نتایج جستجو برای: oligocene miocene

تعداد نتایج: 7901  

Journal: :Geological Survey of Denmark and Greenland (GEUS) Bulletin 2007

Journal: :New Zealand Journal of Geology and Geophysics 1964

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Jing Che Wei-Wei Zhou Jian-Sheng Hu Fang Yan Theodore J Papenfuss David B Wake Ya-Ping Zhang

Asian frogs of the tribe Paini (Anura: Dicroglossidae) range across several first-order tectono-morphological domains of the Cenozoic Indo-Asian collision that include the Tibetan Plateau, the Himalayas, and Indochina. We show how the tectonic events induced by the Indo-Asian collision affected the regional biota and, in turn, how the geological history of the earth can be viewed from a biologi...

2000
G S. Wilson S M. Bohaty Christopher R. Fielding F Florindo M J. Hannah David M. Harwood K J. Woolfe

The 624.15 m glaciomarine sedimentary succession recovered in the CRP-2/2A drillcore comprises lower Oligocene (< c. 31 Ma) to lower Miocene (18.5 Ma) strata that are overlain by a thin succession of Pliocene and Pleistocene strata. The age model for the CRP-2/2A drillhole, as presented in this paper, is based on combined microfossil biostratigraphy, 40Ar/39Ar ages on volcanic material, 87Sr/86...

2004
WILLIAM J. SANDERS JOHN KAPPELMAN

Newly recovered fossil proboscideans and embrithopods from Chilga, Ethiopia are described and evaluated taxonomi− cally. They are dated to ca. 28–27 Ma (late Oligocene), temporally intermediate between late Eocene–early Oligocene Afro−Arabian faunas dominated by archaic, endemic taxa, and replacement faunas of the early Miocene marked by a mas− sive influx of Eurasian migrants. The paucity of s...

2012
Camilo Montes A. Cardona D. A. Ramírez N. Hoyos J. Wilson D. Farris

The rise of the Isthmus of Panama, linked to a number of climatic, paleoceanographic, and biological events, has been studied mostly from indirect, often distal, geochemical and biotic evidence. We have upgraded existing geologic mapping in central Panama with more than 2000 fi eld stations, over 40 petrographic analyses, and more than 30 new geochronological and thermo chrono logical analy ses...

2013
Christoph Gierl Bettina Reichenbacher Jean Gaudant Dirk Erpenbeck André Pharisat

BACKGROUND The classification of gobioid fishes is still under discussion. Several lineages, including the Eleotridae and Butidae, remain difficult to characterize because synapomorphies are rare (Eleotridae) or have not yet been determined (Butidae). Moreover, the fossil record of these groups is scarce. RESULTS Exceptionally well-preserved fish fossils with otoliths in situ from uppermost O...

Journal: :Journal of Paleontology 2021

Abstract The spider crabs Willinachoides santanai n. gen. sp. from the early-middle Miocene of north Brazil and Paradasygyius rodriguezi late Venezuela are described illustrated. Additionally, Eoinachoides senni Van Straelen, 1933, Oligocene–early Venezuela, is redescribed based on photographs holotype, diagnosis latispinosus Carriol, Muizon, Secretan, 1987, Peru, emended also basis holotype. p...

Journal: :Acta Geologica Polonica 2023

During the late Oligocene to early Miocene residual Magura Basin was located along front of Pieniny Klippen Belt (PKB). This basin supplied with clastic material derived from a south-eastern direction. In Male (Little) Mts. in Poland, Oligocene/ Kremna Fm. Nappe (Krynica subunit) occurs both PKB as well tectonic windows within PKB. Lenses exotic conglomerates contain frequent clasts Mesozoic li...

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