Stichomitra Cayeux 1897

Stichomitra ? sp. 2

(Fig. 4K)

FIGURED SPECIMEN. — ULVG-7328.

MATERIAL. — 18 specimens (recovered with the hydrogen peroxide method); 15 specimens (recovered with the acetic acid method).

DESCRIPTION

Small Nassellaria with poorly developed segmental divisions. Pores of the test present well-developed polygonal pore-frames. The species possesses an apical horn (broken in the figured specimen).

REMARKS

The poor development of segmental divisions in all recovered specimens does not enable their precise visualization and, consequently, makes difficult a more precise statement.

Family CANNOBOTRYIDAE Haeckel, 1881 Genus Rhopalosyringium Campbell & Clark, 1944 Rhopalosyringium magnificum Campbell & Clark, 1944 (Fig. 4L)

Rhopalosyringium magnificum Campbell & Clark, 1944: 30, pl. 7, figs 16, 17. — Empson-Morin 1981: 265, pl. 8, fig. 1a-d and synonymy therein.

FIGURED SPECIMEN. — ULVG-7329.

MATERIAL. — 17 specimens (recovered with the hydrogen peroxide method); five specimens (recovered with the acetic acid method).

OCCURRENCE. — Maastrichtian of California (Campbell & Clark 1944); Campanian of DSDP Leg 32, Site 313, Mid-Pacific Mountain (Empson-Morin 1981).

Rhopalosyringium kleinum Empson-Morin, 1981 (Fig. 5A)

Rhopalosyringium kleinum Empson-Morin, 1981: 265, pl. 8, figs 2, 3 and synonymy therein.

FIGURED SPECIMEN. — ULVG-7330.

MATERIAL. — Two specimens (recovered with the hydrogen peroxide method); 11 specimens (recovered with the acetic acid method).

OCCURRENCE. —Campanian of DSDP Leg 32, Site 313, Mid-Pacific Mountain (Empson-Morin 1981).