The genus was named in 2007 by Wang Xiaolin, Alexander Kellner, Zhou Zhonge and Diogenes de Almeida Campos. The type species is Gegepterus changi. The generic name is derived from Manchuge ge, the title of a princess, in reference to the dainty gracility of the specimen, and a Latinized Greek pteron, "wing". The specific name honors female paleontologist Chang Meemann, who over the years established a cordial relationship between the Chinese and Brazilian authors.[1] In 2008 Wang emended the epithet to changae,[2] but such changes are no longer allowed by the ICZN.
It is known from two specimens. The first is holotypeIVPP V 11981, which was in 2001 found in grey shales from the lower part of the formation (estimated at 125 million years old), near the city of Beipiao. It consists of a crushed and damaged partial skeleton of a subadult including skull, lower jaws, cervical and sacral vertebrae, ribs, gastralia ("belly ribs"), shoulder girdle and hindlimb remains, along with dark soft tissue remains near the skull and gastralia and in the orbit; unfortunately, the soft tissue remains show no structure except for some small, unbranched fibers at the back of the head. The jaws are very elongated; the snout is flat and concave on top, with a low and thin crest. The forehead slightly projects to the front. The cervicals are elongated.[1]
In 2011, a second, smaller specimen was described, IVPP V 11972, which increased the known skeletal elements and showed a more extensive covering of hair-like structures.[3]
Classificationedit
The authors assigned Gegepterus to the Ctenochasmatidae, on the basis of its long rostrum and numerous needle-like teeth, about 150 in total. This is the first uncontroversial report of the Ctenochasmatidae from the Yixian Formation, as the fossils of other assumed ctenochasmatids have not preserved the dentition. It was at first suspected to be the juvenile of some known species.[1]
Below is cladogram following a topology by Andres, Clark and Xu (2014). In the analysis, they recovered Gegepterus within the family Ctenochasmatidae, more precisely within the tribe Pterodaustrini, sister taxon to Beipiaopterus.[4]
^ abcWang, X., Kellner, A.W.A., Zhou, Z., and Campos, D.A. (2007). "A new pterosaur (Ctenochasmatidae, Archaeopterodactyloidea) from the Lower Cretaceous Yixian Formation of China." Cretaceous Research, 28(2): 2245-260. doi:10.1016/j.cretres.2006.08.004
^Wang X., 2008, "Order Pterosauria" In: Li J., Wu X., Zhnag F. eds. Chinese Fossil Reptiles and their Kin 2nd edition, Science Press, Beijing p. 215-234
^Andres, B.; Clark, J.; Xu, X. (2014). "The Earliest Pterodactyloid and the Origin of the Group". Current Biology. 24 (9): 1011–6. doi:10.1016/j.cub.2014.03.030. PMID 24768054.
gegepterus, genus, ctenochasmatid, pterosaur, from, early, cretaceous, period, what, yixian, formation, liaoning, china, only, species, known, changi, temporal, range, early, cretaceous, preꞒ, scientific, classificationdomain, eukaryotakingdom, animaliaphylum,. Gegepterus is a genus of ctenochasmatid pterosaur from the Early Cretaceous period of what is now the Yixian Formation of Liaoning China Only one species is known G changi GegepterusTemporal range Early Cretaceous 124 6 Ma PreꞒ Ꞓ O S D C P T J K Pg N Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataOrder PterosauriaSuborder PterodactyloideaFamily CtenochasmatidaeTribe PterodaustriniGenus GegepterusWang et al 2007Type species Gegepterus changiWang et al 2007 Contents 1 History and etymology 2 Classification 3 See also 4 ReferencesHistory and etymology editThe genus was named in 2007 by Wang Xiaolin Alexander Kellner Zhou Zhonge and Diogenes de Almeida Campos The type species is Gegepterus changi The generic name is derived from Manchu ge ge the title of a princess in reference to the dainty gracility of the specimen and a Latinized Greek pteron wing The specific name honors female paleontologist Chang Meemann who over the years established a cordial relationship between the Chinese and Brazilian authors 1 In 2008 Wang emended the epithet to changae 2 but such changes are no longer allowed by the ICZN It is known from two specimens The first is holotype IVPP V 11981 which was in 2001 found in grey shales from the lower part of the formation estimated at 125 million years old near the city of Beipiao It consists of a crushed and damaged partial skeleton of a subadult including skull lower jaws cervical and sacral vertebrae ribs gastralia belly ribs shoulder girdle and hindlimb remains along with dark soft tissue remains near the skull and gastralia and in the orbit unfortunately the soft tissue remains show no structure except for some small unbranched fibers at the back of the head The jaws are very elongated the snout is flat and concave on top with a low and thin crest The forehead slightly projects to the front The cervicals are elongated 1 In 2011 a second smaller specimen was described IVPP V 11972 which increased the known skeletal elements and showed a more extensive covering of hair like structures 3 Classification editThe authors assigned Gegepterus to the Ctenochasmatidae on the basis of its long rostrum and numerous needle like teeth about 150 in total This is the first uncontroversial report of the Ctenochasmatidae from the Yixian Formation as the fossils of other assumed ctenochasmatids have not preserved the dentition It was at first suspected to be the juvenile of some known species 1 Below is cladogram following a topology by Andres Clark and Xu 2014 In the analysis they recovered Gegepterus within the family Ctenochasmatidae more precisely within the tribe Pterodaustrini sister taxon to Beipiaopterus 4 Ctenochasmatidae Ctenochasmatinae Ctenochasma Pterodaustrini Pterodaustro guinazuiEosipterus yangiBeipiaopterus chenianusGegepterus changiKepodactylus insperatusElanodactylus prolatus Moganopterinae Feilongus youngiMoganopterus zhuiana Gnathosaurinae Huanhepterus quingyangensisPlataleorhynchus streptophorodonGnathosaurus subulatusGnathosaurus macrurusSee also editList of pterosaur genera Timeline of pterosaur researchReferences edit a b c Wang X Kellner A W A Zhou Z and Campos D A 2007 A new pterosaur Ctenochasmatidae Archaeopterodactyloidea from the Lower Cretaceous Yixian Formation of China Cretaceous Research 28 2 2245 260 doi 10 1016 j cretres 2006 08 004 Wang X 2008 Order Pterosauria In Li J Wu X Zhnag F eds Chinese Fossil Reptiles and their Kin 2nd edition Science Press Beijing p 215 234 Jiang Shun Xing amp Wang Xiao Lin 2011 Important features of Gegepterus changae Pterosauria Archaeopterodactyloidea Ctenochasmatidae from a new specimen Vertebrata PalAsiatica 49 2 172 184 http www ivpp cas cn cbw gjzdwxb xbwzxz 201105 P020110530510419201105 pdf Andres B Clark J Xu X 2014 The Earliest Pterodactyloid and the Origin of the Group Current Biology 24 9 1011 6 doi 10 1016 j cub 2014 03 030 PMID 24768054 Portals nbsp Paleontology nbsp Cretaceous nbsp China Retrieved from https en wikipedia org w index php title Gegepterus amp oldid 1015817692, wikipedia, wiki, book, books, library,
