نتایج جستجو برای: late miocene

تعداد نتایج: 199890  

2013
Ivan Horáček Markéta Knitlová Jan Wagner László Kordos Adam Nadachowski

Molecular phylogeography suggests that Micromys minutus, the sole extant species of the genus, colonized its extensive range quite recently, during the Late Pleistocene-Holocene period. Rich Pliocene and Pleistocene fossil records both from Europe and China suggest rather continuous and gradual in situ phenotype rearrangements from the Pliocene to the Recent periods. To elucidate the discrepanc...

2011
Robert J. Morley

The paleoecology of tropical Podocarpaceae is reviewed for Africa and Southeast Asia. The family first appeared in the Triassic of Gondwana, after which it diversified through the Cretaceous and earliest Tertiary, and although some Northern Hemisphere Jurassic records are known, it has essentially remained a southern or southernderived family until the present day. It seems to show a preference...

2014
Juan D. Carrillo Analía Forasiepi Carlos Jaramillo Marcelo R. Sánchez-Villagra

The vast mammal diversity of the Neotropics is the result of a long evolutionary history. During most of the Cenozoic, South America was an island continent with an endemic mammalian fauna. This isolation ceased during the late Neogene after the formation of the Isthmus of Panama, resulting in an event known as the Great American Biotic Interchange (GABI). In this study, we investigate biogeogr...

2018
Evgeniya N Solovyeva Vladimir S Lebedev Evgeniy A Dunayev Roman A Nazarov Anna A Bannikova Jing Che Robert W Murphy Nikolay A Poyarkov

We hypothesize the phylogenetic relationships of the agamid genus Phrynocephalus to assess how past environmental changes shaped the evolutionary and biogeographic history of these lizards and especially the impact of paleogeography and climatic factors. Phrynocephalus is one of the most diverse and taxonomically confusing lizard genera. As a key element of Palearctic deserts, it serves as a pr...

Journal: :Andean Geology 2023

Arenas Blancas is a poorly known fossiliferous site located in the lower reach of Chasicó creek (Buenos Aires Province, Argentina), with great relevance from biostratigraphic viewpoint. The Macrochorobates scalabrinii Biozone was defined this site, proposed as basis early Huayquerian Stage/Age (Late Miocene); however, geological context and faunal record have never been studied detail. In work,...

2014
Benjamin H. Passey Thure E. Cerling Michael E. Perkins Michael R. Voorhies John M. Harris Shane T. Tucker

Carbon and oxygen isotope ratios of fossil horse tooth enamel from Nebraska and Texas show evidence for late Neogene environmental changes in the Great Plains. The earliest unambiguous C4 dietary signal among Texas equids coincides with the age of the classic late Hemphillian–age Coffee Ranch fauna, which we suggest is ∼6.6 Ma based on volcanic ash correlations. C4 vegetation was present in the...

Journal: :Science 1994
H C Larsen A D Saunders P D Clift J Beget W Wei S Spezzaferri

Glacial till, glaciomarine diamictites, and ice-rafted detritus found in marine cores collected off the shore of southeast Greenland record multiple Late Cenozoic glaciations beginning in the Late Miocene. Distinct rock assemblages and seismic stratigraphic control correlate the diamictites with glaciation of the southeast Greenland margin. Glaciers advanced to the sea during several intervals ...

Journal: :Facies 2022

Abstract Extensive canyons, excavated into the margins of Levant Basin during Oligocene–Miocene, are interesting case-studies for canyon fills in carbonate settings. The Pattish Formation, developed along pre-evaporitic Messinian Beer Sheva Canyon Israel, was investigated using both onshore seismic imaging and field data. has three main facies fill (1) Subparallel reflections mimicking canyon´s...

Journal: :Tectonics 2022

The subsurface and surface structural geometries of the United Arab Emirates (UAE) fold-and-thrust belt (FTB) foreland basins are interpreted from seismic, well data, geology. Twelve horizons ranging in age Miocene to Lower Jurassic were mapped. Additionally, we outlined extent Sumeini Hawasina allochthonous nappes. tectonic subsidence curves suggest that final major passive margin rifting even...

Journal: :Geodiversitas 2021

Albanerpetontids are an extinct clade of superficially salamander-like lissamphibians that range from the Middle Jurassic (Bathonian)-Early Pleistocene and have a primarily Laurasian distribution. The best Cenozoic record for is in Europe, where two species type genus AlbanerpetonEstes & Hoffstetter, 1976 occur over 40 localities early Oligocene-Early age Austria, Czech Republic, France, German...

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