Lagena sulcata (Walker & Jacob, 1798)

Margerel, Jean-Pierre, 2023, The species of Lageninae Brady, 1881 (Foraminifera) from the Pliocene-Early Pleistocene of north-western France, Fécamp (Seine-Maritime, France) and St Erth (Cornwall, United Kingdom), Geodiversitas 45 (1), pp. 1-53 : 26

Lagena sulcata (Walker & Jacob, 1798) ( Figs 17 N-Q; 18A-D; 32D, E)

Serpula (Lagena) sulcata Boys & Walker in Adams & Kanmacher, 1798: 634, pl. 14, fig. 5. — Wright 1876 -1877: 103, pl. 4, fig. 10.

LOCALITY. — SGB3 (Manche).

MATERIAL EXAMINED. — Sample: SGB3, 9.50 m ( MNHN.F.67677, 67678); sample: SGB3, 9.50 m ( MNHN.F.F67756), 22 specimens.

AGE. — Late Pliocene.

DESCRIPTION Test ovoid, furrowed, ornamented with longitudinal costae (17 to 21), neck distinct; wall smooth, perforate; aperture rounded; aboral end structure.

Figures

FIG. 17. — A-F, Lagena striatareticulata n. sp., la Sautré, paratypes: A-C, MNHN.F.F67672 in lateral, oral and basal views; D-F, MNHN.F.F67673 in lateral, oral and basal views; G-M, Lagena substriata Williamson, 1848: G-J, Brest-LRK2 (MNHN.F.F67674): G, lateral view; H, perforated wall; I, J, oral and basal views; K-M, la Groussinière (MNHN.F.F67676) in lateral, oral and basal views; N-Q, Lagena sulcata (Walker & Jacob, 1798), SGB3 (MNHN.F.F67677): N, O, lateral and oral views; P, perforated wall; Q, basal view. Scale bars: A, D, G, K, N, 200 µm; B, C, E, F, I, J, L, M, O, Q, 100 µm; H, 20 µm; P, 10 µm.