The genus was named in 2006 by Wang Li, Li Li, Duan Ye and Cheng Shao-li. The genus name is derived from the old name of Chaoyang City, Longcheng, and a Latinized Greek pteron, "wing". The specific name honors Zhao Dayu, the president of Shenyang Normal University and a contributor to the founding of the Western Liaoning Institute of Mesozoic Paleontology.
Descriptionedit
Longchengpterus is based on holotypeLPM 00023, found at Yuanjiawa near Dapingfanga, a compressed incomplete skeleton and partial skull on a single plate. The posterior part of the skull has been damaged. It is elongated with a length of 262 millimeters (10.3 in). The large skull opening, the fenestra nasantorbitalis, is triangular in form and occupies much of the snout. The teeth in the upper jaw are concentrated in the front part and spaced far apart; their number is uncertain. The lower jaws have been well preserved. They are 220 millimeters (8.7 in) long and their symphysis is short. Twelve teeth are present in the dentary. They have a sharp point but are laterally compressed, curving slightly inwards.
The humerus, 88 millimeters (3.5 in) long, has a low deltopectoral crest and no pneumatic foramen. The fourth metacarpal is longer than the first phalanx of the wing finger. The wingspan was about 2 meters (6.6 ft). The pelvis has been heavily damaged. Part of a femur is present, its estimated length was 91 millimeters (3.6 in).
Classificationedit
Longchengpterus has been assigned to the Istiodactylidae sharing with Istiodactylus tooth form and count as well as a large skull opening. A notable difference is the lack of a broad snout. It was the second istiodactylid named and the first from China, adding to the known pterosaur diversity from Early Cretaceous layers of China.[3]
The cladogram below follows Witton's 2012 analysis, wherein he found Istiodactylidae to consist of five taxa (the first three species listed are outgroup or reference taxa):[4]
^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.
^Upchurch, P.; Andres, B.B.; Butler, R.J.; Barrett, P.M. (2015). "An analysis of pterosaurian biogeography: implications for the evolutionary history and fossil record quality of the first flying vertebrates". Historical Biology. 27 (6): 697–717. doi:10.1080/08912963.2014.939077. PMC4536946. PMID 26339122.
^Wang, L., Li, L., Duan, Y., and Cheng, S.L. (2006). A new istiodactylid pterosaur from western Liaoning, China. Geological Bulletin of China25(6):737-740.
^Witton, Mark P. (2012). "New Insights into the Skull of Istiodactylus latidens (Ornithocheiroidea, Pterodactyloidea)". PLOS ONE. 7 (3): e33170. Bibcode:2012PLoSO...733170W. doi:10.1371/journal.pone.0033170. PMC3310040. PMID 22470442.
longchengpterus, sometimes, misspelled, lonchengopterus, genus, istiodactylid, pterodactyloid, pterosaur, from, barremian, aptian, lower, cretaceous, jiufotang, formation, chaoyang, liaoning, china, fossil, remains, dated, back, about, million, years, temporal. Longchengpterus sometimes misspelled as Lonchengopterus 1 2 is a genus of istiodactylid pterodactyloid pterosaur from the Barremian Aptian age Lower Cretaceous Jiufotang Formation of Chaoyang Liaoning China Its fossil remains dated back about 120 million years ago LongchengpterusTemporal range Early Cretaceous 120 Ma PreꞒ Ꞓ O S D C P T J K Pg N Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataOrder PterosauriaSuborder PterodactyloideaFamily IstiodactylidaeGenus LongchengpterusWang Li Duan and Cheng 2006Species L zhaoiBinomial name Longchengpterus zhaoiWang et al 2006 Contents 1 Etymology 2 Description 3 Classification 4 See also 5 ReferencesEtymology editThe genus was named in 2006 by Wang Li Li Li Duan Ye and Cheng Shao li The genus name is derived from the old name of Chaoyang City Longcheng and a Latinized Greek pteron wing The specific name honors Zhao Dayu the president of Shenyang Normal University and a contributor to the founding of the Western Liaoning Institute of Mesozoic Paleontology Description editLongchengpterus is based on holotype LPM 00023 found at Yuanjiawa near Dapingfanga a compressed incomplete skeleton and partial skull on a single plate The posterior part of the skull has been damaged It is elongated with a length of 262 millimeters 10 3 in The large skull opening the fenestra nasantorbitalis is triangular in form and occupies much of the snout The teeth in the upper jaw are concentrated in the front part and spaced far apart their number is uncertain The lower jaws have been well preserved They are 220 millimeters 8 7 in long and their symphysis is short Twelve teeth are present in the dentary They have a sharp point but are laterally compressed curving slightly inwards The humerus 88 millimeters 3 5 in long has a low deltopectoral crest and no pneumatic foramen The fourth metacarpal is longer than the first phalanx of the wing finger The wingspan was about 2 meters 6 6 ft The pelvis has been heavily damaged Part of a femur is present its estimated length was 91 millimeters 3 6 in Classification editLongchengpterus has been assigned to the Istiodactylidae sharing with Istiodactylus tooth form and count as well as a large skull opening A notable difference is the lack of a broad snout It was the second istiodactylid named and the first from China adding to the known pterosaur diversity from Early Cretaceous layers of China 3 The cladogram below follows Witton s 2012 analysis wherein he found Istiodactylidae to consist of five taxa the first three species listed are outgroup or reference taxa 4 Pterodactylus antiquusPteranodon longicepsColoborhynchus spielbergiHongshanopterus lacustrisHaopterus gracilisIstiodactylidae Nurhachius ignaciobritoiLongchengpterus zhaoiIstiodactylus latidensIstiodactylus sinensisLiaoxipterus brachyognathusSee also editList of pterosaur genera Timeline of pterosaur researchReferences edit 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 Upchurch P Andres B B Butler R J Barrett P M 2015 An analysis of pterosaurian biogeography implications for the evolutionary history and fossil record quality of the first flying vertebrates Historical Biology 27 6 697 717 doi 10 1080 08912963 2014 939077 PMC 4536946 PMID 26339122 Wang L Li L Duan Y and Cheng S L 2006 A new istiodactylid pterosaur from western Liaoning China Geological Bulletin of China 25 6 737 740 Witton Mark P 2012 New Insights into the Skull of Istiodactylus latidens Ornithocheiroidea Pterodactyloidea PLOS ONE 7 3 e33170 Bibcode 2012PLoSO 733170W doi 10 1371 journal pone 0033170 PMC 3310040 PMID 22470442 Portals nbsp Paleontology nbsp China Retrieved from https en wikipedia org w index php title Longchengpterus amp oldid 1206642862, wikipedia, wiki, book, books, library,
