False ark shell

The false ark shells (Cucullaea) are a small genus of marine bivalve molluscs related to the ark clams. The genus is the only member of the family Cucullaeidae.

Species
The World Register of Marine Species lists the following species:
 * †Cucullaea elegans (Fischer)
 * †Cucullaea gigantea Conrad, 1862
 * Cucullaea granulosa Jonas, 1846
 * Cucullaea labiata Lightfoot, 1786)
 * Cucullaea petita Iredale, 1939
 * Cucullaea vaga Iredale, 1930