Cirridae

Cirridae is an extinct family of fossil sea snails, marine gastropod mollusks in the superfamily Porcellioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

These snails date from the Mesozoic era, and are sinistral in their shell-coiling.

Taxonomy
This family consists of three following subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):
 * Cirrinae Cossmann, 1916
 * Platyacrinae Wenz, 1938 – synonym: Hesperocirrinae O. Haas, 1953
 * Cassianocirrinae Bandel, 1993

Genera and species
Genera and species within the family Cirridae include:
 * Alaskacirrus Frýda & Blodgett, 1998 -=– from the Devonian of west-central Alaska
 * Alaskacirrus bandeli Frýda & Blodgett, 1998