Open AccessACANTHOCHAETETES FISCHERI N. SP. (CORALLINE DEMOSPONGE) FROM THE UPPER PALEOCENE (THANETIAN) OF IRAQ (KURDISTAN REGION) AND IRAN (SISTAN SUTURE ZONE)
Author(s) -
Félix Schlagintweit,
Francisco SánchezBeristain,
Hyam Saleh Daoud,
Koorosh Rashidi
Publication year - 2022
Publication title -
acta palaeontologica romaniae
Language(s) - English
Resource type - Journals
eISSN - 2248-3802
pISSN - 1842-371X
DOI - 10.35463/j.apr.2022.02.02
Subject(s) - paleontology , geology , fibrous joint , cretaceous , coralline algae , genus , sedimentary depositional environment , biology , reef , zoology , oceanography , anatomy , structural basin
The new coralline demosponge Acanthochaetetes fischeri n. sp. is described from the upper Paleocene (Thanetian) of Iraq (Kurdistan Region, Khurmala Formation) and Iran (Sistan Suture Zone). The genus Acanthochaetetes Fischer is a long-ranging genus known from the Upper Jurassic (A. foroiuliensis), through Upper Cretaceous (e.g., Coniacian A.? krumbachensis) and Eocene (A. eocenica) to Recent. A. fischeri n. sp. is the first record from the Paleocene following the K-Pg mass-extinction, thereby closing the gap within the Santonian-Eocene interval. It occurs in platform-margin/upper slope depositional settings associated with coralline algae, corals, and echinoids.