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. 1 Immature feathers in juvenile neornithines A. late immature remiges in Pelecanus occidentalis LACM 86193; B. mid to late immature remiges in Otus asio LACM 100682; C. mid to late immature remiges in Turdus migratorius LACM 100338; D-F. mid immature contour feathers in Tyto alba LACM 100815 (nestling). Note tubular (‘ribbon-like’ in compression fossils) appearance of the proximally sheathed portions of the developing feathers Abbreviations: fv. feather vane (exposed distal to the proximal developing portion of the feather still encased in the waxy sheath); sh. waxy sheath. Scale bars = 1 cm