Bivalvia - Trigoniida - Myophorelloidae
Alternative spelling: Scaphotrigonia
Parent taxon: Myophorella according to L. R. Cox 1952
See also Hayami 1975, Melville 1956 and Sepkoski 2002
Sister taxa: Myophorella (Haidaia), Myophorella (Myophorella), Myophorella (Orthotrigonia), Myophorella (Scaphogonia), Myophorella alaskaensis, Myophorella amdoensis, Myophorella argo, Myophorella clavulosa, Myophorella dawsoni, Myophorella devexa, Myophorella formosa, Myophorella freboldi, Myophorella nodulosa, Myophorella orientalis, Myophorella packardi, Myophorella tipperi, Myophorella tuxedniensis, Myophorella yellowstonensis
Subtaxa: Scaphotrigonia naviformis Scaphotrigonia navis
Type: Trigonia navis
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Jurassic of Canada (2: British Columbia collections), France (1), Japan (1), the United Kingdom (2), United States (3: California, Montana)
Total: 9 collections each including a single occurrence