Lagunculella ovoidea, 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 ovoidea n. gen., n. sp.

( Figs 21 N-P; 22A-C; 33C, D)

urn:lsid:zoobank.org:act:0A2B98EC-7D72-4AC1-B671-E900D0067BE0

HOLOTYPE. — Sample: la Pugle, 13.00 m (MNHN.F.F67697).

PARATYPE. — Sample: LRK2, 3.30 m (MNHN.F.F67698).

DIAGNOSIS. — Test ovoid tapering to oral end, aboral end ornamented with costae, aperture with everted lip.

TYPE AGE. — Early to Late Pliocene.

TYPE LOCALITY. — La Pugle (Maine-et-Loire).

ETYMOLOGY. — From Latin ōvum (ovoid form).

OTHER MATERIAL EXAMINED. — Sample: la Pugle, 13.00 m ( MNHN.F.F67761), 3 specimens.

SIZE. — Length = 0.316 mm; diameter = 0.127 mm.

OCCURENCE. — Marls from la Pugle (Maine-et-Loire) and BrestLRK2 (Finistère).

DESCRIPTION

Test ovoid tapering to oral end, aboral end ornamented with acute costae (9); wall smooth, hyaline, finely perforate; aperture rounded provided with deversed lip; aboral end structure.

Figures

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.