Pseudonodosaria brevis ( d’Orbigny, 1846 )

Bergh, Eugene W. & Compton, John S., 2022, Taxonomy of Middle Miocene foraminifera from the northern Namibian continental shelf, Zootaxa 5091 (1), pp. 1-55 : 11

Pseudonodosaria brevis ( d’Orbigny, 1846)

Pl. 1, fig. 19

Dentalina brevis d’Orbigny, 1846, p. 48 , pl. 2, figs. 9, 10.

Glandulina discreta Reuss, 1850, p. 366 , pl. 46, fig. 3; Loeblich & Tappan, 1964, C522, fig. 408: 5–6.

Description: The test wall is calcareous, hyaline. The test is large, ovate, globular and circular in cross section. Chambers become larger as added. Sutures are depressed, with the aperture radiate, projecting slightly from the larger last chamber.

Remarks: One test identified as Pseudonodosaria brevis was found between 74 and 79 cm in core 2670. The test is of moderate size, measuring 0.4 mm in cross-section and up to 0.9 mm in length.

Life strategy: This species is infaunal and adapted to suboxic conditions ( Pezelj et al., 2013 and references therein).

Regional occurrence: This is the first documentation of this species in the area for the middle Miocene Namibian continental shelf. This species has, however, been recorded by Hay et al. (1984) in slope sediments off the Walvis Ridge in late Miocene to Pleistocene sediments.