First report of Devonian corals from the Bitlis-Pötürge Massif (SE Turkey): a rare occurrence of corals on the northern margin of Gondwana

The Bitlis-Pötürge Massif of SE Turkey is a metamorphic belt separating the Arabian Plate from the Taurides. It includes a non-metamorphic Palaeozoic sequence that contains locally fossiliferous strata. Here is reported for the first time an assemblage of Upper Devonian rugose and tabulate corals from the Meydan Formation, composed of the rugose Frechastraea schafferi (PENECKE), Peneckiella cf. teicherti HILL, Pseudopexiphyllum supradevonicum (PENECKE), and Macgeea desioi VON SCHOUPPÉ, and the tabulate Thamnopora reticulata (DE BLAINVILLE), Alveolites ex. gr. suborbicularis and Scoliopora sp. The rugose corals suggest a Late Frasnian age. The palaeobiogeographic affinities of corals are discussed. The species F. schafferi and the genus Pseudopexiphyllum –so far only reported from Turkey, Iran and Afghanistan– are probably limited to the northern margin of Gondwana and therefore diagnostic for this palaeogeographic area. Until now, the northern margin of Gondwana yielded very few Upper Devonian corals so this occurrence in SE Turkey is particularly important to estimate the relationship between these corals and the ones from the northern margin of the Palaeotethys Ocean

PALEOGEOGRAPHIC NORTHEASTERN LIMITS OF<em>APHRODINA DUTRUGEI</em> (COCQUAND, 1862) (HETERODONTA, BIVALVIA) FROM THE CENOMANIAN OF THE ARABIAN PLATFORM

The finding of Aphrodina dutrugei (Cocquand, 1862) in a rich collection of non-rudist bivalve fauna from the famous Cenomanian-Turonian carbonates of the Afro-Arabian Plate has permitted the reevaluation of venerid bivalves during an important period of their evolution. The genus Aphrodina Conrad, 1869, Family Veneridae Rafinesque, 1815, embraces several Tethyan Cretaceous species that range from Cenomanian to Santonian. During the late Albian-Maastrichtian ‘Aphrodiniid’ venerids, were distributed along the western margin of the Atlantic (North and South America), the Afro-Arabian Plate (Jordan, SE Turkey, Morocco, Algeria and Egypt), the eastern Tethys, and the Southern Ocean (India, Japan, western Australia and New Zealand). They are also known in the Turonian-Santonian Trans-Saharan Seaway (Gabon). Until now these fossils have been unknown in any Upper Cretaceous localities of southeastern Turkey. In this paper, we report the first record of one of the most common and widespread shallow infaunal species, Aphrodina dutrugei, in the Cenomanian Derdere Formation in the Mardin-Mazıdağı area, SE Turkey, which is in the extreme northeastern part of its known range

Oligocene–Miocene freshwater gastropods from the Oltu-Narman Basin in eastern Turkey

We describe the first record of a late Oligocene or early Miocene freshwater gastropod fauna from the Susuz Formation of the Oltu-Narman Basin in northeastern Anatolia. The assemblage consists of only six species, indicating the presence of a well-oxygenated lake, pond or anabranch rich in vegetation. Only two of the taxa are related to European Oligo-Miocene species. The fauna might be the first indication of a yet undocumented Eastern Anatolian freshwater biogeographic region, characterized by high endemism and minor influence from the coeval Peri-Paratethyan and Aegean–Anatolian regions in the west. The biostratigraphic value of the assemblage is low but might rather point to a Miocene age of the upper part of the Susuz Formation. Theodoxus susuzianus, Bithynia erzurumensis, and Valvata koehleri are described as new species

KAHRAMANMARAŞ HAVZASI (GD TÜRKİYE) ALT-ORTA MİYOSEN İSTİFİNDE CRASSOSTREA GRYPHOIDES (SCHLOTHEIM)'İN VARLIGI; TAKSONOMİ, PALEOEKOLOJİ VE PALEOCOGRAFYA

- Kahramanmaraş'ın kuzeydogusunda Salyan ve Ahmetcik köyleri arasında yüzeyleyen ve Salyan formasyonunun orta kesimlerini oluşturan Miyosen kayaları Tetis bölgesi için tipik olan bivalve ve gastropodları içerir. Bivalvlerin büyük bir çogunlugu genel olarak iyi korunmuş Crassostrea gryphoides (Schlotheim)'dir. Geç Burdigaliyen-Erken Langiyen yaşlı Salyan formasyonunda, Neojen ostreid bivalvi Crassostrea gryphoides (Schlotheim)'in taksonomisi, paleoekolojisi ve paleocografik özellikleri, günümüzde yaşayan ostreid bivalvlerinin yaşam şekli ve larval gelişimleri ile karşılaştırılarak ele alınmıştır

