Introducing a new species of brachiopods, Triplesia bojnourdiansis n. sp. (Late Ordovician) at south of Bojnourd for the first time from Iran

Document Type : مقالات پژوهشی

Authors

• Mohammad Ali Yazarlu
• Ali Reza Ashouri
• Mahmoud Ahmadzadeh Heravi
• Abbas Ghaderi

10.22067/sed.facies.v4i2.9617

Abstract

In order to study brachiopod macrofauna in a succession with the age of Late Ordovician, a stratigraphic section in Asadli pass (30 km southwest of Bojnourd city) was selected and measured. This section is composed of intercalations of limestone, sandstone, shale, siltstone and submarine volcanic rocks (1173 m thickness) that is overlain on Late Cambrian strata related to Mila Formation and overlaid by volcano-sedimentary rocks of Silurian. Among collected brachiopods, those inclusive 24 genera and 29 species, a new species of Triplesiidina Suborder and Triplesiidae Family with the name of Triplesia bojnourdiansis n. sp. is identified, named and introduced for the first time. The genus Triplesia that is reporting for the first time from Iran by this research is one of the cosmopolitan brachiopods and was reported from USA, China, Ireland, France, Siberia and … before.

Keywords

• Brachiopod
• Bojnourd
• Asadli pass
• Triplesia bojnourdiansis n. sp

---