古脊椎动物学报2011，Vol.49Issue(2)：195-200,6.
辽宁朝阳九佛堂组今鸟类(红山鸟科)一新属种
A NEW ORNITHURINE BIRD (HONGSHANORNITHIDAE) FROM THE JIUFOTANG FORMATION OF CHAOYANG, LIAONING, CHINA
摘要
Abstract
A new genus and species (Parahongshanornis chaoyangensis) of a basal ornithurine bird from the Jiufotang Formation in Yuanjiawa Town, Chaoyang, western Liaoning Province is reported. It is morphologically most similar to the basal ornithurines Hongshanornis and Longicrusaris, two only known genera of the Hongshanornithidae by possessing a shorter wing compared to the leg and a “U”-shaped furcula that is significantly longer than wide. The new taxon can be distinguished from these two genera in having a furcula that is anteroposteriorly compressed proximally, with a deep groove along the clavicular symphysis, a sternum with two pairs of posterior excavations, and a pair of short posterior processes between the lateral trabecula and the medial ridge of the sternum, a short and robust first phalanx of the major digit, and a pubis with a distinctive pubic foot. The discovery of the new hongshanornithid from the Jiufotang Formation not only extends the temporal distribution of the Hongshanornithiclae, but also provides new data for discussing the evolutionary differentiation of basal ornithurines in the Early Cretaceous.关键词
辽宁朝阳/早白垩世/九佛堂组/今鸟亚纲/新属种Key words
Chaoyang/ Lianning/ Early Cretaceous/ Jiufotang Formation/ Ornithurae/ new genus and species分类
生物科学引用本文复制引用
李莉,王晶琦,侯世林..辽宁朝阳九佛堂组今鸟类(红山鸟科)一新属种[J].古脊椎动物学报,2011,49(2):195-200,6.基金项目
国家自然科学青年基金(批准号:40802007)资助. （批准号:40802007）
