PSEUDOCYCLAMMINA SARVAKENSIS SP. NOV. AND PSEUDOTEXTULARIELLA BREVICAMERATA SP. NOV.: FURTHER EVIDENCE FOR THE CENOMANIAN MEGADIVERSITY OF LARGER BENTHIC FORAMINIFERA FROM THE SARVAK FORMATION OF SW IRAN

Abstract

The carbonate succession of the Cenomanian-Turonian Sarvak Formation SW Iran, Zagros Zone contains a diverse assemblage of (larger) benthic foraminifera, such as alveolinids, orbitolinids and others. Two new taxa are described herein as Pseudocyclammina sarvakensis sp. nov. and Pseudotextulariella brevicamerata sp. nov. They are generally not frequently observed (likely biased through a stratigraphic or facies control) as other most common taxa found in the Sarvak Fm. They are herein reported from the Tang-e Darbast (type-locality of both species) and Shahneshin surface sections, and also from the Arman well-1 subsurface section, Fars area and Abadan Plain, respectively in the parts referred to the middle Cenomanian. The Tang-e Darbast section also represents the type-locality of Iraqia ultima Yazdi-Moghadam & Schlagintweit and Simplorabanitina simplex Consorti, Schlagintweit & Yazdi-Moghadam. Pseudocyclammina sarvakensis and Pseudotextulariella brevicamerata are further elements of the so-called ‘Nezzazata-alveolinid’ assemblage zone.