孔子鸟目(鸟类:尾综骨类)的分类厘定
王敏, 邹晶梅, 周忠和

A taxonomical revision of the Confuciusornithiformes (Aves: Pygostylia)
WANG Min, Jingmai O’CONNOR, ZHOU Zhong-He
Fig. 11 Comparison of furcula and humerus anatomy between Eoconfuciusornis zhengi and Confuciusornis sanctus
A. holotype of Eoconfuciusornis zhengi, IVPP V 11977; B. BMNHC-PH870, referred to E. zhengi in Navalón et al. (2018); C. C. sanctus. The arrowheads in B and C indicate that the deltopectoral crest is perforated by a suboval fenestra in BMNHC-PH870 and C. sanctus, but not in E. zhengi. Line drawings are not to scale