Fig. 5 | Nature Communications

Fig. 5

From: A bony-crested Jurassic dinosaur with evidence of iridescent plumage highlights complexity in early paravian evolution

Fig. 5The alt text for this image may have been generated using AI.

Platelet-like nanostructures in Caihong juji and melanosomes in iridescent extant feathers. a–d Fossilized nanostructures from Caihong feathers preserved as molds in a neck feather (a) and three-dimensional preservation in a neck feather, with SEM stage rotated 45° to show 3D platelet morphology (b), a back feather with SEM stage at 0° (c) and a neck feather showing nanostructure packing (d); e Anna’s hummingbird (Calypte anna) showing overlapping melanosomes within a feather barbule; f white-tailed starfrontlet (Coeligena phalerata) showing stacking and interior morphology (air bubbles) of melanosomes in a feather barbule; g black-tailed trainbearer (Lesbia victoriae) showing exterior surface and morphology of isolated melanosomes in a feather barb; h moustached treeswift (Hemiprocne mystacea) showing densely packed melanosomes in the barbule of a crown feather. Inset in d illustrates 3D stacking of platelet-shaped nanostructures. All scale bars: 1000 nm. Photo credits: Chao PC (e, license CC BY-2.0, https://creativecommons.org/licenses/by/2.0/legalcode), Misty Vaughn f, Lip Kee (g, license CC BY-SA 2.0, https://creativecommons.org/licenses/by-sa/2.0/legalcode), Lip Kee (h, CC BY-SA 2.0, https://creativecommons.org/licenses/by-sa/2.0/legalcode)

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