Results 11 to 20 of about 14,501 (240)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+9 more sources

A new fossil dolphin Dilophodelphis fordycei provides insight into the evolution of supraorbital crests in Platanistoidea (Mammalia, Cetacea) [PDF]

open access: yesRoyal Society Open Science, 2017
Many odontocete groups have developed enlarged facial crests, although these crests differ in topography, composition and function. The most elaborate crests occur in the South Asian river dolphin (Platanista gangetica), in which they rise dorsally as ...
Alexandra T. Boersma   +2 more
doaj   +1 more source

Depositional characteristics and evolution of Miocene deep-water channel systems in block A of Lower Congo-Congo Fan Basin, West Africa

open access: yesShiyou shiyan dizhi, 2021
Researches on the depositional characteristics, evolution and constraining factors of deep-water channel systems are the key factors to reveal the "source-sink" process at continental margin and make big breakthroughs in deep-water hydrocarbon ...
Hua CHEN   +8 more
doaj   +1 more source

Paleoecological investigation of the Miocene (23.03-5.33 mya) rodents (Mammalia: Rodentia) in Anatolia

open access: yesBulletin of the Mineral Research and Exploration, 2023
Anatolia’s geographical location as a land bridge between Europe, Asia, and Africa, makes it an important passage for mammal migrations, with a rich fossil potential.
Şakir Önder Özkurt, Hasan Vural
doaj   +1 more source

New records of marsupials from the Miocene of Western Amazonia, Acre, Brazil [PDF]

open access: yesActa Palaeontologica Polonica, 2023
The Amazonian region covers a significant part of the South American continent and harbors outstanding biodiversity. However, much of its history is still unknown.
Narla S. Stutz   +12 more
doaj   +1 more source

A mid-miocene age for the Slanci formation near Belgrade (Serbia), based on a record of the primitive antelope Eotragus cf. Clavatus from Višnjica [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2007
In a borhole at Veliko Selo near Belgrade in the Miocene lacustrine sediments Slanci, which are locally known as the Slanačka Serija, a mammal tooth was found. The age of these deposits is under discussion.
van der Made Jan   +2 more
doaj   +1 more source

Reassessment of amber-bearing deposits of Provence, southeastern France

open access: yesBSGF - Earth Sciences Bulletin, 2021
The presence of “geological” amber (or “succin” in old French monographs) has been reported for several centuries in the Mesozoic deposits of Provence, southeastern France.
Saint Martin Jean-Paul   +9 more
doaj   +1 more source

Tracking a “Prehistoric Pompeii” , Rhinoland and Crocodilia: New Discoveries And Interpretations Of Ipolytarnóc (N Hungary) Lower Miocene Track Site [PDF]

open access: yesGeoconservation Research, 2021
The transnational Novohrad-Nógrád Geopark situated in Northern Hungary and Southern Slovakia has several important Neogene fossil sites developed for geotourism. One of them is the lower Miocene paleontological locality complex at Ipolytarnóc , which has
Laszlo Kordos   +2 more
doaj   +1 more source

Protein and chitin preservation in polymeric sheets in Miocene Ecphora gardnerae shells from Maryland, USA [PDF]

open access: yesActa Palaeontologica Polonica
The shells of muricoid gastropod Ecphora gardnerae from the Miocene St. Marys Formation of Maryland, USA, have been shown to contain polymeric sheets within the calcareous matrix. These membranes were found to have amino acids and complex sugar compounds.
Timothy P. Cleland   +5 more
doaj   +1 more source

Geochemistry and petrogenesis of mafic and intermediate dyke swarms in eastern Tafresh (Urumieh-Dokhtar magmatic belt) [PDF]

open access: yesپترولوژی
IntroductionThe Urumieh-Dokhtar magmatic belt is one of the most active magmatic regions of Iran during the Cenozoic era. There are differing views regarding the tectonomagmatic setting of this magmatism; some attribute it to active continental margin ...
Ahmadreza Ahmadi, Behnaz Hosseini
doaj   +1 more source

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