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Taxonomy > Isognomonidae > Isognomon < Previous species - Next species > (within the family) Isognomon janus Carpenter, 1857 Keen (1971) Sea shells of tropical West America. Marine Mollusks from Baja California to Peru. - p. 79 Brusca (1980) Common intertidal marine invertebrates of the Gulf of California. 2nd edition. - p. 139 Ortíz-Arellano & Flores-Campaña (2008) Catalogo descriptivo e ilustrado de los moluscos de la zona Intermareal de las islas de la bahía de Navachiste, Sinaloa, México. - p. 67 Coan & Valentich-Scott (2012) Bivalve Seashells of Tropical West America. Marine Bivalve Mollusks from Baja California to Northern Peru. - p. 220 Gurgo Salice & Cáceres (2021) Baja Californian sea shells. - p. 196 Statistics Frequency occasional - 22 localities (11.17 %) Sediment 75 (0 fine >> 100 coarse sediment) Size and comments The species reaches a height of nearly 100mm, but beach finds are much smaller and remain below 45mm. Images Height 25.1mm. Taxonomy > Isognomonidae > Isognomon < Previous species - Next species > (within the family)