First report of Devonian corals from the Bitlis-Pötürge Massif (SE Turkey): a rare occurrence of corals on the northern margin of Gondwana

The Bitlis-Pötürge Massif of SE Turkey is a metamorphic belt separating the Arabian Plate from the Taurides. It includes a non-metamorphic Palaeozoic sequence that contains locally fossiliferous strata. Here is reported for the first time an assemblage of Upper Devonian rugose and tabulate corals from the Meydan Formation, composed of the rugose Frechastraea schafferi (PENECKE), Peneckiella cf. teicherti HILL, Pseudopexiphyllum supradevonicum (PENECKE), and Macgeea desioi VON SCHOUPPÉ, and the tabulate Thamnopora reticulata (DE BLAINVILLE), Alveolites ex. gr. suborbicularis and Scoliopora sp. The rugose corals suggest a Late Frasnian age. The palaeobiogeographic affinities of corals are discussed. The species F. schafferi and the genus Pseudopexiphyllum –so far only reported from Turkey, Iran and Afghanistan– are probably limited to the northern margin of Gondwana and therefore diagnostic for this palaeogeographic area. Until now, the northern margin of Gondwana yielded very few Upper Devonian corals so this occurrence in SE Turkey is particularly important to estimate the relationship between these corals and the ones from the northern margin of the Palaeotethys Ocean

&lt;i&gt;Cardiolinka bohemica&lt;/i&gt; (Barrande, 1881) – Un premier représentant de la faune de bivalves de type bohémien du Silurien supérieur en provenance de la plaque Arabique nord, Sud-Est de la Turquie

Pendant les temps Ordovicien-Silurien, l’océan Rhéïque a été un domaine océanique majeur entre Baltica, Laurentia, Perunica et Gondwana. Les bivalves cosmopolites népiomorphiens Praecardiodiei Newell, 1965 et Antipleuroidei Kříž, 2007 sont caractéristiques, pour le Silurien, des domaines Perunica, péri-Gondwana et Baltica, et sont identifiés également en Laurentie et Sibérie. Le bivalve de type bohémien Cardiolinka Kříž, 1981 (Nepiomorpha Kříž, 2007, Cardiolidae Hoernes, 1884 ) du Silurien supérieur de la carotte de forage Bahar-1 a été découvert pour la première fois dans le Sud-Est de la Turquie. Les lits contenant l’espèce Cardiolinka bohemica (Barrande, 1881 ) se trouvent dans la partie moyenne de la Formation Dadaş, au sein du district pétrolier X-Siirt dans les parties nord de la plaque Arabique. Jusqu’à présent, l’espèce cosmopolite C. bohemica n’était connue que dans la période fini-Ludlow–Pridoli du bassin de Prague, en France, dans les Alpes carniennes, en Sardaigne, dans la plate-forme est-européenne (Pologne), en Serbie orientale, dans la plate-forme Moesienne, dans la partie arctique du Canada. C’est pourquoi les résultats étonnants de subsurface, obtenus sur C. bohemica dans la région de Diyarbakir-Bismil (Sud-Est de la Turquie) représenteraient une nouvelle preuve en faveur d’une forte affinité faunistique entre les domaines Perunica, Europe péri-gondwanienne et la marge nord du Gondwana.The Rheic Ocean was a major oceanic domain between Baltica, Laurentia, Perunica and Gondwana in Ordovician-Silurian times. The cosmopolitan nepiomorphian bivalves Praecardioidei Newell, 1965 and Antipleuroidei Kříž, 2007 are characteristic of the Silurian of Perunica, peri-Gondwana, and Baltica, and occur also in Laurentia and Siberia. The Bohemian-type bivalve Cardiolinka Kříž, 1981 (Nepiomorphia Kříž, 2007, Cardiolidae Hoernes, 1884 ), from the Late Silurian of the Bahar-1 well core, has been found for the first time in southeastern Turkey. The strata containing the species Cardiolinka bohemica (Barrande, 1881 ) occur in the middle part of the Dadaş Formation in the interior Petroleum District X-Siirt of the northern parts of the Arabian Plate. The cosmopolitan species C. bohemica was until now known from the Latest Ludlow to Pridoli of the Prague Basin, France, Carnic Alps, Sardinia, East European Platform (Poland), eastern Serbia, Moesian Platform, and Arctic Canada. The new surprising subsurface data on C. bohemica in Diyarbakır-Bismil area (southeastern Turkey) therefore represent another piece of evidence in favour of strong faunistic affinity between Perunica, peri-Gondwanan Europe and the northern Gondwana margin.</p

