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After a year hiatus, I am back to posting images of gastropods in my gallery. Before I add new families I am starting with some additions to those families already shown. In Calliostomidae I have changed the only species previously posted from C. mitchelli pontoni to C. willcoxianum and added four additional species. I have also added one additional species to Potamididae and one to Strombidae. The list in these families in my collection are now as follows: Phylum Mollusca Class Gastropoda Order Trochida Family Calliostomidae Calliostoma euconulum Olsson & Harbinson, 1953 Calliostoma jujuconulum Olsson & Harbinson, 1953 Calliostoma mitchelli philanthropus (Conrad, 1834) Calliostoma cf. pulchrum (C.B. Adams, 1850) Calliostoma willcoxianum Dall, 1892 Order Littorinimorph Family Potamididae Cerithidea diegelae Petuch, 1994 Cerithidea lindae Petuch, 1994 Potamides cancelloides Aldrich, 1911 Pyrazisinus kissimmeensis (Olsson, 1967) Pyrazisinus lindae Petuch, 1994 Pyrazisinus scalatus (Heilprin, 1886) Pyrazisinus scalinus Olsson, 1967 Family Strombidae Strombus floridanus Mansfield, 1930 Strombus cf. pugilis (Linnaeus, 1758) Strombus sarasotaensis Petuch, 1994 Lobatus hertweckorum (Petuch, 1991) Lobatus mulepenensis (Petuch, 1994) Lobatus cf. gigas (Linneaus, 1758) Lobatus williamsi (Olsson & Petit, 1964) Lobatus leidyi (Heilprin, 1886) Images can be seen in my gallery Gastropods of the Tamiami Formation.

Has some similarity in general shape but I'm not sure its labeled correctly and its from a different age and formation. You'd be better off looking for Mio-Pliocene, Pleistocene types from Florida on the web but I'm not sure without a complete one showing its ornamentation/various views you are gonna be able to do much more with narrowing the ID. Mike knows his stuff. Turritellas are very tall/thinner relative to their width and yours doesnt exhibit those characters. Here are a couple Mike has in one of the families he was proposing to give you a better look... http://www.thefossilforum.com/index.php?/search/&q=cerithidea&sortby=newest Just in case you werent aware here's a couple of other links that are very helpful. https://www.floridamuseum.ufl.edu/invertpaleo/gallery.asp?gallery=Florida Mollusca-Gastropoda http://www.marinespecies.org/photogallery.php?album=702 There are hundreds of different fossil gastropod species here in Florida. You are in good hunting grounds! Regards, Chris

I have just posted the family Potamididae in Gastropods of the Pinecrest Sand Gallery. http://www.thefossilforum.com/index.php?/gallery/album/2218-gastropods-of-the-pinecrest-sand/ Order Neotaenioglossa Family Potamididae Cerithidea diegelae Petuch, 1994 Cerithidea lindae Petuch, 1994 Potamides cancelloides Aldrich, 1911 Pyrazisinus kissimmeensis (Olsson, 1967) Pyrazisinus lindae Petuch, 1994 Pyrazisinus scalinus Olsson, 1967 The Potamidids are known under a number of common names; horn snails, mud whelks and mud creepers. They are a tropical to subtropical family living in brackish water mud flats and mangroves. Most of these are from the APAC Unit 4 brackish water facies also known as the black layer. As a side note, I am having issues with producing quality images of shells in the 1 cm and smaller range with my current setup. I might have to eliminate these size shells in future posts until I have optimized my technique. Mike

Hi Don Most of the shells are immature but they are as follows: 1. Tritonopsis biconica (Dall, 1915) 2. Trigonostoma sp. 3. Conus postalveatus Kellum, 1926 4 & 6. Appear to be the same Lunatia hemicrypta Gabb, 1860 5. I believe both are different based upon the height of the spires and nature of the umbilicus. On the left is Polinices cf. judsoni (Maury, 1910). On the right Naticidae of some sort. 7. Cerithidea sp. The small bivalve is Nuculana sp. As I have mentioned before, only a few papers have featured the Hayward Landing Member of the Belgrade Formation. It would make a nice little monograph if anyone took it up. Mike