2024
DOI: 10.21203/rs.3.rs-4626558/v1
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Synchrotron-X-ray fluorescence provides elemental signatures for diverse coloration mechanisms in fossil insects

Nidia Alvarez-Armada,
Samuel L. Webb,
Fiona Gill
et al.

Abstract: Numerous fossil insects exhibit color patterning, but the coloration mechanisms responsible are largely unknown. Here, we use non-destructive SRS-XRF to characterize the spatial distributions of elements in the cuticles of 78 extant and 15 fossil insects collected from six independent fossil localities. LDA reveals a strong taxonomic signal whereby members of the same order or family show similar chemical signatures. Within genera, cuticle regions containing different pigments have distinct chemistries, i.e. b… Show more

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