Abstract

Abstract: During environmental characterization of the Campos Basin, Rio de Janeiro State (22°S), about 120 samples from depths between 400 and 2000 m were dredged with a 0.25-m2 box-core, and a high biodiversity of micro-molluscs was found. Although only dead animals were collected, the shells were often in a good state of preservation. Six new species, belonging to gastropods families Aclididae (Aclis kanela n. sp.), Trochidae (Mirachelus urueuauau n. sp. and Calliotropis pataxo n. sp.), Skeneidae (Palazzia pankakare n. sp. and Adeuomphalus xerente n. sp.), and Tornidae (Ponderinella xacriaba n. sp.) are described.

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