Short note on the first record of fossil shark teeth in the Chehel-Kaman formation, Iran

Nicolae Trif,Morteza Taherpour-Khalil-Abad,Jafar Taheri,Farrokh Ghaemi

doi:10.2298/gabp200214003t

Nicolae Trif, Morteza Taherpour-Khalil-Abad + Show 2 more

Open Access

https://doi.org/10.2298/gabp200214003t

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Abstract

Shark teeth discovered in the late Paleocene-early Eocene Chehel-Kaman Formation in NE Iran bring new data on the fossil fish record from this country. Two genera from the location are described and figured. The present record is one of the very few reports of fossil shark teeth from the Cenozoic of Iran and the first one from this formation and region. The marine vertebrates known from this region of the Tethys Sea are very scarce.

Highlights

The Cenozoic fossil sharks are poorly known in Iran. only a few other records from this country are known, but their exact origin is in general vague and none of them originate in the Kopet-dagh basin
The rest of fossil Chondrichthyes reported from Iran belong exclusively to the Paleozoic, forming a rather diverse fauna
The study area is located in the North-Khorasan province, northeast Iran (Fig. 1). during the last decades a lot of geological investigations have been led in this region, especially in the fields of litho- and biostratigraphy, this tectono-sedimentary zone requires additional further studies in other different fields of research as well

Summary

Introduction

The Cenozoic fossil sharks are poorly known in Iran. only a few other records from this country are known (adNET et al, 2009; owFI et al, 2016), but their exact origin is in general vague and none of them originate in the Kopet-dagh basin. The Cenozoic fossil sharks are poorly known in Iran. Only a few other records from this country are known (adNET et al, 2009; owFI et al, 2016), but their exact origin is in general vague and none of them originate in the Kopet-dagh basin. The rest of fossil Chondrichthyes reported from Iran belong exclusively to the Paleozoic, forming a rather diverse fauna (hamPE, 2000; loNG & haIraPETIaN, 2000; YazdI & TurNEr, 2000; haIraPETIaN et al, 2008; haIraPETIaN & GINTEr, 2010; habIbI & GINTEr, 2011).

Geological Setting

Materials and methods

Systematic paleontology