Lagena variokoreana n. sp.

(Figs 18 H-P; 32F, G)

urn:lsid:zoobank.org:act: 9FA61849-D259-4B25-A841-6633303EFFF5

Lagena sp. F – Margerel 2009: 584, fig. 5S-U.

HOLOTYPE. — Sample: LRK2, 2.20 m (MNHN.F.F67680).

PARATYPE. — Sample: LRK2, 2.20 m (MNHN.F.F67681).

DIAGNOSIS. — Test ovoid ornamented with longitudinal costae, distinct neck ornamented with ridges connecting the costae, aperture rounded, aboral opening.

TYPE AGE. — Late Pliocene.

TYPE LOCALITY. — Brest-LRK2 (Finistère).

ETYMOLOGY. — From Latin vˇarĭē (variety) and koreana ( Lagena cf. koreana McCulloch, 1977).

OTHER MATERIAL EXAMINED. — Sample: LRK2, 2.20 m (MNHN.F.F67682, F67683); sample: LRK2, 2.20 m (MNHN.F.F67757), 27 specimens.

SIZE. — Length = 0.260 mm; diameter = 0.160 mm.

DESCRIPTION

Test ovoid ornamented with longitudinal costae alternating with shorter (30) extend onto the neck; distinct neck surrounding by plates delimiting chamberlets externally closed with trapezoidal walls; wall punctate; aperture rounded; aboral end structure.

REMARK

This species is near of Lagena cf. koreana (McCulloch, 1977: 92, pl. 35, fig. 1). It is differing by a number most large of costae.