Results 41 to 50 of about 42,398 (325)
Oldest skeleton of a plesiadapiform provides additional evidence for an exclusively arboreal radiation of stem primates in the Palaeocene [PDF]
Royal Society Open Science, 2017 Palaechthonid plesiadapiforms from the Palaeocene of western North America have long been recognized as among the oldest and most primitive euarchontan mammals, a group that includes extant primates, colugos and treeshrews.
Stephen G. B. Chester +4 more
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New scientific direction of the bacterial paleontology in Mongolia
Mongolian Geoscientist, 2019 We review the initial development of Bacterial Paleontology in Mongolia and present some electron microscopic images of fossil bacteria in different stages of preservation in sedimentary rocks.
Dorj Dorjnamjaa +2 more
doaj +1 more source
Археология евразийских степей, 2021 The paper features the results of archaeological and paleontological research in the left bank of the Kuibyshev reservoir, at the mouth of the Aktai River (Republic of Tatarstan).
Galimova Madina Sh. +3 more
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Frontiers in Ecology and Evolution, 2023 The largest source of empirical data on the history of life largely derives from the marine invertebrates. Their rich fossil record is an important testing ground for macroecological and macroevolutionary theory, but much of this historical biodiversity ...
Stewart M. Edie +3 more
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Известия высших учебных заведений: Геология и разведка, 2016 The 175th anniversary of Vladimir Onuphrievich Kovalevsky, an outstanding Russian scientist, considered as a founder of evolutionary paleontology, is celebrated in 2017 year. Before the classical works of V.O. Kovalevsky, paleontology dealt predominantly
V. N. Komarov
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Molecular Taphonomy of Heme: Chemical Degradation of Hemin under Presumed Fossilization Conditions
Molecules, 2023 The metalloporphyrin heme acts as the oxygen-complexing prosthetic group of hemoglobin in blood. Heme has been noted to survive for many millions of years in fossils. Here, we investigate its stability and degradation under various conditions expected to
Mariam Tahoun +4 more
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Possible Origin of Stagnation and Variability of Earth's Biodiversity [PDF]
Phys. Rev. Let. 112, 228101 (2014), 2014 The magnitude and variability of Earth's biodiversity have puzzled scientists ever since paleontologic fossil databases became available. We identify and study a model of interdependent species where both endogenous and exogenous impacts determine the nonstationary extinction dynamics.
arxiv +1 more source
Impacts of invasive rats on Hawaiian cave resources
International Journal of Speleology, 2020 Although there are no published studies and limited data documenting damage by rodents in Hawaiian caves, our incidental observations during more than 40 years of surveying caves indicate that introduced rodents, especially the roof rat, Rattus rattus ...
Francis G. Howarth, Fred D. Stone
doaj +1 more source
Land, 2022 The important paleontological and archaeological discoveries made in Tamajón in recent years have enriched the exceptional natural and cultural heritage of this town in the north of the Guadalajara province (central Spain).
Fernando Barroso-Barcenilla +8 more
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Vertebrate Paleontology and Evolution
, 1988 "Carroll has to his credit an immense amount of useful labour in writing the book and will probably corner the market for a vertebrate paleontology text for the rest of this century ...
R. Carroll
semanticscholar +1 more source