Lanternalagena sp. B

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 : 36

Lanternalagena sp. B

( Fig. 24 H-L)

LOCALITY. — Mernel (Loire-Atlantique).

MATERIAL EXAMINED. — Sample: Mernel S214, 8.50 m ( MNHN.F.F67709).

AGE. — Late Pliocene.

DESCRIPTION

Test ovoid ornamented with longitudinal costae (12); conical neck surrounded with chamberlets closed with punctate wall and polygonal ornamentation; wall perforate; aperture rounded with striated rim; aboral opening.

Figures

FIG. 24. — A-C, Lanternalagena novocrassicarinata n. gen.,n. sp.,la Groussinière,paratype (MNHN.F.F67707) in lateral view with neck without ornamentation,oral and basal views; D-G, Lanternalagena sp. A, SSL (MNHN.F.F67708): D, lateral view; E, F, oral view and enlargement; G, basal view; H-L, Lanternalagena sp. B, Mernel (MNHN.F.F67709): H, lateral view; I, perforated wall; J, perforated wall on the neck; K, L, oral and basal views; M-O, Lanternalagena sp. C, la Chênelière (MNHN.F.F67710) in lateral, oral and basal views with cracked neck. Scale bars: A, E, J, K, N, 200 µm; B, D, H, I, L, O, P, 100 µm; C, F, G, M, 20 µm.