Lower and Middle Famennian (Upper Devonian) rugose corals from southern Belgium and northern France [PDF]
, 2012 After the late Frasnian extinctions, the rugose corals slowly recovered during the Lower and Middle Famennian (crepida to marginifera conodont zones) in southern Belgium and northern France (Avesnois) (Namur–Dinant Basin). Six genera represented by seven
Denayer, J. +3 more
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Modelling the Late Devonian Climate: Implications for evolution and extinction
, 2021 The Devonian period (419.2 - 358.9 Ma) was characterised by a warm greenhouse climate which transitioned towards glaciation throughout the Late Devonian. This period in Earth’s history was punctuated by repeated environmental and biotic crises. A common feature accompanying these events was widespread ocean anoxia, typically recorded in the geological ...
openaire +1 more source
地质科技通报Objective Research on reefs is highly important for determining sedimentary environments and for oil and gas exploration, but relatively few studies have been conducted on Carboniferous reefs in the Southwest Tarim Basin.
Yijun WANG +5 more
doaj +1 more source
Al Umchaimin depression, Western Iraq: An impact structure? [PDF]
Al Umchaimin, in Arabic 'hiding place' or 'place of ambush', is located at latitude 32 degrees 35.5 N and longitude 39 degrees 25 E. The nearly circular depression averages 2.75 km in diameter and is 33-42 m deep.
Underwood, James R., Jr.
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Signals of Supersymmetric Dark Matter [PDF]
, 1999 The Lightest Supersymmetric Particle predicted in most of the supersymmetric scenarios is an ideal candidate for the dark matter of cosmology. Their detection is of extreme significance today.
Abbas, Afsar
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Multiverse Predictions for Habitability: Fraction of Life that Develops Intelligence
, 2019 Do mass extinctions affect the development of intelligence? If so, we may expect to be in a universe that is exceptionally placid. We consider the effects of impacts, supervolcanoes, global glaciations, and nearby gamma ray bursts, and how their rates ...
Sandora, McCullen
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High palaeolatitude (Hodh, Mauritania) recovery of graptolite faunas after the Hirnantian (end Ordovician) extinction event [PDF]
Marine shales directly overlying lower Hirnantian (uppermost Ordovician) glacially related sediments in Mauritania (North-West Africa) have produced a rich graptolite fauna spanning the Ordovician-Silurian boundary in an area of high palaeolatitude.
Deynoux, M. +2 more
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Autopsy of a biological extinction example: the Frasnian-Famennian boundary crisis (364 Ma) [PDF]
, 1999 Without studying the causes of the F/F boundary mass extinction, the precise analysis of ostracod species shows evolutionary process only discernable it the global scale.
Casier, J.G., Lethiers, F.
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The risk of extinction - the mutational meltdown or the overpopulation
, 2006 The phase diagrams survival-extinction for the Penna model with parameters: (mutations rate)-(birth rate), (mutation rate)-(harmful mutations threshold), (harmful mutation threshold)-(minimal reproduction age) are presented.
Malarz, K.
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Development of bryozoaus (bryozoa type) on the border of devonian carboniferous in western part of the altai sayanskaya folded area [PDF]
, 2007 The features of pearlside development in Late Devonian and Early Carboniferous time in western part of the Altai-Sayanskaya folded area have been revealed.
Tolokonnikova, Z. A.
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