Calophos nannus Petuch, 1994
Stratigraphy: Pinecrest Sand Member of the Tamiami Formation
Location: Quality Aggregates, Sarasota County, Florida USA.
Notes: In comparison to C. wilsoni, C. nannus is smaller with more rounded whorls, shorter spiral and faint expression of ribbing. If generic assignment is correct, it is the second described species of Calophos from North America.