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Taxonomy > Bullidae > Bulla Bulla gouldiana Pilsbry, 1895 Keen (1971) Sea shells of tropical West America. Marine Mollusks from Baja California to Peru. - p. 794 Brusca (1980) Common intertidal marine invertebrates of the Gulf of California. 2nd edition. - p. 188 Skoglund (2002) Panamic province molluscan literature: additions and changes from 1971 through 2000. III Gastropoda. - p. 201 Malaquias & Reid (2008) Systematic revision of the living species of Bullidae (Mollusca: Gastropoda: Cephalaspidea), with a molecular phylogenetic analysis. - p. 495 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. 132 Bertsch & Aguilar Rosas (2016) Invertebrados Marinos del Noroeste de México. Marine Invertebrates of Northwest Mexico. - p. 243 Valdés (2019) Northeast Pacific benthic shelled sea slugs. - p. 274 Gurgo Salice & Cáceres (2021) Baja Californian sea shells. - p. 136 Statistics Frequency very common - 92 localities (46.19 %) Sediment 36 (0 fine >> 100 coarse sediment) Size and comments The maximum size of 74mm is not reached by beach finds which remain generally below 45mm. Images Length 29.4mm. Taxonomy > Bullidae > Bulla