检索结果-南通市图书馆

A New enantiornithine Bird from the Lower Cretaceous Jiufotang Formation in Jinzhou Area, Western Liaoning Province, China

在线全文

学校读者我要写书评

暂无评论

引用

Acta Geologica Sinica(English Edition) 2012年第5期86卷 1039-1044页

作者： LI Li WANG Jinqi ZHANG Xi HOU Shilin Paleontology Institute Shenyang Normal UniversityShenyangLiaoning 110034China

A new Early Cretaceous enantiornithine bird from Liaoning Province of northeastern China, Shengjingornis yangi, gen. et sp. nov., is reported. This new bird possesses the following unique combination of features： a long rostrum, with some teeth in the front; short nasal; slender jugal; Y-shaped furcula, with expanded distal end of the hypocleidum; cake-like sternum, with a low and caudally distributed keel; strut-like and caudally concave coracoid. The derived features of the scapula and the wings suggest a powerful flapping flight capability.

关键词： Early Cretaceous Jiufotang Formation enantiornithine Liaoning Province

A New Enantiornitine Bird with Four Long Rectrices from the Early Cretaceous of Northern Hebei,China

在线全文

学校读者我要写书评

暂无评论

引用

Acta Geologica Sinica(English Edition) 2007年第5期81卷 703-708页

作者： ZHENG Xiaoting ZHANG Zihui HOU Lianhai Tianyu Natural Museum of Shandong Pingyi 273300 China College of Life Sciences Capital Normal University Beijing 100037 China Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Science Beijing 100044 China

Paraprotopteryx gracilis, a new enantiornithine bird from the Early Cretaceous Yixian Formation in Fengning, northern Hebei Province is erected, based on the following characters： Yshaped furcula with a long hypocleidum and a much narrow interclavicular angle, and the morphology of the sternum are different from other enantiornithines. Additionally, alular digit bearing the biggest manual claw extends distally to the distal end of the major metacarpal; the minor metacarpal is slender than the major metacarpal. Carpometacarpus only fused proximally; astragalus and calcaneum partially fused to one another but unfused to the tibia. This is the first record of Mesozoic birds in having four long rectrices, which may represent morphologically a secondary sexual character, an intermediate stage from elongated scale to branched feather, and possess functional advantage in supplementing the lifting surface to compensate the unskilled flight.

关键词： Early Cretaceous Paraprotopteryx gracilis enantiornithine rectrices Fengning Hebei Province

The First Mesozoic Heterodactyl Bird from China

在线全文

学校读者我要写书评

暂无评论

引用

Acta Geologica Sinica(English Edition) 2006年第5期80卷 631-635页

作者： ZHANG Zihui HOU Lianhai HASEGAWA Yoshikasu Jingmai O＇CONNOR Larry D. MARTIN Luis M. CHIAPPE College of Life Sciences Capital Normal University Beijing 100037 China Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Science P.O. Box 643 Beijing 100044 China Gunma Museum of Natural History 1674-1 Kamikuroiwa Tomioka Gunma 370-2345 Japan Natural History Museum of Los Angeles County 900 Exposition Boulevard Los Angeles CA 90007 USA University of Southern California Los Angeles CA 90007 USA Natural History Museum and the Department of Ecology and Evolutionary Biology University of Kansas Lawrence KS 66045 USA

Dalingheornis liweii gen. et sp. nov., a new enantiornithine bird was collected from the early Cretaceous Yixian Formation in northeastern China. It is the first record of a highly specialized heterodactyl foot in Mesozoic birds. The Y-shaped furcula with short hypocleidum is different from that of other enantiornithines. The minor metacarpal is robust and longer than the major metacarpal. A long bony tail composed of 20 caudal vertebrae with chevrons resembling those of dromaeosaurids and thus, highlighting again the evolutionary relationship between birds and non-avian theropods. Well-preserved alula feathers and a heterodactyl foot provide strong evidence for the arboreal habit of Dalingheornis.

关键词： Early Cretaceous heterodactyl enantiornithine Dalingheornis liweii China