Monilispira bigemma is an extinct species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae.Worldwide Mollusc Species Data Base: Monilispira bigemma
Description
The length of the shell attains 16 mm. Distribution Fossils were found in Pliocene strata in Florida, United States.
References
Dall, William Healey. Contributions to the Tertiary Fauna of Florida: With Special Reference to the Miocene Silex-beds of Tampa and the Pliocene Beds of the Caloosahatchie River. Vol. 3. 1890.