Bivalvia - Carditida - Carditidae
Parent taxon: Cyclocardia according to E. J. Moore 1992
See also Moore 1976
Sister taxa: Cardita (Cyclocardia) steinkei, Cyclocardia (Arcturellina), Cyclocardia (Plionema), Cyclocardia (Scalaricardita), Cyclocardia (Vimentum), Cyclocardia abesinaiensis, Cyclocardia akagii, Cyclocardia borealis, Cyclocardia castor, Cyclocardia castrana, Cyclocardia christiei, Cyclocardia compressa, Cyclocardia dodairensis, Cyclocardia granulata, Cyclocardia hannai, Cyclocardia hannibali, Cyclocardia kurilensis, Cyclocardia mesembria, Cyclocardia moniligena, Cyclocardia novangliae, Cyclocardia pseutella, Cyclocardia spurca, Cyclocardia subtenta, Cyclocardia terryi, Cyclocardia tokunagai, Cyclocardia trentensis, Cyclocardia velutinus, Cyclocardia yoshidai, Cyclocardia zuliana, Venericardia (Cyclocardia) ferruginea, Venericardia (Cyclocardia) harukii, Venericardia (Cyclocardia) otatsumei, Venericardia (Cyclocardia) yokoyamai
Subtaxa: Cyclocardia (Cyclocardia) hannibali Cyclocardia (Cyclocardia) kirkerensis Cyclocardia (Cyclocardia) montereyana
Ecology: facultatively mobile semi-infaunal suspension feeder
Distribution:
• Pliocene of Belgium (5 collections)
• Miocene of Denmark (1), Germany (1), the Netherlands (2), United States (2: California)
• Oligocene of Denmark (3), United States (3: Oregon, Washington)
Total: 17 collections each including a single occurrence