Alternative spelling: Eontia
Parent taxon: Noetia according to P. W. Reinhart 1943
See also da Silva Forti 1969, Richards 1962, Sepkoski 2002 and Todd 2001
Sister taxa: Arca (Noetia) koerti, Arca (Noetia) pondaungensis, Arca (Noetia) reuningi, Noetia (Eontia) centrota, Noetia (Noetia), Noetia (Sheldonella), Noetia bisulcata, Noetia dauleana, Noetia incile, Noetia lindae, Noetia macdonaldi, Noetia magnifica, Noetia mayensis, Noetia reversa, Noetia sheldoniana, Noetia vientoensis
Subtaxa: Eontia palmerae Eontia ponderosa Noetia (Eontia) olssoni
Distribution:
• Quaternary of United States (46: Florida, Georgia, Louisiana, Maryland, Massachusetts, New Jersey, New York, North Carolina, South Carolina, Virginia collections)
• Pliocene to Pleistocene of United States (1: Florida)
• Pliocene of Colombia (1), Ecuador (1), Panama (2)
• Miocene of United States (1: Florida)
Total: 52 collections including 53 occurrences