FIGURE 2. Feathers of IVPP V13352 and TNP00996.
From the following article:
Four-winged dinosaurs from China
Xing Xu, Zhonghe Zhou, Xiaolin Wang, Xuewen Kuang, Fucheng Zhang and Xiangke Du
Nature 421, 335-340(23 January 2003)
doi:10.1038/nature01342
Feathers attached to the skull (a), the tail (d), the forelimb (f), the manual digit I (i), and the hindlimb (g) of IVPP V13352, and to the skull (b) and the tail (e) of TNP00996; close-up of the skull feathers of TNP 00996 (c), and of secondaries (h) and large pennaceous feathers on distal metatarsus (j) of IVPP V13352. Note the pennaceous feathers attached to the digit (i) that might be a precursor to the alula. This is concordant with the fact that M. gui has a short manual digit I, because the alula is often associated with a reduced alular digit except in Protopteryx24. Scale bar, 5 cm.
