Results 81 to 90 of about 8,670 (237)
Lungfish diversity in Romer's Gap: Reaction to the end-Devonian extinction [PDF]
, 2016 Romer’s Gap, the interval following the end-Devonian extinction event, has been described as a post extinction trough for vertebrates. It is a time roughly equivalent to the Tournaisian stage of the early Carboniferous, and has been characterized by a ...
Clack, JA, Richards, KR, Smithson, TR
core
Late Frasnian mass extinction: Conodont event stratigraphy, global changes, and possible causes [PDF]
Several abrupt changes in conodont biofacies are documented to occur synchronously at six primary control sections across the Frasnian-Famennian boundary in Euramerica. These changes occurred within a time-span of only about 100,000 years near the end of
Butler, Jamie L. +3 more
core +1 more source
Late Devonian (Famennian) jaws: the icriodid multielement apparatus and its function [PDF]
, 2001 In this study the conodont multielement apparatus of Late Devonian (Famennian) Icriodus altematus is described which has been reconstructed from clustered group findings and separated elements.
Schülke, Immo
core +2 more sources
Diversity of large woody lignophytes preceding the extinction of Archaeopteris: new data from the middle Tournaisian of Thuringia (Germany) [PDF]
, 2005 International audienceAnatomically preserved axes representing three lignophyte species occur in the middle Tournaisian deposit of Kahlleite in Thuringia.
Decombeix, Anne-Laure +3 more
core +3 more sources
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
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
core +1 more source
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.
core +1 more source
Brachiopods and Oxygen Levels During the Survival Interval of the Late Devonian Mass Extinction Recovery in the Great Basin, Western U.S.A. [PDF]
, 1996 John F. Bratton
openalex +1 more source