未成熟羽毛在早白垩世热河鸟类生物群幼年反鸟类中的首次报道

邹晶梅, 福雅曼, 王敏, 郑晓廷

First report of immature feathers in juvenile enantiornithines from the Early Cretaceous Jehol avifauna

Jingmai K. O’CONNOR, Amanda FALK, WANG Min, ZHENG Xiao-Ting

Fig. 4 Juvenile enantiornithine IVPP V 14980 preserving probable immature feathers A. slab A; B. slab B; C. close up of boxed area marked in A showing details of the immature feathers along the distal ulna and proximal carpometacarpus; D. slab B under laser-stimulated fluorescence; E. boxed region in D enlarged to show details of the immature feathers under normal light Abbreviations: if. immature feathers; other abbreviations see Fig. 1. Scale bars = 1 cm