Theocapsomma, Haeckel, 1887

Kochhann, Karlos G. D., Baecker-Fauth, Simone & Fauth, Gerson, 2013, Late Maastrichtian Radiolaria from ODP Leg 165 - Site 999 B, Colombian Basin, Geodiversitas 35 (1), pp. 5-20 : 14

Theocapsomma sp.

( Fig. 5D ) FIGURED SPECIMEN. — ULVG-7333.

MATERIAL. — One specimen (recovered with the acetic acid method).

DESCRIPTION

Test of three segments. Cephalis completely encased in thorax, generating a dome shaped cephalo-thoracic portion, and bearing a small apical spine. Thorax hemispherical with subcircular pores enclosed in polygonal pore frames, with small nodes protruding from the corners. Lumbar stricture moderately defined externally. Thorax subcylindrical with subcircular pores longitudinally arranged. Distal margin probably ragged.

REMARKS The absence of a vertical tube does not enable a direct comparison to Theocampe daseia Foreman, 1968 and T. bassilis Foreman, 1968 .

Figures

FIG. 5. — SEM images of Radiolaria recovered from sample 999B/60/2W/70-74 cm: A, Rhopalosyringium kleinum Empson-Morin, 1981 (H2O2 method); B, Botryometra heros (Campbell & Clark, 1944) (H2O2 method); C, Cryptamphorella sp. (H2O2 method); D, Theocapsomma sp. (Empson-Morin, 1981) (CH3COOH method); E, Praeconocaryomma californiaensis Pessagno, 1976 (H2O2 method); F, Alievium? sp. (H2O2 method); G, Paronaella? sp. (H2O2 method); H, Orbiculiforma sp. 1 (H2O2 method); I, Orbiculifor- ma sp. 2 (CH3COOH method); J, Crucella sp. (H2O2 method); K, Tholodiscus sp. (H2O2 method); L, Spumellaria gen. et sp. indet. (H2O2 method). The chemical compound after each species indicates the chemical method applied in the recovery of each figured specimen. Scale bars: 100 µm.