Sigmoidella elegantissima (Parker and Jones, 1865)

Figure 3.6

1865 Polymorphina elegantissima Parker and Jones, p. 438.

2012 Sigmoidella elegantissima (Parker and Jones); Debenay, p. 248.

2015 Sigmoidella elegantissima (Parker and Jones); Hanagata and Nobuhara, p. 38, fig. 13.24-26.

Description. Test large, asymmetrical, cross section sigmoidal, wall calcareous, finely perforate, surface smooth; final chambers enveloping the initial ones on one side, coiling partially evolute on the other side; sutures slightly depressed; aperture terminal, radiate.