Late Maastrichtian Radiolaria from ODP Leg 165 - Site 999 B, Colombian Basin Author Kochhann, Karlos G. D. Author Baecker-Fauth, Simone Author Fauth, Gerson text Geodiversitas 2013 2013-03-29 35 1 5 20 http://dx.doi.org/10.5252/g2013n1a1 journal article 6418 10.5252/g2013n1a1 601d4544-4775-454a-a797-677f0212775b 1638-9395 4538016 Archaeodictyomitra ? sp. 2 ( Fig. 4D ) FIGURED SPECIMEN. — ULVG-7323. MATERIAL. — 28 specimens (recovered with the hydrogen peroxide method); 28 specimens (recovered with the acetic acid method) . DESCRIPTION Test conical proximally and cylindrical distally; non-lobulated, with poor-developed strictures and costate throughout. Costae converging in the cephalic area. Cephalis probably imperforated and sharply pointed apically. One row of pores (probably relicts) between adjacent costae. Distal margin ragged, with poor-developed costal projections. REMARKS Although O’Dogherty (1994) suggested a broader definition of the genus Dictyomitra Zittel, 1876 , we follow Pessagno’s (1976) criteria and tentatively attribute this species to Archaeodictyomitra (i.e. nonlobulated outline and continuous costae). The poor preservation of all specimens does not enable the recognition of primary pores and prevents the specific identification of the specimens.