Reconciling the stratigraphy and depositional history of the Lycian orogen-top basins, SW Anatolia

Terrestrial fossil records from the SWAnatolian basins are crucial both for regional correlations and palaeoenvironmental reconstructions. By reassessing biostratigraphic constraints and incorporating new fossil data, we calibrated and reconstructed the late Neogene andQuaternary palaeoenvironments within a regional palaeogeographical framework. The culmination of the Taurides inSWAnatolia was followed by a regional crustal extension from the late Tortonian onwards that created a broad array of NE-trending orogen-top basins with synchronic associations of alluvial fan, fluvial and lacustrine deposits. The terrestrial basins are superimposed on the upper Burdigalian marine units with a c. 7 myr of hiatus that corresponds to a shift from regional shortening to extension. The initial infill of these basins is documented by a transition from marginal alluvial fans and axial fluvial systems into central shallow-perennial lakes coinciding with a climatic shift from warm/humid to arid conditions. The basal alluvial fan deposits abound in fossil macro-mammals of an early Turolian (MN11–12; late Tortonian) age. The Pliocene epoch in the region was punctuated by subhumid/humid conditions resulting in a rise of local base levels and expansion of lakes as evidenced by marsh-swamp deposits containing diverse fossilmammal assemblages indicating late Ruscinian (lateMN15; late Zanclean) ageWe are grateful for the support of the international bilateral project between The Scientific and Technological Research Council of Turkey (TUBITAK) and The Russian Scientific Foundation (RFBR) with grant a number of 111Y192. M.C.A. is grateful to the Turkish Academy of Sciences (TUBA) for a GEBIP (Young Scientist Award) grant. T.K. and S.M. are grateful to the Ege University Scientific Research Center for the TTM/002/2016 and TTM/001/2016 projects. M.C.A., H.A., S.M. and M.B. have obtained Martin and Temmick Fellowships at Naturalis Biodiversity Center (Leiden). F.A.D. is supported by a Mehmet Akif Ersoy University Scientific Research Grant. T.A.N. is supported by an Alexander-von-Humboldt Scholarship. L.H.O. received support from TUBITAK under the 2221 program for visiting scientists

Chalicotheriidae (Mammalia, Perissodactyla) from the late Miocene of Akkaşdağı, Turkey

Saraç, Gerçek, Sen, Sevket (2005): Chalicotheriidae (Mammalia, Perissodactyla) from the late Miocene of Akkaşdağı, Turkey. Geodiversitas 27 (4): 591-600, DOI: http://doi.org/10.5281/zenodo.537344

Rhinocerotidae (Mammalia, Perissodactyla) from the late Miocene of Akka ș da g˘ı, Turkey

International audienceMore than 120 rhinocerotid remains unearthed in the middle Turolian locality of Akka ș dag ı(Central Anatolia) are described. The fauna is diversified, with a pair of large two-horned species, Ceratotherium neumayri (Osborn, 1900) and Stephanorhinus pikermiensis (Toula, 1906), and two smaller species of short limbed aceratheriines (Chilotherium sp. and Acerorhinus sp.). Ceratotherium neumayri is by far the most common species, with a complete skull, 114 specimens and at least 11 individuals. The cranial, dental and postcranial remains of C. neumayri are among the largest ones described so far for this species. The coexistence of C. neumayri , S. pikermiensis ,a nd chilotheres is common in the Turolian of Eastern Mediterranean: comparable rhinocerotid associations are known at Kavakdere (MN 12, Turkey) and Samos (MN 12, Greece). The large size of the C. neumayri specimens is consistent with the middle Turolian age for Akka ș dag˘ı(MN 12), as stated on the whole mammalian fauna and radiometric data. RÉSUMÉ Rhinocerotidae (Mammalia, Perissodactyla) du Miocène supérieur d'Akka ș dag ı, Turquie. Plus de 120 restes de rhinocérotidés découverts dans le gisement Turolien moyen d'Akka ș dag ı (Anatolie centrale) sont décrits. La faune est diversifiée, avec deux espèces de grands rhinocéros bicornes, Ceratotherium neumayri (Osborn, 1900) et Stephanorhinus pikermiensis (Toula, 1906), et deux espèce

