Caymanabyssiidae
 Caymanabyssiidae is a family of sea snails marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi 2005). This family has no subfamilies. This family was originally the subfamily Caymanabyssiinae Marshall 1986 in the family Pseudococculinidae containing the genera Caymanabyssia and Colotrachelus. The three other genena were added later by Haszprunar (1988)