1981  Sosioceras Fest, Glenister & Furnish: 26.
     2002  Sosioceras.-Leonova: S35.

Type species: Brancoceras pygmaeum Gemmellaro, 1888, p.26 (M).

Shouchangoceratins with small (2 cm) subdiscoidal conch. Only growth lines. Mature peristome with prominent double constriction near periphery. Venter flattened in body whorl.
Suture like Neoaganides grahamensis.