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.