KÖSRELİK (ANKARA) CİVARINDA AMMONİTİKO ROSSO FASİYESİ'NİN GEÇ SİNEMURİYEN - ERKEN PLİYENSBAHİYEN BİVALVİA, GASTROPODA FAUNASI VE TÜRKİYE'DE İLK KEZ SAPTANAN ANNELID POLYCHAETE TÜRÜNÜN VARLIĞI, PALEOCOĞRAFİK VE PALEOEKOLOJİK ÖZELLİKLERİ

Kuzey ve Güney Alp bölgelerinde kırmızı yumrulu kireçtaşları şeklinde tanımlanan ammonitiko rosso fasiyesinin benzer paleontolojik ve sedimentolojik özellikleri orta Anadolu'nun Ankara çevresinde Alt-Orta Jura stratigrafisi içinde kırmızı marn ve yumrulu kireçtaşı şeklinde gelişmiştir. Ankara'nın kuzeybatısında BağlumKösrelik yerleşim alanında Erken Jura yaşlı 'Ammonitiko Rosso Fasiyesi' özellikteki birimlerden alınan bivalvia, gastropoda ve annelid örnekleri üzerinde çalışılmıştır. Birimde, dört adet bivalv taksonu (Parainoceramus bileciki Conti ve Monari 1991, Parainoceramus nicosiai Conti ve Monari 1991, Inoceramus (Mytilioides) sp. ve Palaeonucula sp), üç adet gastropod taksonu (Pleurotomaria suessii Hörnes 1853, Pleurotomaria sp. ve Eucyclus (Eucyclus) sp.) ve Türkiye'de ilk kez Erken Jura'da saptanan annelid polychate türü Glomerula gordialis (Schlotheim 1820)'in tanımı yapılarak, paleoekolojik ve paleocoğrafik özellikleri incelenmiştir

Premiers temnospondyles du Permien et du Trias de Turquie : implications paléoenvironnementales et paléobiogéographiques

Les tétrapodes du Permien et/ou du Trias sont très rares en Turquie. Cependant, il a été montré que ce groupe est porteur d’un signal paléoenvironnemental et paléogéographique important, aidant à mieux comprendre les modèles de Pangée, et plus particulièrement l’histoire géodynamique de la Turquie qui demeure très débattue au cours du Permien et du Trias. Nous présentons et décrivons ici les premiers temnospondyles découverts en Turquie (SE d’Anatolie) ; un branchiosauridé du Permien moyen et un stéréospondyle du Trias inférieur. Le branchiosaure à lui seul est le premier représentant du groupe au Gondwana, et le premier datant du Permien moyen : il apporte donc des informations paléogéographiques importantes et confirme que les tétrapodes anamniotiques auraient emprunté des voies de migration trans-pangéennes entre l’Europe et le Gondwana. Il apporte également des données nouvelles concernant l’environnement de dépôt du Permien du Sud-Est d’Anatolie. Le stéréospondyle du Trias, quant à lui, représente un des rares tétrapodes connus dans la zone paléoéquatoriale de l’époque et confirme que le renouvellement faunique des tétrapodes anamniotiques s’est effectué assez rapidement après la grande crise Permien-Trias.Permian and Triassic tetrapods are very rare in Turkey. Yet this group bears important paleoenvironmental and paleogeographical signals to better understand Pangean models, and especially the geodynamic history of the Permian and Triassic in Turkey, which remains highly debated. Here we present and describe the first temnospondyls from Turkey (SE Anatolia) which consist of a Middle Permian branchiosaurid and an Early Triassic stereospondyl. The branchiosaurid is the first representative of its group in Gondwana and the first from the Middle Permian: it therefore brings important paleogeographic implications and supports the hypothesis that anamniotic tetrapods may have used trans-Pangean migration routes between Europe and Gondwana. It also brings new data to the debated depositional environment of the Permian of SE Anatolia. The Triassic stereospondyl represents one of the few tetrapods known from paleoequatorial areas and confirms a relatively rapid faunal turnover of the anamniotic fauna after the Permian-Triassic mass extinction.</p

First report of Devonian corals from the Bitlis-Pörtürge Massif (SE Turkey) : a rare occurrence of corals on the northern margin of Gondwana

The Bitlis-Pörtürge Massif of SE Turkey is a metamorphic belt separating the Arabian Plate from the Taurides. It includes non-metamorphic Palaeozoic sequence, locally fossiliferous. Here is reported the first Upper Devonian rugose and tabulate coral from the Meydan Formation, composed of Frechastraea schafferi, Peneckiella cf. teicherti, Pseudopexiphyllum supradevonicum, Macgeea desioi, Thamnopora reticulata, Alveolites ex. gr. suborbicularis and Scoliopora sp. The rugose corals suggest a (late) Frasnian age. The palaeobiogeographic affinity of the corals is discussed and the utility of the species F. schafferi and the genus Pseudopexiphyllum - so far only described in the northern margin of Gondwana - is evaluated