Cymakra poncei is an extinct species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.Bouchet, P. (2017). Cymakra poncei J. Gardner, 1937 †. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=1039039 on 2018-02-07
Description The length of the shell attains 6.5 mm, its diameter 2.4 mm.
Distribution This extinct marine species was found in Lower Miocene strata of the Chipola Formation in Florida, USA.
References
External links Gardner J.A. (1937). The molluscan fauna of the Alum Bluff Group of Florida. Part VI. Pteropoda, Opisthobranchia and Ctenobranchia (in part). United States Geological Survey Professional Paper. 142-F: 251–435, pls 37–48