Boletín de la Sociedad Geológica Mexicana Volumen 76, núm. 1, A091223, 2024 http://dx.doi.org/10.18268/BSGM2024v76n1a091223

Late Miocene Molluska from the Dar Pahn Unit, Makran, SE Iran

Moluscos del Mioceno Tardío de la unidad Dar Pahn, SE Irán

Mehdi Hadi¹, Majid Mirzaie Ataabadi², Jafar Sharifi³, Mohammad Parandavar⁴,

Zoila Graciela Castillo-Rodríguez⁵, Francisco A. Vega-Sandoval⁶, Francisco J. Vega^7,*

¹ Independent Researcher, Mashhad, Iran.

² Department of Geology, Faculty of Sciences, University of Zanjan, Zanjan, Iran.

³ Department of Geology, Payame Noor University, Tehran, Iran.

⁴ National Iranian Oil Company, Exploration Directorate, Sheikh Bahaei Square, Tehran, Iran.

⁵ Departamento de Ecología y Biodiversidad acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico

⁶ Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.

⁷ Instituto de Geología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.

* Corresponding author: (F.J. Vega) This email address is being protected from spambots. You need JavaScript enabled to view it.

How to cite this article:

Hadi, M., Ataabadi, M.M., Sharifi, J., Parandavar, M., Castillo-Rodríguez, Z.G., Vega-Sandoval, F.A., Vega, F.J., 2024, Late Miocene mollusks from the Dar Pahn Unit, Makran, SE Iran: Boletín de la Sociedad Geológica Mexicana, 76 (1), A091223. http://dx.doi.org/10.18268/BSGM2024v76n1a091223

Manuscript received: October 10, 2023; Corrected manuscript received: November 30, 2023; Manuscript accepted: December 8, 2023.

ABSTRACT

Diverse, abundant and well-preserved mollusk fauna are here reported for the first time from the eastern coast Makram area, where Upper Miocene (Tortonian) sediments of the Dar Pahn Unit crop out, representing shoreface tidal influenced deposits composed mainly of ligh-gray marls. Multiple articulated bivalves and completely preserved the gastropod and bivalve shells indicate little or no transport at all from the original habitat of the mollusk assemblage. A total of 313 specimens, from which 271 correspond to gastropods, were identified only at generic level, since the purpose of this contribution is to offer an introduction to this exceptionally well-preserved mollusk assemblage. Previous studies of the area include detailed nannoplankton biostratigraphy and the report of a balaenopterid cetacean. Future studies include the detailed identification of the specimens, along with sediment analysis in order to find protoconchs and offer an extended version of this introductory report.

Keywords: gastropods, bivalves, genera, Tortonian coast, Oman Sea.