Data from: Variations of mesozoic feathers: insights from the morphogenesis of extant feather rachises

Shuo Wang, Wei-Ling Chang, Qiyue Zhang, Menglu Ma, Feng Yang, De Zhuo, Harn I-Chen Hans, Rui Yang, Ping Wu, Michael Bruce Habib, Wen-Tau Juan & Cheng-Ming Chuong
The rachises of extant feathers, composed of dense cortex and spongy internal medulla, are flexible and light, yet stiff enough to withstand the load required for flight, among other functions. Incomplete knowledge of early feathers prevents a full understanding of how cylindrical rachises have evolved. Bizarre feathers with unusually wide and flattened rachises, known as “rachis-dominated feathers” (RDFs) have been observed in fossil non-avian and avian theropods. Newly discovered RDFs embedded in early Late Cretaceous...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
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