Oswaldella encarnae Peña Cantero, Svoboda & Vervoort, 1997: 356 –358, figs 4, 13 D; Peña Cantero & García Carrascosa, 1998: 179; 1999: 214; Peña Cantero & Vervoort, 1998: 36; 2004: 825–826, fig. 5; Peña Cantero & Marques, 1999: 85.
Ecology. Shelf species (Peña Cantero & Vervoort 2004), collected at depths between 252 (Peña Cantero & Vervoort 2004) and 440 m (Peña Cantero et al. 1997), on muddy bottoms (Peña Cantero et al. 1997). Gonothecae: February (Peña Cantero et al. 1997).
Distribution. Endemic to the Weddell Sea (Peña Cantero & Vervoort 2004), known from off the south (Peña Cantero et al. 1997; Peña Cantero & Vervoort 2004) and east coasts (Peña Cantero et al. 1997).