Bivalvia - Cardiida - Tellinidae
Alternative spelling: Heteromacoma
Parent taxon: Macoma according to E. V. Coan et al. 2000
See also Addicott 1973 and Sepkoski 2002
Sister taxa: Macoma (Austromacoma), Macoma (Bendemacoma), Macoma (Macoma), Macoma (Macoploma), Macoma (Panacoma), Macoma (Psammacoma), Macoma (Rexithaerus), Macoma (Salmacoma), Macoma (Scissulina), Macoma albaria, Macoma astori, Macoma brota, Macoma constricta, Macoma costaricana, Macoma danai, Macoma edentula, Macoma elongata, Macoma fusca, Macoma inornata, Macoma kirkinskayae, Macoma lenis, Macoma limula, Macoma lissoni, Macoma marylandica, Macoma meroensis, Macoma montesanoensis, Macoma nasuta, Macoma osakaensis, Macoma pabloensis, Macoma quadrana, Macoma simizuensis, Macoma snohomishensis, Macoma sookensis, Macoma tenta, Macoma tenuiplicata, Macoma tigilensis, Macoma uruguayensis, Macoma viticola, Macoma wilcoxi, Macoma wynootcheensis, Macoma yamadai
Subtaxa: Macoma (Heteromacoma) iris
Ecology: facultatively mobile infaunal deposit feeder
Distribution:
• Quaternary of Japan (1 collection), United States (2: California)
• Eocene of United States (11: Oregon)
Total: 14 collections each including a single occurrence