Parent taxon: Scapharca according to E. J. Moore 1983
See also Dockery 1982 and Maury 1917
Sister taxa: Anadara (Scapharca) aviculaeformis, Anadara (Scapharca) cepoides, Anadara (Scapharca) inaequivalvis, Anadara (Scapharca) labiosa, Anadara (Scapharca) spiekeri, Arca (Scapharca) aguadica, Arca (Scapharca) collazica, Arca (Scapharca) ecuadoriana, Arca (Scapharca) hopkinsi, Arca (Scapharca) sansebastiana, Arca (Scapharca) weeksi, Arca (Scapharca) wheeleri, Scapharca axelolssoni, Scapharca broughtoni, Scapharca chemnitzii, Scapharca cornea, Scapharca crashleyi, Scapharca crassissima, Scapharca eusphaera, Scapharca inaequivalvis, Scapharca meroensis, Scapharca pertenuicosta, Scapharca pinguescens, Scapharca rustica, Scapharca satowi, Scapharca sedanensis, Scapharca terhaari, Scapharca tjilanangensis, Scapharca vanwinkleae, Scapharca zorritosensis
Subtaxa: Scapharca (Scapharca) cordicosta Scapharca (Scapharca) delicatula Scapharca (Scapharca) diluvii Scapharca (Scapharca) gendinganensis Scapharca (Scapharca) geyleri Scapharca (Scapharca) hulshofi Scapharca (Scapharca) invidiosa Scapharca (Scapharca) multiformis Scapharca (Scapharca) obispoana
Ecology: facultatively mobile semi-infaunal suspension feeder
Distribution:
• Quaternary of Italy (3 collections), Spain (1)
• Pliocene of Algeria (1), Cyprus (1), Greece (3), Indonesia (3), Italy (2), the Philippines (1), Spain (4)
• Miocene to Pliocene of Indonesia (2)
• Miocene of Belgium (9), Brazil (1), Bulgaria (6), Cyprus (1), France (1), Germany (39), Greece (2), Indonesia (7), Italy (10), Morocco (5), the Netherlands (1), Poland (3), Romania (1), Slovakia (1), Spain (1), United States (7: California)
• Oligocene of Austria (1), Hungary (2), United States (23: Mississippi)
Total: 142 collections including 143 occurrences