Heilprinia caloosaensis

Location: SMR Phase 10, Sarasota County, Florida USA.

Status: Extinct

Notes:  This shell is sometimes noted as Heilprinia carolinensis.  Dall (1892) in his description of Fusus caloosaensis carolinensis, stated that further one collects north, the heavier and thicker this species became, but noted that intergrades existed.  Both slender and thick forms are found in the Caloosahatchee Formation.  In the FLMNH database, specimens in Florida are typically identified as H. caloosaensis while those in the Carolinas are listed as H. carolinensis.