus is part of WikiProject Amphibians and Reptiles, an effort to make Wikipedia a standardized, informative, comprehensive and easy-to-use resource for amphibians and reptiles. If you would like to participate, you can choose to edit this article, or visit the project page for more information.Amphibians and ReptilesWikipedia:WikiProject Amphibians and ReptilesTemplate:WikiProject Amphibians and Reptilesamphibian and reptile articles
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Palaeontology Low‑importance

	Paleontology portal This article is within the scope of WikiProject Palaeontology, a collaborative effort to improve the coverage of palaeontology-related topics and create a standardized, informative, comprehensive and easy-to-use resource on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PalaeontologyWikipedia:WikiProject PalaeontologyTemplate:WikiProject PalaeontologyPalaeontology articles
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Macropterygius

The type species of Macropterygius von Huene 1922 is Ichthyosaurus trigonus Owen 1840 (specified by von Huene, 1923), and the holotype of I. trigonus is ANSP 10124 (Spamer et. al. 1989). The holotype of I. trigonus was mistakenly thought to be lost and vertebrae figured by Phillips (1871) were designated the neotype by Lydekker (1889), (Spamer et. al. 1989). However, the rediscovery of the holotype prompted the ICZN to revoke Lydekker's (1889) neotype designation (Spamer 1991; ICZN 1993).

Spamer, E. E. (1991). "Case 2779., Ichthyosaurus trigonus Owen, 1840 (currently Macropterygius trigonus; Reptilia, Ichthyopterygia): Proposed replacement of neotype by rediscovered holotype." Bulletin of Zoological Nomenclature 48: ., 240-242.

Int Comm Zool, N. (1993). "Ichthyosaurus-Trigonus Owen 1840 Currently Macropterygius-Trigonus Reptilia Ichthyopterygia Neotype Replaced by Rediscovered Holotype." Bulletin of Zoological Nomenclature 50(2): 184-185.

Lydekker, R. 1889. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural History). Part 2. (Ichthyopterygia and Sauropterygia). 307 pp. British Museum (Natural History), London.

Phillips, J. 1871 . Geology of Oxford and the Valley of the Thames, xxiv, 523 pp. Clarendon Press, Oxford.

Owen, R. (1840) Report on British fossil reptiles. Report of the 9th Meeting of the British Association for the Advancement of Science, 1839, 8: 43-126.

Spamer, E.E., Bogan, A.E. & Torrens, H.S. 1989. Recovery of the Etheldred Benett collection offossils mostly from Jurassic-Cretaceous strata of Wiltshire, England, analysis of the taxonomic nomenclature of Benett (1831), and notes and figures of type specimens contained in the collection. Proceedings of the Academy of Natural Sciences of Philadelphia, 141:115-180.

Huene, F. von. 1922. Die Ichthyosaurier des Lias und ihre Zusammenhange. Monographien zur Geologic and Palaeontologie, 1: 1-114. Huene, F. von. 1923. Lines of phyletic and biological development of the Ichthyopterygia. Bulletin of the Geological Society of America, 34: 463^68. 68.4.61.168 (talk) 23:10, 17 April 2012 (UTC)Vahe Demirjian[reply]