学名:Longcbengornis sanyanensis Hou,1997
时代:早白垩世,九佛堂组
产地:;辽宁省朝阳县波罗赤。
学名来源:sanyan,汉语拼音“三燕”,为前燕341年十六时期,鲜卑建立的前燕、后燕和北燕地方政权,以当年的龙城,即现在的朝阳市为都城。
保存状况:不完整个体。
基本特征:顶骨后位,颈椎有一腹脊,胸椎椎体长。尾椎不愈合,仍有较长的尾巴。肱骨近端较华夏鸟扩展,近端中央有一大而圆的坑凹构造,骨体直。肱骨稍短于耻骨,叉骨细,叉骨突很长。荐椎不愈合,趾爪强烈钩曲,营树栖生活。体态轻巧。但仍显示出较原始的性质,如尚无尾综骨等。
age: Early Cretaceous;Jiufotang Formation.
locality: Boluochi,Chaoyang City,Liaoning Province,China.
etymology: Genus name is from the ancient name of Chaoyang;species is from the name of an ancient local regime.
preservation: An complete individual.
diagnosis:Parietal posteriorly located.Cervical with ventral process.Thoracic with long centrum.Caudals unfused.Long tail.Humerus more expanded proximally than in Catbayornis,shaft straighe.Furcula slender with long hypocleideum.Sacrls unfused.Pedal claws strongly curved.Pygostyle absent.