Fig. 13 in A late Paleocene fauna from shallow-water chemosynthesis-based ecosystems, Spitsbergen, Svalbard

Fig. 13. Pleuromyid bivalve?Pleuromya sp. from the Paleocene Basilika Formation, Fossildalen, Spitsbergen, Svalbard. NRM-PZ Mo 149164, partial shell, left valve internal mold with partially preserved shell sculptured by commarginal growth lines (A1), dorsal view of partially preserved internal mold of both valves (A2), ventral view of partially preserved internal mold of both valves (A3).