Belongs to Arca (Scapharca) according to Sheldon and Maury 1920
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) weeksi, Arca (Scapharca) wheeleri, Scapharca (Scapharca), 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
Type specimen: no number, a shell
Ecology: facultatively mobile semi-infaunal suspension feeder
Distribution: found only at Sta. 53 - Rio Collazo [Collazo Shale] (Oligocene of Puerto Rico)
Specimen images are retrieved through the ePANDDA API.
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