Lagena sp. C

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 : 30

Lagena sp. C

( Fig. 19 H-M)

LOCALITIES. — La Sautré (Maine-et-Loire), Mernel (Ille-et-Vilaine).

MATERIAL EXAMINED. — Sample: la Sautré, 15.00 m ( MNHN.F.F67686); sample: Mernel ( MNHN.F.F67687).

AGE. — Early Pliocene to Late Pliocene.

DESCRIPTION

Test globular to ovoid, ornamented with longitudinal costae (31) a few extend onto a conical neck with reticular shape; distinct neck consisting of an overlay of hexagonal-based chamberlets externally closed with reticulate punctate wall; wall hyaline, punctate; aperture rounded; aboral opening.

Figures

FIG. 19. — A-D, Lagena sp.A,Auxais (MNHN.F.F67684):A, lateral view;B, perforated wall;C, D, oral and basal views;E-G, Lagena sp.B,Fécamp (MNHN.F.F67685), lateral, oral and basal views; H-M, Lagena sp. C: H-J, la Sautré (MNHN.F.F67686) in lateral, oral and basal views; K-M, Mernel (MNHN.F.F67687) in lateral, oral and basal views; N-P, Lagunculella grayi n. gen., n. sp., Brest-LRK2, holotype (MNHN.F.F67688): N, lateral view; O, perforated wall; P, oral view. Scale bars: A, E, H, 200 µm; B, 5 µm; C, D, F, G, I-N, 100 µm; P, 50 µm; O, 20 µm.