Pachycolumella nov. gen., shallow-water benthic imperforate foraminifera and its species from the Maastrichtian and Paleocene of Iran
Septfontaine, M.; Schlagintweit, F.; Rashidi, K. (2019). Pachycolumella nov. gen., shallow-water benthic imperforate foraminifera and its species from the Maastrichtian and Paleocene of Iran. Micropaleontology 65(2): 145-160
In: Micropaleontology. The Micropaleontology Project: New York,. ISSN 0026-2803; e-ISSN 1937-2795, meer
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| Trefwoorden |
Classification > Taxonomy
Earth sciences > Geology > Stratigraphy > Biostratigraphy
Foraminiferida [WoRMS]; Pachycolumella acuta Septfontaine, Schlagintweit & Rashidi, 2019 † [WoRMS]; Pachycolumella elongata Septfontaine, Schlagintweit & Rashidi, 2019 † [WoRMS]; Pfenderinidae Smout & Sugden, 1962 † [WoRMS]
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| Author keywords |
Pfenderinidae; Upper Cretaceous; Early Paleogene |
| Auteurs | | Top |
- Septfontaine, M.
- Schlagintweit, F.
- Rashidi, K.
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| Abstract |
A new pfenderinid taxon is described as Pachycolumella nov. gen. with the two species P. elongata n. sp. (type-species), and P. acuta n. sp. The type material comes from the upper Maastrichtian Tarbur Formation of the Zagros Zone, SW Iran. A reconstruction of Pachycolumella nov. gen is presented including all morpho-structural elements such as a conspicuous central columella. The wall of the elongate and triserially coiled test is microgranular-agglutinated displaying a pseudokeriothecal texture. Pachycolumella species are also reported from the Paleocene (Danian-early Thanetian) of Turkey, Oman, Iran (this paper), India, and Pakistan, thus representing aK-Pg survivor taxon. In Iran Pachycolumella is reported from various localities belonging to both the former northern and the southern Neo-Tethyan margin. In the western Neo-Tethyan realm (e.g., Adriatic Carbonate Platform), Pachycolumella seems to be absent. |
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