Turritella Agate—The Name Is False!
Turritella agate is found in Sweetwater County, Wyoming and around Superior and Wamsutter, Wyoming too.
The little snail that inhabited the shell lived in the Eocene, about 40 million
years ago. These fossils were not laid down in a sea, but in a fresh-
the Turritella family; the true name is Oxyterma genera. A few years ago
this species was known as Goniobasis genera, but further research caused the additional name change. You better check your collection right now and perhaps bring your identification up-
Via MAPS Digest (Mid America Paleontological Society)
and other newsletters, via Stoney Statements 5/15
Borrowed from The Fredricksburg rockhound newsletter.