Pre-Devonian evidence of this jellyfish is exceedingly rare; this location and one in New Brunswick hold the only known fossils.

The quality and quantity of these fossil tracks in the quarry are extremely valuable to paleontologists.

At present, the quarry has over 1,000 acres of quarriable land and possesses 37,000 feet of European sawing equipment.

The most prominent fossils found at the quarry are scyphozoan medusae (true jellyfish) ranging in diameter from 50 to 70 centimeters, the largest jellyfish in the fossil record; these were initially discovered in 1998 by Dan Damrow, who published with paleontologist James Hagadorn.

[3][4] Paleontologists have also discovered slug- and mollusk-like climactichnites, as well as fossilized trackways of anthropods (including protichnites and diplichnites), and stromatolites including elephant skin, sand-chips, and domal sand stromatolites.