*from the Blue Beds of Richardson Range Thunderegg beds, Madris, Oregon. *55 x 65 x 30 mm overall. The worms are up to about 6-8 mm long.
Chalcedony "worms" from the inside of a thunderegg. SWUV green. Usually these are encased in agate (chalcedony) and finding them freestanding is pretty uncommon.
