Triloculina tricarinata d’Orbigny, 1826

Figure 20.18

1826 Triloculina tricarinata d’Orbigny, p. 299, pl. 1, fig. 8.

2010 Triloculina trigonula (Lamarck); Margreth, p. 103, pl. 11, fig. 2a-c.

2012 Triloculina tricarinata d’Orbigny; Debenay, p. 138.

2012 Triloculina tricarinata d’Orbigny; Milker and Schmiedl, p. 68, fig. 17.23-24.

Description. Test triangular, slightly longer than wide, wall porcelaneous, imperforate, surface smooth; chambers visible, arranged in triloculine form, peripheral margins carinate, sutures distinct; aperture subrounded, arch-shaped opening bordered by a thick rim, with a short tooth fixed at the base.