Porosphaera globularis (Phillips, 1829) (Porifera, Calcarea) from the Maastrichtian of the Farokhi Formation of Central Iran

Journal article


Publication Details

Author(s): Wilmsen M, Fürsich F, Majidifard MR
Journal: Cretaceous Research
Publication year: 2012
Volume: 33
Journal issue: 1
Pages range: 91-96
ISSN: 0195-6671
Language: English


Abstract


A small faunule of the calcareous sponge Porosphaera globularis (Phillips, 1829) (Calcarea, Minchinellidae) is described and illustrated from the Maastrichtian Farokhi Formation of Central Iran. The shape of the sponges varies from near-spherical to pyriform with diameters ranging between 5 and 13 mm. The surfaces show small, equidistant apertures corresponding to radiating oscular tubes within a choanosomal skeleton consisting of large tetractines fused to a rigid framework. Radially arranged superficial grooves may also be present in some specimens. External attachment scars have not been observed, but perforations in two specimens may represent sipunculan worm borings. A quiet and fairly deep-water environment can be inferred as the habitat of the sponges, corresponding to data in the literature. So far, Pglobularis was known only from the Upper Cretaceous (Cenomanian–Maastrichtian) of the Boreal Realm. The record from Central Iran is the southernmost occurrence of Pglobularis (palaeo-latitude ca. 20°N) known to date and is the first description of the species from Iran and the Middle East.



FAU Authors / FAU Editors

Fürsich, Franz Prof. Dr.
Naturwissenschaftliche Fakultät
Wilmsen, Markus PD Dr.
Naturwissenschaftliche Fakultät


How to cite

APA:
Wilmsen, M., Fürsich, F., & Majidifard, M.R. (2012). Porosphaera globularis (Phillips, 1829) (Porifera, Calcarea) from the Maastrichtian of the Farokhi Formation of Central Iran. Cretaceous Research, 33(1), 91-96. https://dx.doi.org/10.1016/j.cretres.2011.09.002

MLA:
Wilmsen, Markus, Franz Fürsich, and Mahmoud Reza Majidifard. "Porosphaera globularis (Phillips, 1829) (Porifera, Calcarea) from the Maastrichtian of the Farokhi Formation of Central Iran." Cretaceous Research 33.1 (2012): 91-96.

BibTeX: 

Last updated on 2018-06-08 at 13:23