YOLDIIDAE
Especes : 10 Taxa : 11 (maj:18-01-06)

YOLDIINAE
Yoldia
Yoldia cooperi Gabb 1865, ( 30 ) Californie S.,
Yoldia glauca Kuroda & Habe 1961, ( 26 ) Japon,
Yoldia hyperborea Loven 1859, ( 30 ) Alaska & Norvege,
Yoldia hyperborea limatuloides Ockelmann 1954, ( 36 ) Artique.,
Yoldia limatula (Say 1831), ( 18 75 ) Caroline,
Yoldia notabilis Yokoyama 1922, ( 5 ) Japon,
Yoldia sapotilla Gould , ( 25 ) Artique & Caroline,
Yoldia scissurata Dall 1897, ( 25 ) Artique & Californie,

Megayoldia
Megayoldia thraciaeformis (Storer 1838), ( 50 ) Artique & Caroline,

Portlandia
Portlandia japonica (Adams & Reeve 1850), ( 18 ) Japon,

Yoldiella
Yoldiella derjugini Bartsch in Scarlato 1981, ( 3 ) Japon,