|
''Camposipterus'' is a genus of pterodactyloid pterosaur from the Cretaceous of England. ==Discovery and naming== In 1869, Harry Govier Seeley, based on a fossil found at Haslingfield, Cambridgeshire, named ''Ptenodactylus nasutus'',〔Seeley, H.G., 1869, ''Index to the fossil remains of Aves, Ornithosauria, and Reptilia, from the Secondary System of Strata arranged in the Woodwardian Museum of the University of Cambridge''. Deighton, Bell and Co., Cambridge, xxiii + 143 pp〕 at the same time disclaiming the name which makes it invalid by modern standards. In 1870, Seeley had realised that the generic name ''Ptenodactylus'' had been preoccupied and renamed the species into ''Ornithocheirus nasutus''.〔Seeley, H.G., 1870, ''The Ornithosauria: an elementary study of the bones of pterodactyls, made from fossil remains found in the Cambridge Upper Greensand, and arranged in the Woodwardian Museum of the University of Cambridge''. Deighton, Bell, and Co., Cambridge, xii + 135 pp〕 The specific name means "with a long nose" in Latin. In 2001 David Unwin made this species a junior subjective synonym of ''Anhanguera fittoni''.〔Unwin, D.M., 2001, "An overview of the pterosaur assemblage from the Cambridge Greensand (Cretaceous) of Eastern England", ''Mitteilungen aus dem Museum für Naturkunde in Berlin, Geowissenschaftliche Reihe'' 4: 189–221〕 However, in 2013 Taissa Rodrigues and Alexander Wilhelm Armin Kellner concluded firstly that ''Pterodactylus fittoni'' Owen 1859 was not a part of the genus ''Anhanguera'' and secondly that ''Ornithocheirus nasutus'' was not identical to it regardless. They decided to name a separate genus for the species: ''Camposipterus''.〔Earlier the name "Camposia" had been considered, still appearing in some diagrams of the naming article, but this was preoccupied by the grasshopper ''Camposia'' Bolívar 1909〕 The generic name combines that of the Brazilian paleontologist Diogenes de Almeida Campos with a Latinised Greek πτερόν, pteron, "wing". The resulting new combination name, the ''combinatio nova'', is ''Camposipterus nasutus'', the type species remains ''Ornithocheirus nasutus''.〔 The holotype, CAMSM B 54556, had been found in a layer of the Cambridge Greensand dating from the Cenomanian but probably containing reworked fossils from the older Albian. It consists of the front part of a snout.〔 Rodrigues & Kellner in 2013 moved two more species to the genus. They renamed ''Pterodactylus sedgwickii'' Owen 1859 into ''Camposipterus''(?) ''sedgwickii'' and ''Ornithocheirus colorhinus'' Seeley 1870 into ''Camposipterus''(?) ''colorhinus''. The question marks indicate the uncertainty of the authors about the correctness of the move.〔 ''Pterodactylus sedgwickii'' had in 1859 been named by Richard Owen based on specimen CAMSM B54422, the front part of a snout from the Cambridge Greensand. Its specific name honours Adam Sedgwick.〔Owen, R., 1859, ''Monograph on the fossil Reptilia of the Cretaceous formations. Supplement no. I''. Palaeontographical Society, London, 19 pp〕 It was in 1869 renamed by Seeley into a ''Ptenodactylus sedgwickii''〔 and in 1870 into a ''Ornithocheirus sedgwickii''.〔 In 1874, Owen again renamed it into ''Coloborhynchus sedgwickii''.〔Owen, R., 1874, ''Monograph on the fossil Reptilia of the Mesozoic Formations''. Palaeontographical Society, London, 14 pp〕 Owen in 1859 also referred a front of the lower jaws, specimen CAMSM B54421. However, this piece is not of the same individual as the holotype and there is no proof for any connection with ''Pterodactylus sedgwickii''.〔 In 1869, Seeley also named a ''Ptenodactylus colorhinus'',〔 in 1870 a ''Ornithocheirus colorhinus'' based on the syntypes CAMSM B54431 and CAMSM B54432, both front snouts from the Cambridge Greensand. Its specific name means "with a docked nose" from the Greek κόλος, ''kolos'', "docked", and ῥίς. ''rhis'', "nose".〔 In 2001, Unwin considered this species to be a junior synonym of ''Anhanguera cuvieri''.〔 However, this was not accepted by Rodrigues & Kellner, who, rejecting any identity between the Brazilian and English pterosaur material, named a separate ''Cimoliopterus cuvieri''.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Camposipterus」の詳細全文を読む スポンサード リンク
|