2017
DOI: 10.15356/0373-2444-2017-1-84-90
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Reasons of Pathologies of Yakutian Mammoths’ Tusks in Late Pleistocene by Data of Isotopic and Geochemical Investigations

Abstract: Ключевые слова: мамонты, геохимические исследования, поздний плейстоцен, Якутия, стабильные изотопы углерода.Аннотация. Среди остатков позднеплейстоценовых млекопитающих, собранных на побережье моря Лаптевых, присутствуют бивни шерстистого мамонта (Mammuthus primigenius) с патологиями. Был проведен анализ изотопного состава углерода из их костного карбонат гидроксилапатита, а также геохимические исследования вещества таких бивней (35 элементов, всего 38 образцов) рентгенофлюоресцентным методом. Выявлены сущест… Show more

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Cited by 3 publications
(2 citation statements)
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“…The number of species inhabiting the biosphere periodically dramatically decreased against the background of a general growth trend. There are more than a dozen hypotheses to explain this, which consider phenomena of a very different nature as the main cause, namely: cosmic catastrophes (first of all, the fall of large meteorites, other phenomena of cosmic origin); supervolcano eruptions; trap magmatism; climate changes (glacial cycles or even temperature increases critical for certain species [1]); changes in the level of the World Ocean; changes in the chemistry of the atmosphere and oceans (including changes in the atmospheric oxygen level); changes in Earth's magnetic field (periodic exchange of the south and north poles [2]); genetic problems (in particular, genetic diversity loss, diseases, such as osteoporosis in extinct mammoths [3]); and even the anthropogenic factor, despite its "biospheric youth. " However, none of these hypotheses is universal; each one explains, as a rule, only one of the extinctions, considering coincidence in time only.…”
Section: Introductionmentioning
confidence: 99%
“…The number of species inhabiting the biosphere periodically dramatically decreased against the background of a general growth trend. There are more than a dozen hypotheses to explain this, which consider phenomena of a very different nature as the main cause, namely: cosmic catastrophes (first of all, the fall of large meteorites, other phenomena of cosmic origin); supervolcano eruptions; trap magmatism; climate changes (glacial cycles or even temperature increases critical for certain species [1]); changes in the level of the World Ocean; changes in the chemistry of the atmosphere and oceans (including changes in the atmospheric oxygen level); changes in Earth's magnetic field (periodic exchange of the south and north poles [2]); genetic problems (in particular, genetic diversity loss, diseases, such as osteoporosis in extinct mammoths [3]); and even the anthropogenic factor, despite its "biospheric youth. " However, none of these hypotheses is universal; each one explains, as a rule, only one of the extinctions, considering coincidence in time only.…”
Section: Introductionmentioning
confidence: 99%
“…However, most of them concern the teeth of a woolly mammoth Mammuthus primigenius Blumenbach, 1799 (Vereshchagin 1960(Vereshchagin , 2002Lister and Bahn 2007, etc.). Some cases of mammoth tusks' disturbances of anlaging and formation and their injuries were described (Vereshchagin 1960;Lister and Bahn 2007;Maschenko et al 2008;Nikolaev et al 2017). Several variations of the cheek teeth abnormality of M. primigenius are known: the changes that have arisen during the forming of the tooth, the formation of separate elements (plates), and the functioning of the teeth (Kirillova 2009).…”
Section: Introductionmentioning
confidence: 99%