Bivalvia - Thraciida - Thraciidae
Alternative spelling: Homoeodesma
Parent taxon: Thracia according to A. J. W. Hendy 2020
See also Coan et al. 2000
Sister taxa: Thracia (Cetothrax), Thracia (Crassithracia), Thracia (Cyathodonta), Thracia (Ixartia), Thracia (Odoncineta), Thracia (Thracia), Thracia alciope, Thracia applanata, Thracia brioni, Thracia curtansata, Thracia declivis, Thracia depressa, Thracia dilleri, Thracia formosa, Thracia gibsonensis, Thracia grignonensis, Thracia incerta, Thracia jacalitosana, Thracia karquinesensis, Thracia keaseyensis, Thracia kissoumi, Thracia ludovica, Thracia mactroides, Thracia mactropsis, Thracia oblata, Thracia papyracea, Thracia parvula, Thracia prisca, Thracia proavita, Thracia schencki, Thracia sorrentoensis, Thracia stelcki, Thracia suciensis, Thracia ventricosa, Thracia viceliacensis, Thracia weedi, Eximiothracia perscabrosa
Subtaxa: Thracia (Homoeodesma) challisiana Thracia (Homoeodesma) conradi Thracia (Homoeodesma) trapezoides
Type: Thracia conradi
Ecology: facultatively mobile deep infaunal suspension feeder
Distribution:
• Quaternary of United States (25: California, Maine, New York, Oregon collections)
• Pliocene of United States (4: California, North Carolina, Oregon)
• Miocene of United States (8: Maryland, Oregon, Washington)
• Oligocene of United States (10: Washington)
Total: 47 collections each including a single occurrence