Figure 22 in A cadaver unearthed: the anatomy of the Japanese living fossil Stirpulina ramosa (Bivalvia: Anomalodesmata: Clavagellidae) - the unique specimen in the collections of Emperor Shōwa

Figure 22. Stirpulina ramosa. The organs of the pericardium, as seen from the right side. AU/PG, auricle and pericardial gland; CA, ctenidial axis; GA, gonadial aperture; ID, inner demibranch; IID, inner surface of the inner demibranch; K, kidney; OV, ovary; P, pericardium; PA, posterior adductor muscle; PALID, point of attachment of the ascending lamella of the inner demibranch to the visceral mass; PPR, posterior pedal retractor muscle; R, rectum; REA, renal aperture; RPA, reno-pericardial aperture; T, testis; V, ventricle; VD, vas deferens.