Lagunculella flexa ( Cushman & Gray, 1946 ) Margerel, 2023

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 : 30-32

Lagunculella flexa ( Cushman & Gray, 1946) , n. comb. ( Figs 20O, P ; 21 A-M; 32O, P; 33A, B)

Lagena flexa Cushman & Gray, 1946: 22 , pl. 4, figs 16-19.

Lagena implicata Cushman & McCulloch, 1950: 340 , pl. 45, figs 5-7.

Lagena implicatiformis MacCulloch, 1977: 37 , pl. 50, fig. 16.

Procerolagena flexa – Margerel 2009: 584 , figs 5S-U.

LOCALITIES. — SSL (Loire-Atlantique), la Chênelière, la Sautré, la Pugle (Maine-et-Loire).

MATERIAL EXAMINED. — Sample: SSL S3, 2.30 m ( MNHN.F.F67693); sample: la Chênelière, 16.00 m ( MNHN.F.F67694); sample: la Sautré, 15.00 m ( MNHN.F.F67695); sample: la Pugle, 7.00 m ( MNHN.F.F67696); sample: Fécamp 2A ( MNHN.F.F6760), 2 specimens.

AGE. — Early Pliocene.

DESCRIPTION

Test elongated, tubular, generally curved and tapering to oral end, sometimes straight, base truncated or rounded furrowed and ornamented with short strong or fine costae, sometimes extending onto the oral end; wall smooth, hyaline; finely perforate; aperture rounded with everted lip; aboral end structure.

Figures

FIG. 20. — A-D, Lagunculella grayi n. gen., n. sp.: A, Brest-LRK2, holotype (MNHN.F.F67688), basal view; B-D, paratype SSL (MNHN.F.F67689) in lateral, oral and basal views; E-K, Lagunculella baggi (Cushman & Gray, 1946), n. comb., SGB3: E-H, MNHN.F.F67690: E, lateral view; F, perforated wall; G, H, oral and basal views; I-K, MNHN.F.F67691 in lateral, oral and basal views; L-N, Lagunculella doveyensis (Haynes, 1973), n. comb., Fécamp (MNHN.F.F67692), in lateral, oral and basal views; O, P, Lagunculella flexa (Cushman & Gray, 1946), n. comb., SSL (MNHN.F.F67693): O, lateral view; P, perforated wall. Scale bars: A, C, D, M, N, P, 50 µm; B, E, G, H, I, J, K, 100 µm; F, 5 µm; L, O, 200 µm.

FIG. 21. — A-M, Lagunculella flexa (Cushman & Gray, 1946), n. comb.: A, SSL (MNHN.F.F67693), basal view; C-F, la Chênelière (MNHN.F.F67694): C, lateral, D, enlargement neck; E, F, oral and basal views; G-J, la Sautré (MNHN.F.F67695): G, lateral view; H, perforated wall; I, J, oral and basal views; K-M, la Pugle (MNHN.F.F67696) in lateral, oral and basal views; N-P, Lagunculella ovoidea n. gen., n. sp., la Pugle, holotype (MNHN.F.F67697) in lateral, oral and basal views. Scale bars: A, B, I, J, N, O, P, 100 µm; C, E, F, G, K, 200 µm; D, L, M, 50 µm; H, 20 µm.