From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha
Family Tornidae
Cyclostremiscus trilix (Bush, 1883)
Stratigraphy: Pinecrest Sand Member of the Tamiami Formation
Location: Housing construction, Manatee County, Florida USA.
Status: Extinct
Notes: A rare shell often overlooked because of its small size with a distinctly striated umbilicus.