中国辽宁早白垩世的一新反鸟  

A NEW ENANTIORNITHINE BIRD(AVES) FROM THE EARLY CRETACEOUS OF LIAONING,CHINA

作　　者：李莉[1,2] 巩恩普[1] 张立东[3] 杨雅军[3] 侯连海[2] 

机构地区：[1]东北大学,沈阳110004 [2]沈阳师范大学古生物研究所,沈阳110034 [3]沈阳地质矿产研究所,沈阳110032

出　　处：《古生物学报》2010年第4期524-531,共8页Acta Palaeontologica Sinica

基　　金：国家自然科学青年基金(编号:40802007);辽宁省教育厅科技项目(编号2008S214)资助

摘　　要：记述产于辽宁省朝阳市早白垩世九佛堂组的一新反鸟化石。依据它所具有的"Y"形的叉骨;乌喙骨较宽且末端凹陷;胸骨侧突细长,并在远端扩大,将其归入反鸟亚纲。此外,依据新材料所特有的头骨结构,如吻长、粗壮;有具钩状的牙齿;额骨大而低等不同于其它反鸟亚纲鸟类的特点,建立新属新种:杨氏弯齿鸟Camptodontus yangi gen.et sp.nov.。新种隶属于长翼鸟科,与长翼鸟的某些特征相似。它的发现不但给反鸟类群增加了一重要新成员,同时也说明早期鸟类分化辐射的复杂性。A new species of Enantiornithine bird from the lower Cretaceous Jiufotang Formation of Chaoyang,Liaoning Province is reported. The new taxon,Camptodontus yangi gen. et sp. nov.,possess several synapomorphies as well as Y-shaped furcula,a wider coracoid with concave end; elongate strunum parapophysis with an enlarged distal end. Moreover,it possesses the following specific skull structures other than many Enantiornithes：a long,thick and strong jaws; greatly caudally curved teeth; and a big lower frontal bone,etc.. Therefore,a new species is built. Its disco-very not only provides new data on the diversity of Enantiornithes,but also indicates the complicated radiation of early birds. As the new species has several characteristics that similar to Longiptery,it belongs to Longipterygidae.

关 键 词：弯齿鸟 反鸟亚纲 九佛堂组 早白垩世 

分 类 号：Q915[天文地球—古生物学与地层学]