Gastropods (Snails)--Types

Low-spired, small gastropods
	Worthenia tabulata, Pennsylvanian age
	Worthenia tabulata, Pennsylvanian age, same specimen above
	Trepospira illinoiensis, Pennsylvanian age
	Strobeus sp., Pennsylvanian age
	silicified gastropods, Ordovician age

Low-spired, large gastropods
	Turbonopsis shumardi, internal mold, Devonian age
	Turbonopsis shumardi, Devonian age
	Platyceras dumosum, the spines from a spiney species, Devonian age
	Platyceras sp., recrystallized internal mold, Devonian age
	Maclurites, Ordovician age

High-spired, small gastropods
	Palaeozyglopleura from Devonian age (identified by A. Goldstein)
	Palaeozyglopleura from Devonian age (identified by A. Goldstein)
	Palaeozyglopleura from Devonian age (identified by A. Goldstein)
	specimens D from Pennsylvanian age

High-spired, large gastropods
	Probably Fusispira/Subulities genus. Looks like Fusispira nobilis. The smaller with the fuller whorls looks like Hormotoma sp. [Info. from Peter Lickley.]