This Specimen has been sold.
.8" Pyritize Goniatite (Tornoceras) - Hungry Hollow, Ontario
This is a pyrite replaced goniatite (Tornoceras) fossil from the Widder Formation in Arkona, Ontario.
Goniatites possessed a shell, which is divided internally into chambers filled with gas for buoyancy. An open chamber at the front of the shell provided living space for the animal. The general morphology and habit of goniatites was probably similar to that of their later relatives the ammonites, being free swimming and possessing a head with two well developed eyes and arms.