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 elegans (Fischer) at gbif.org †Cucullaea gigantea Conrad, 1862Cucullaea gigantea Conrad, 1862 in Paleobiology Database (2018) https://www.gbif.org/species/121408017 Cucullaea granulosa Jonas, 1846 Cucullaea labiata Lightfoot, 1786) Cucullaea petita Iredale, 1939 Cucullaea vaga Iredale, 1930
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