Hokkaidoconchidae

Hokkaidoconchidae, common name hokkaidoconchids, is an extinct family of deep-water sea snails, marine gastropod mollusks.

Shell description
The shell is small and elongate.

Genera

 * Hokkaidoconcha Kaim, Jenkins & Warén, 2008 - type genus
 * Hokkaidoconcha tanabei Kaim, Jenkins & Warén, 2008 - the type species from the upper Cretaceous in Japan
 * Hokkaidoconcha bilirata Kiel, Campbell, Elder & Little, 2008 - from the lower Cretaceous in Wilbur Springs, California, USA
 * Hokkaidoconcha morenoensis Kiel, Campbell, Elder & Little, 2008 - from the upper Cretaceous in Moreno Gulch, California, USA
 * Hokkaidoconcha occidentalis (Stanton, 1895) - synonym Hypsipleura? occidentalis Stanton, 1895 - from the upper Jurassic to the lower Cretaceous in California: Paskenta, California, Berryessa, San Jose, California, Wilbur Springs, California
 * Hokkaidoconcha tehamaensis Kiel, Campbell, Elder & Little, 2008 - from the upper Jurassic in Paskenta, California, USA