Barker, M.J., M.C. Munt & J.D. Radley. 1997. The first recorded trigonioidoidean bivalve from Europe. Palaeontology 40(4): 955-963.
Barker et al., 1997. Palaeontology 40(4): 957.
(intro'd as sub-gen. of Nippononaia Suzuki, 1941)
Type species: Nippononaia (Subnippononaia) fordi Barker et al., 1997 (orig. desig.) = Nippononaia fordi
Barker et al., 1997. Palaeontology 40(4): 957, figs. 2a-f.