Figure 3
From: Molecular composition and ultrastructure of Jurassic paravian feathers
TEM micrographs of YFGP-T5199 ‘forecrown’ feathers.
(a) Layered microstructures that are superficially similar in both size and organisation to keratin fibrils of extant bird feathers. The corrugated internal texturing and partial rupturing are artefacts of the TEM cutting process. This sample chip was also used for SEM-EDX (Fig. 4) and IR microspectroscopic (Fig. 8) analysis. Scale bar: 5 μm. (b) A separate section from the same chip a few micrometres deeper in the fossil feather substrate. Scale bar: 10 μm. (c) Enlargement of (b) showing details of the feather residues and adhering clay minerals. Scale bar: 2 μm.
