Tarsal morphology of the pleuraspidotheriid mammal Hilalia from the middle Eocene of Turkey (original) (raw)
Related papers
Geology, mammals and environments at Akkas¸dagAkkas¸Akkas¸dag ˘ ı, late Miocene of Central Anatolia
2005
Akkas¸dagAkkas¸Akkas¸dag ˘ ı is a new vertebrate locality from Central Anatolia, Turkey, dated to middle Turolian (MN 12). Rich bone pockets are included in the upper horizon of a tuff layer dated to 7.1 Ma. Hipparion remains are particularly abundant. On the basis of skeletons, four different species were recognized in Akkas¸dagAkkas¸Akkas¸dag ˘ ı hipparions sample: 1) H. dietrichi, medium-to large-sized with long and slender limb bones; 2) H. moldavicum , small-to medium-sized with long and slender limb bones; 3) H. brachypus, large-sized with short and robust limb bones; and 4) H. cf. longipes , very large-sized form with very long and slender limb bones. The phylogenetic relationship of the Akkas¸dagAkkas¸Akkas¸dag ˘ ı hipparions with other Eurasian late Miocene hipparions is discussed, and we also analyse biostratigraphic and palaeobiogeographic distribution of the determined species in correlation with the available biochronologic, radio-metric and magnetostratigraphic data. R...
Palaeontology, 2016
Since the discovery of the megaherbivore Arsinoitherium zitteli Beadnell (early Oligocene of Egypt), the extinct order Embrithopoda has remained an enigmatic group, with disputed affinities among ungulates. In this study, new specimens of Palaeoamasia kansui from the early Palaeogene of Turkey are described and a synthetic dental terminology is proposed for embrithopods. Based on 130 cranial-mandibular and dental characters, the first phylogenetic analysis of embrithopods is carried out in aim to enhance the position of Palaeoamasia within embrithopods. The monophyly of Embrithopoda is confirmed, following the topology [Phenacolophus, [Namatherium, [Arsinoitheriinae, Palaeamasiinae]]]. However, phylogenetic relationships between Eurasian embrithopods (Palaeoamasiinae: Palaeoamasia, Crivadiatherium, and Hypsamasia) remain unresolved. The integration of all
Equidae (Mammalia, Perissodactyla) from the late Miocene of Akkașdağı, Turkey
Geodiversitas, 2005
Akkasdagi is a new vertebrate locality from Central Anatolia, Turkey, deted to middle Turolian ( MN 12). Rich bone pockets are included in the upper horizon of a tuff layer dated to 7.1. Ma. Hipparion remains are particularly abundant. on the basis od skeletons, four different species were recognized in Akkasdagi hipparions sample: 1) H. dietrichi, medium -to large-sized with long ans slender limb bones; 2) H. moldavicum, small-to-medium-sized with long ans slender limb bones; 3) H. brachypus, large-sized with short and robust limb bones; and 4) H.cf. longipes, very large-sized form with very long slender linb bones. The phylogenetic relationship of the Akkasdagi hipparions with other Eurasian late Miocene hipparions is discussed, and we also analyse biostratigraphic and palaeobiogeographic distribution of the determindes species in correlation with the available biochronologic, radio-metric and magnetostratigraphic data.
Geodiversitas
Th e Early Pliocene locality of Çalta, Turkey (Ruscinian Age, c. 4.0 Ma) has two species of advanced hipparionine horses that we refer to Plesiohipparion cf. longipes (Gromova, 1952) and Proboscidipparion heintzi (Eisenmann & Sondaar, 1998). Our study follows an extensive treatment of the entire mammalian fauna in 1998 and in particular an important and comprehensive work on the hipparions by Eisenmann & Sondaar in 1998. We undertake herein a morphologic and metric analysis of skulls, mandibles, dentitions and postcranial elements to segregate all elements into these two taxa. Our analysis follows and concurs with Eisenmann & Sondaar's work except for the generic attributions here which are original. Beyond the basic empirical work here, we strike comparisons to other Old World hipparion lineages and fi nd that these two hipparion taxa compare closely, at the genus level, to Asian Plesiohipparion Qiu, Huang & Guo, 1987 and Proboscidipparion Sefve, 1927. Our comparisons further elucidate that Plesiohipparion had undertaken a range extension into Anatolia by 7.1 Ma where it is present at the locality of Akkașdağı. Our work suggests that Proboscidipparion extended its range from China into Anatolia in the Early Pliocene. Reevaluation of the entire Çalta mammalian fauna suggests that Anatolia was a dynamic biogeographic region in the Early Pliocene including endemic forms, Late Miocene Eurasian holdovers and Asian and African immigrant taxa. Turkey was in fact a Eurasian crossroads region of active intercontinental mammalian migrations in the Early Pliocene.
