Cox, L. R., 1948. Neogene Mollusca from the Dent Peninsula, British North Borneo. Schweizerische Palaeontologische Abhandlungen, 66 (2 ): 1 -70 .
New Species-Group Names:
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stigandi Cox, 1948. p. 60. pl. 6. f. 6a. b.
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vlerki Cox, 1948. p. 59. pl. 6. f. 3a-d.