Tucetona Iredale, 1939.
Geological range: Late Cretaceous to Recent (source: Paleobiology Database).
Diversity: The WoRMS database recognizes 50 species of extant Tucetona (unvetted). The Paleobiology Database recognizes 12 species from the fossil record (unvetted).
Paleoecology: All species of Tucetona are epifaunal or infaunal suspension feeders and are unattached and actively mobile. Source: Todd (2016).
Phylogenetic status: Unknown. A recent molecular phylogenetic analysis by Combosch and Giribet (2016) found that the extant species Tucetona pectinata is nested within the paraphyletic genus Glycymeris.