Fossilized resin transmits at 540–590 nm, mapping internal structure without a single destructive cut.
Each nodule anchors its inclusion to a 10-million-year window spanning the late Eocene to early Oligocene.
Soft tissue, setae, and wing venation survive in spatial relation no compression fossil can match.
Infrared spectroscopy maps chemical gradients, distinguishing Baltic sources from Dominican and Burmese deposits.