Insights into biaxial extensional tectonics: an example from the Sandikli Graben, West Anatolia, Turkey

West Anatolia, together with the Aegean Sea and the easternmost part of Europe, is one of the best examples of continental extensional tectonics. It is a complex area bounded by the Aegean–Cyprus Arc to the south and the North Anatolian Fault Zone (NAFZ) to the north. Within this complex and enigmatic framework, the Sandıklı Graben (10 km wide, 30 km long) has formed at the eastern continuation of the Western Anatolian extensional province at the north-northwestward edge of the Isparta Angle. Recent studies have suggested that the horst–graben structures in West Anatolia formed in two distinct extensional phases. According to this model the first phase of extension commenced in the Early–Middle Miocene and the last, which is accepted as the onset of neotectonic regime, in Early Pliocene. However, it is controversial whether two-phase extension was separated by a short period of erosion or compression during Late Miocene–Early Pliocene. Both field observations and kinematic analysis imply that the Sandıklı Graben has existed since the Late Pliocene, with biaxial extension on its margins which does not necessarily indicate rotation of regional stress distribution in time. Although the graben formed later in the neotectonic period, the commencement of extension in the area could be Early Pliocene (c. 5 Ma) following a severe but short time of erosion at the end of Late Miocene. The onset of the extensional regime might be due to the initiation of westward motion of Anatolian Platelet along the NAFZ that could be triggered by the higher rate of subduction at the east Aegean–Cyprus Arc in the south of the Aegean Sea

A rodent assemblage from the Eo/Oligocene boundary interval near Süngülü, Lesser Caucasus, Turkey

La asociación de roedores de Süngülü, que será descrita a continuación, contiene dos géneros y especies de Ctenodactylidae, un género y especie de Dipodidae y siete géneros representando ocho especies de Muridae. Tres de los géneros y siete especies son nuevos. La composición de la asociación muestra que esta fauna de roedores de Anatolia difiere en muchos aspectos de las de Europa y Asia central y es por tanto endémica. La edad, inferida a partir de la fauna, es final del Eoceno Superior o principio del Oligoceno inferior.The assemblage of rodents from Süngülü that will be described below contains two genera and species of Ctenodactylidae, one genus and species of Dipodidae and seven genera representing eight species of Muridae. Three genera and seven species are new. The composition of the assemblage shows that this rodent fauna from Anatolia differs in many respects from that of Europe and Central Asia and is therefore endemic. The age as inferred from the fauna is Latest Eocene or Earliest Oligocene

Late Miocene−early Pliocene rodents and lagomorphs (Mammalia) from the southern part of Çankırı Basin, Turkey

International audienc

A giant rhinocerotoid (Mammalia, Perissodactyla) from the Late Oligocene of north-central Anatolia (Turkey)

International audienceA giant rhinocerotoid is described for the first time south of the Black Sea, in Turkey. The single specimen, a fragmentary radius referred to Paraceratherium sp., originates from conglomerates nearby at Gozukizilli, in the Cankiri-Corum Tertiary basin. These layers correspond to the Lower member of the Kizilirmak Formation. The same locality (Gozukizilli-2) yields also the small rhinocerotid Protaceratherium sp., cf. P. albigense (Roman, 1912). Three other mammal localities (Gozukizilli-1, in the Lower Member of the formation, with several rodent species; Tepe 641 and Kizilirmak, in the Upper Member, with a diversified micro- and macro-mammal fauna) allow us to refer the Kizilirmak Formation as a whole to the Late Oligocene. All the observed taxa have strong Asian and/or European affinities, which precludes any geographical insulation for this part of Anatolia during the Late Oligocene