Parvamussium masudai Noda, 1980
NODA, H. 1980. Molluscan fossils from the Ryukyu Islands, southwest Japan. Part 1. Gastropoda and Pelecypoda from the Shinzato Formation in the middle part of Okinawa-jima. Science Reports of the Institute of Geosciences, University of Tsukuba [Section B], 1: 1-95, pls. 1-12 [p. 80, pl. 2, figs. 9a-11b, 13a, 13b]
1980 Parvamussium masudai Noda, 1980
«Nine to 10 internal ribs terminated at ventral margin with round point, small and narrow trigonal ligamental pit, concentric growth lines and small auricle are referrable to Parvamussiumm masudal described from the Pliocene Shinzato Formation.
Localities; Loc. nos. 63 (common)*, 247 (rare)*, 265 (rare).» NODA, H. 1991. Molluscan fossils from the Ryukyu Islands, Southwest Japan. Part 3. Gastropoda and Pelecypoda from the Yonabaru Formation in the southwestern part of Okinawa-jima. Science Reports of the Institute of Geosciences, University of Tsukuba [Section B], 12: 1-63, figs. 1-18. [p. 17]
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Parvamussium masudai Noda, 1980; H. Noda, 1991, Molluscan fossils from the Ryukyu Islands, Southwest Japan. Part 3. Gastropoda and Pelecypoda from the Yonabaru Formation in the southwestern part of Okinawa-jima, figures 7, 8a, 8b, 15, 16.
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