Lagena striatareticulata, 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 : 24

Lagena striatareticulata n. sp.

( Figs 16 M-P; 17A-F)

urn:lsid:zoobank.org:act:1EACFA48-E184-48A2-85DE-B0F3E4FE73B9

HOLOTYPE. — Sample: la Bouillonnaie, 12.50 m (MNHN.F.F67672).

PARATYPES. — Two paratypes: Sample: la Sautré, 15.00 m (MNHN.F.F67673, F67674).

DIAGNOSIS. — Test ovoid elongated ornamented in part with reticulation, reticulate neck.

TYPE AGE. — Early Pliocene.

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

ETYMOLOGY. — From Latin strĭātura (striae) and rētĭcŭlātus (net).

SIZE. — Length = 0.530 mm; diameter = 0.148 mm.

OCCURENCE. — Marls from la Bouillonnaie and la Sautré (Maineet-Loire).

DESCRIPTION

Test ovoid, elongated, incompletely ornamented with reticulation; neck distinct consisting of an overlay of hexagonal-based chamberlets externally closed with reticulate punctate wall; wall hyaline, punctate; aperture rounded; aboral end structure.

Figures

FIG. 16. — A-L, Lagena striata (d’Orbigny, 1839), SGB3: A-D, MNHN.F.F67669; A, basal view; B-D, lateral, oral and basal views; E-H, MNHN.F.F67670; E, lateral view; F, perforated wall; G, H, oral and basal views; I-L, MNHN.F.F67671; I, lateral view; J, perforated wall; K, L, oral and basal views; M-P, Lagena striatareticulata n. sp.: holotype, la Bouillonnaie (MNHN.F.F67672): M, lateral view; N, perforated wall; O, P, oral and basal views. Scale bars: B, E, I, M, 200 µm: A, C, D, G, H, K, L, O, P, 100 µm; N, 10 µm; F, J, 5 µm.