Common name	Scientific name	Family	Status	Weight	Countries
Hazelnut ark	Lamarcka avellana	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka bowdeniana	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka emiliae	Arcidae	Not recorded	Not recorded	Not recorded
Mossy ark	Lamarcka imbricata	Arcidae	Not recorded	Not recorded	Not recorded
Changeable ark	Lamarcka mutabilis	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka sakamizuensis	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka sekii	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka subprotracta	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka truncata	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka uedai	Arcidae	Not recorded	Not recorded	Not recorded
Truncated ark	Lamarcka ventricosa	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka volucris	Arcidae	Not recorded	Not recorded	Not recorded
Not recorded	Lamarcka williamsi	Arcidae	Not recorded	Not recorded	Not recorded