Cambrian trilobites as archives for Anthropocene biomarkers and other chemical compounds
نویسندگان
چکیده
منابع مشابه
Humble origins for a successful strategy: complete enrolment in early Cambrian olenellid trilobites.
Trilobites are typified by the behavioural and morphological ability to enrol their bodies, most probably as a defence mechanism against adverse environmental conditions or predators. Although most trilobites could enrol at least partially, there is uncertainty about whether olenellids-among the most phylogenetically and stratigraphically basal representatives-could perform this behaviour becau...
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Secondarily phosphatised olenid trilobites from organic−rich limestones (orsten) in the Furongian (Upper Cambrian) of Västergötland, south−central Sweden, are described and illustrated. All trilobites originate from the Peltura scara− baeoides Zone and were collected on the western slope of Kinnekulle. Only the dorsal exoskeletons have become second− arily phosphatised, and the ventral appendag...
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Analysis of the degree of intraspecific morphological polymorphism during the evolutionary history of trilobites using an informatic approach(1) provides striking evidence of a long-suspected but previously unsubstantiated pattern: degrees of polymorphism are markedly higher in phylogenetically basal, stratigraphically early species. This unequivocal pattern prompts further exploration of the r...
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A review of the progress made in the study of the carcinogenic properties of chemical compounds, incorporating literature published during the triennial period between the First and Second International Cancer Congresses, was presented to the Second International Congress in Brussels, in September 1936, and was subsequently reprinted with an addendum covering most of the literature published up...
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Despite being internal organs, digestive structures are frequently preserved in Cambrian Lagerstätten. However, the reasons for their fossilisation and their biological implications remain to be thoroughly explored. This is particularly true with arthropods--typically the most diverse fossilised organisms in Cambrian ecosystems--where digestive structures represent an as-yet underexploited alte...
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ژورنال
عنوان ژورنال: Anthropocene
سال: 2017
ISSN: 2213-3054
DOI: 10.1016/j.ancene.2017.03.002