Archaeodictyomitra Pessagno 1976
Authors/Creators
Description
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.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Pessagno
- Kingdom
- Chromista
- Phylum
- Radiozoa
- Order
- Nassellaria
- Family
- Archaeodictyomitridae
- Genus
- Archaeodictyomitra
- Taxon rank
- genus
- Taxonomic concept label
- Archaeodictyomitra Pessagno, 1976 sec. Kochhann, Baecker-Fauth & Fauth, 2013
References
- O'DOGHERTY L. 1994 - Biochronology and Paleontology of Mid-Cretaceous radiolarians from Northern Apennines (Italy) and betic Cordillera (Spain). Memoires de Geologie (Lausanne) 21: 1 - 415.
- PESSAGNO JR E. A. 1976. - Radiolarian zonation and stratigraphy of the Upper Cretaceous portion of the Great Valley sequence, California Coast Ranges. Micropaleontology, Special Publication 2: 1 - 95.