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''Angustinaripterus'' was a basal pterosaur, belonging to the Breviquartossa, and discovered at Dashanpu near Zigong in the Szechuan province of China. ''Angustinaripterus'' was named in 1983 by He Xinlu. The type species is ''Angustinaripterus longicephalus''. The genus name is derived from Latin ''angustus'', "narrow" and ''naris'', "nostril", combined with Latinized Greek ''pteron'', "wing". The specific name is derived from Latin ''longus'', "long", and Greek ''kephale'', "head". The holotype, ZDM T8001, is a single skull with lower jaws, found in 1981 by researchers from the Zigong Historical Museum of the Salt Industry, in the Xiashaximiao Formation (Bathonian). The skull, of which the left side is severely damaged, is very elongated and flat. The back part is missing; in its preserved state it has a length of 192 millimetres; the total length in a complete state was estimated at 201 millimetres. On its top is a low crest, two to three millimetres high. The nares are long, slit-like and positioned above and in front of the large skull openings, the ''fenestrae antorbitales'', with which they are not confluent. Of the jaws, which are very straight, the front part is lacking. There are six pairs of teeth in the maxillae and three pairs in the praemaxillae. In the mandible there are at least ten pairs of teeth, perhaps twelve. The back teeth are small, the front teeth are very long, robust and curved, pointing moderately forwards. At the front they form a large, intermeshing "prey grab", that may have been used to snatch fish from the water surface. The teeth of ''Angustinaripterus'' resemble those of ''Dorygnathus''. He placed ''Angustinaripterus'' into the Rhamphorhynchidae. Because of the derived morphology and the large geographical distance with comparable European forms He also created a special subfamily Angustinaripterinae, of which '' Angustinaripterus'' itself is the only known member; because of this redundancy the concept is rarely used. He concluded that ''Angustinaripterus'' was directly related to the Scaphognathinae. David Unwin however, considers it a member of the other rhamphorhynchid subgroup: the Rhamphorhynchinae. Peter Wellnhofer in 1991, assuming the skull length was 16.5 centimetres (6.5 inches), estimated the wingspan at 1.6 metres (5.25 ft). ==See also== * List of pterosaurs 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「Angustinaripterus」の詳細全文を読む スポンサード リンク
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