Alternative combinations: Anadara emarginata, Arca emarginata
Belongs to Anadara (Rasia) according to W. P. Woodring 1973
Sister taxa: Anadara (Rasia) actinophora, Anadara (Rasia) andrewsi, Anadara (Rasia) athroa, Anadara (Rasia) bravardi, Anadara (Rasia) carmenensis, Anadara (Rasia) cercadica, Anadara (Rasia) charcoazulensis, Anadara (Rasia) concinna, Anadara (Rasia) corcupidonis, Anadara (Rasia) cornellana, Anadara (Rasia) costaricensis, Anadara (Rasia) dariensis, Anadara (Rasia) democraciana, Anadara (Rasia) fissicosta, Anadara (Rasia) formosa, Anadara (Rasia) golfoyaquensis, Anadara (Rasia) guayubinica, Anadara (Rasia) honensis, Anadara (Rasia) inaequilateralis, Anadara (Rasia) lienosa, Anadara (Rasia) lita, Anadara (Rasia) medioamericana, Anadara (Rasia) mirandana, Anadara (Rasia) mississippiensis, Anadara (Rasia) sechurana, Anadara (Rasia) springvalensis, Anadara (Rasia) tamarana, Anadara (Rasia) tirantensis, Anadara (Rasia) wiedenmayeri, Anadara (Rasia) zuliana, Rasia arata
Ecology: facultatively mobile epifaunal suspension feeder