Caymanabyssiidae is a family of sea snails, marine gastropod molluscs in the vaude Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2012). Caymanabyssiidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=411607 on 2013-02-09
This family has no subfamilies. This family was originally the subfamily Caymanabyssiinae Marshall 1985, in the family Pseudococculinidae, containing the genera Caymanabyssia and Colotrachelus. The three other genena were added later by Haszprunar (1988) Haszprunar (1988), On the origin and evolution of major gastropod groups, with special reference to the Streptoneura. J. Moll. Stud. 54: 367-411.
Description The microsculpture of the protoconch consists of prismatic crystals. The apical folds are fused. The rachidian and the lateral teeth of the radula lack cutting surfaces. They have one or several gill leaflets on the left side of the soft body.José H. Leal and M. G. Harasewych, Deepest Atlantic Molluscs: Hadal Limpets (Mollusca, Gastropoda, Cocculiniformia) from the Northern Boundary of the Caribbean Plate, Invertebrate Biology, Vol. 118, No. 2 p. 127
Genera Amphiplica Haszprunar, 1988 Caymanabyssia Moskalev, 1976 Colotrachelus Marshall, 1986 Yaquinabyssia Haszprunar, 1988
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