Lagunculella redonensis, 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 : 32

Lagunculella redonensis n. gen., n. sp. ( Figs 22 D-J; 33E, F)

urn:lsid:zoobank.org:act:62AD443B-DAA2-4F8F-B7A8-419B1344290E

HOLOTYPE. — Sample: la Groussinière S6, 16.40-16.90 m (MNHN.F.F67699).

PARATYPE. — Sample: la Groussinière S6, 16.40-16.90 m (MNHN.F.F67700).

DIAGNOSIS. — Test globular, aboral end ornamented with acute costae, aperture with deversed lip.

TYPE AGE. — Early Upper Pliocene.

TYPE LOCALITY. — La Groussinière (Ille-et-Vilaine).

ETYMOLOGY. — From Latin Condātĕ redonum (Rennes).

MATERIAL EXAMINED. — Sample: la Groussinière S17, 21.70- 19.20 m ( MNHN.F.F67762), 9 specimens; sample: la Groussinière S6, 16.40-16.90 m ( MNHN.F.F67763), 6 specimens.

SIZE. — Length = 0.360 mm; diameter = 0.180 mm.

OCCURENCE. — Sandy marls from la Groussinière (Ille-et-Vilaine).

DESCRIPTION

Test globular tapering to a more or less elongated neck, aboral end ornamented with acute costae (10, 11); wall smooth, hyaline, finely perforate; aperture rounded provided with deversed lip; aboral end structure.

Figures

FIG. 22. — A-C, Lagunculella ovoidea n. gen., n. sp., paratype Brest-LRK2 (MNHN.F.F67698) in lateral, oral and basal views; D-J, Lagunculella redonensis n. gen., n. sp.: D-G, la Groussinière, holotype (MNHN.F.F67699); D, lateral view; E, perforates wall; F, G, oral and basal views; H-J, la Groussinière, paratype (MNHN.F.F67700) in lateral, oral and basal views; K-M, Lagunculella semistriata (Williamson, 1848), n. comb., la Pugle (MNHN.F.F67701) in lateral, oral and basal views; N-P, Lagunculella sp., la Pugle (MNHN.F.F67702) in lateral, oral and basal views. Scale bars: A-D, F-K, N, 100 µm; B, L, M, O, P, 50 µm; E, 10 µm.