Brachiopods and crinoids from the MiddleUpper Devonian boundary beds in the Darende-Gürün and Van-Zincirklran areas (Eastern Taurus, Turkey) RÉMY GOURVENNEC & · IZZET HOªGÖR Two new sections in the Eastern Taurides, Turkey, have yielded brachiopods and crinoids of Middle–Late Devonian age. Fifteen brachiopod species, among them two are new (Paillettia menae sp. nov. and Eodmitria sezgini sp. nov.) and three crinoid species have been identified. A late Givetian to early Frasnian age has been established for these sections based on the brachiopods, whereas crinoids rather indicate a late Givetian age. This fossil assemblage reflects strong af- finities with Gondwanan and peri-Gondwanan domains. • Key words: brachiopods, crinoids, Devonian, Gümüșali For- mation, Turkey, new species. GOURVENNEC, R. & HOȘGÖR, Ý. 2015. Brachiopods and crinoids from the Middle–Upper Devonian boundary beds in the Darende-Gürün and Van-Zincirkýran areas (Eastern Taurus, Turkey). Bulletin of Geosciences 90(3), xxx–xxx (10 figures, 3 tables). Czech Geological Survey, Prague. ISSN 1214-1119. Manuscript received June 27, 2014; accepted in revised form May 22, 2015; published online xxxx xx, 2015; issued xxxx xx, 2015. Rémy Gourvennec (corresponding author), CNRS UMR 6538 “Domaines Océaniques”, IUEM, Université de Bretagne Occidentale, Avenue Le Gorgeu, CS 93837, F-29238 Brest, France; remy.gourvennec@univ-brest.fr • Ýzzet Hoþgör, Çalýk Enerji, Petrol ve Gaz Grubu, Ak Plaza, Yașam Caddesi No. 7 – Kat 9, Söðütözü -Ankara, Turkey; izzet.hosgor@calikenerji.com Studies on Paleozoic brachiopods and crinoids in Turkey are few, especially in the region of Van. A lot of our current knowledge is based on old and unreliable determinations in the light of current methods. The latter are often complicated by poor preservation. That is why the key knowledge relies on micropaleontological data, less sensitive to bad conditi- ons generated by tectonics. In the context of a petroleum ex- ploration, one of us (Ý.H.) was able to collect some samples of macrofauna. Despite its scarcity and unfavorable preser- vation, it seemed useful to unveil all of this material that shows an obvious diversity and represents a further step in understanding the complex stratigraphy of the Eastern Tau- rids. Two new species of spiriferides with very particular fea- tures making them easy to identify should be useful ele- ments for future correlations between different regions of the Eastern Taurids and even beyond. Uncertainties inherent to the quality of material restrict to some extent the strength of paleogeographic conclusions. However we make an at- tempt to compare the present fauna with the same or age-equivalent faunas known from elsewhere in the world. Geological setting The Taurus Belt, as a part of the Alpine-Himalayan oroge- nic system, is located along the southern portion of Anato- lia, covering an area of about 127,500 km 2 . Three major faults oriented from north to south divide the Taurus Belt into three geographic parts from the east to the west (Fig. 1): (1) The area of the eastern Taurus region bordered in the east by the East Anatolian Fault and in the west by the Ecemis Fault, (2) the central Taurus region located be- tween the Ecemis Fault in the east and the Kýrkkavak Fault in the west, and (3) the western Taurus region lies between the Kýrkkavak Fault and the Aegean Sea (Fig. 1; Özgül 1976). Devonian units of different litho-types and of different paleogeographic origin are parts of thick Paleozoic sedi- mentary successions of the Pontides, Taurides and Arabian Plate. In the Taurides of Southern Turkey, Özgül (1976) distinguished six different tectono-stratigraphic units: Geyikdað Unit, Aladað Unit, Bolkardað Unit, Bozkýr Unit, Alanya Unit and Antalya Unit. The present study is per- formed in the Geyikdað Unit of the Eastern Taurides. The parautochthonous Geyikdað Unit with its Cambrian- Lower Carboniferous succession includes most of the Pa- leozoic units in this region. Devonian sequences of the Geyikdað Unit in the Eastern Taurides are represented in terms of lithostratigraphic units by the Ayýtepesi, Șafak- tepe and Gümüșali formations (Fig. 1A, B). The general 1 DOI 10.3140/bull.geosci.1526