The upper Miocene vertebrate locality of Küçükçekmece West, European Turkey, had provided an artiodactyl assemblage that is rich in species but poor in specimens. The present study allows revising previous artiodactyl lists provided for this site, by recognizing Hippopotamodon cf. antiquus, Dorcatherium maliki n.sp., Palaeotragus sp. (large size), Palaeogiraffa pamiri (Ozansoy, 1965), Bohlinia cf. attica, Gazella cf. ancyrensis, Majoreas cf. elegans, Prostrepsiceros sp., aff. Protoryx cf. enanus, cf. Miotragocerus sp., and Bovidae indet. (large size). The presence of a second suine and a cervid are poorly supported by current data but not excluded. The bulk of this artiodactyl association is also recognized in the Küçükçekmece East fossil assemblage. The Küçükçekmece tragulid is allocated to a new species of a medium sized Dorcatherium with bunoselenodont dentition, long premolars, tricuspid dp2 (p2) and p3, long hypoconid on dp2 and p3, simple distal fossette on p4, and presence of a lingual protocristid on the lower molars. The artiodactyl association of Küçükçekmece points to a Vallesian age, possibly between 9.6-9.4 Ma. The predominance of Dorcatherium and Palaeogiraffa among artiodactyls indicates wooded environmental conditions, whereas the taxonomic spectrum of artiodactyls reveals main influences from both Anatolia and Southern Balkans.
Palaeontology, 2016
Since the discovery of the megaherbivore Arsinoitherium zitteli Beadnell (early Oligocene of Egypt), the extinct order Embrithopoda has remained an enigmatic group, with disputed affinities among ungulates. In this study, new specimens of Palaeoamasia kansui from the early Palaeogene of Turkey are described and a synthetic dental terminology is proposed for embrithopods. Based on 130 cranial-mandibular and dental characters, the first phylogenetic analysis of embrithopods is carried out in aim to enhance the position of Palaeoamasia within embrithopods. The monophyly of Embrithopoda is confirmed, following the topology [Phenacolophus, [Namatherium, [Arsinoitheriinae, Palaeamasiinae]]]. However, phylogenetic relationships between Eurasian embrithopods (Palaeoamasiinae: Palaeoamasia, Crivadiatherium, and Hypsamasia) remain unresolved. The integration of all
Hyaenidae (Carnivora, Mammalia) from late Miocene and Pliocene of Çalta (Ankara, Turkey)
2019
The two vertebrate localities of Çalta are located about 50 km northwest of Ankara in Central Anatolia. Çalta-1 has yielded a rich early Pliocene fauna that was the subject of an exhaustive study in 1998, to which Claude Guérin contributed two articles. From this locality, Ginsburg described Chasmaporthetes kani anatolicus as a new subspecies. Re-examination of the initial material and new dental specimens makes it possible to review the systematic status of this hyena. In addition, a recently found fragment of maxillary, bearing the dental series C-M2, could be attributed to the smallest Hyaenidae, Plioviverrops cf. orbignyi, whose presence in Turkey is reported for the first time. Another locality, named Çalta-2, stratigraphically about 60 m below Çalta-1, has yielded some scarce mammalian fossils, including a mandible of Adcrocuta eximia, which is the common hyena of the Turolian Stage all over Eurasia. Mammals from these two fossiliferous horizons indicate that the sedimentary s...
Palaeontologia Electronica
from the late early Miocene of Turkey and a short overview of early Miocene small suoids in the Old World. Palaeontologia Electronica 18.2.30A: 1-18 palaeo-electronica.org/content/2015/1232-turkish-early-miocene-suids ABSTRACT Suoids are conspicuous components of late early Miocene faunas in Europe, Asia, and Africa. Strikingly, despite a rich fossil record at the Old World scale, no early Miocene suoid remains were known thus far from Anatolia, a region located at the crossroads between Africa, Arabia, Asia, and Europe. Here we describe a fragmentary cranium, mostly preserving the palate, and a dp4 of small suids from the Şemsettin locality in the Çankiri-Çorum Basin, north Central Anatolia. These remains document the first suoids ever recorded in the Early Miocene of Turkey. Both remains are attributed to the subfamily Hyotheriinae. The fragmentary cranium presents an original combination of characters and is attributed to Nguruwe? galaticum sp. nov. The isolated dp4, of much smal...