Eldregeops crassituberculata ( Stumm 1953).
The 'classic' Phacops from Ohio. Matrix free. Enrolled. This one is preserved in golden pyrite and is exceptionally rare. Both huge eyes show superb detail of all the lenses. Pygidium dislodged and slipped down. These beautiful Trilobites from the Medusa Cement works are highly prized collectors. An absolute 'gem'.
Middle Devonian, Cazenovian Stage. Silica Shales.
Medusa Quarry, Sylvania, Ohio, USA.
Trilobite : 3.3 cm across width of the cephalon.
