Figure 9. Stirpulina ramosa. A 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 9. Stirpulina ramosa. A, the lip located within the adventitious tube as seen from the posterior aspect. B, a detailed internal view of the hinge region of the left shell valve. CL, clasts; DOC, dorsal cavity; DS, dorsal septum; IL, internal lip; LP, ligament pit; RE, resilifer.