CHITIN PRESERVATION IN QUATERNARY COLEOPTERA - PRELIMINARY-RESULTS
CHITIN PRESERVATION IN QUATERNARY COLEOPTERA - PRELIMINARY-RESULTS
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DOI：
10.1016/0031-0182(93)90139-a
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发表时间：
1993-08-01
影响因子：
3
通讯作者：
JEUNIAUX, C
中科院分区：
文献类型：
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作者：
MILLER, RF;VOSSFOUCART, MF;JEUNIAUX, C
虽然已知许多生物化石都有几丁质外骨骼，但有关化石中几丁质保存的信息相互矛盾。节肢动物，特别是昆虫，在新生代沉积物中相对常见，并提供有用的古环境信息。现代和化石节肢动物甲壳素的化学实验研究表明，它可能保持足够的稳定，古生态和古气候信息来自稳定同位素分析。这种技术可能适用于广泛的几丁质化石。对晚冰期和末次间冰期沉积物中第四纪鞘翅目昆虫的分析表明，甲壳素占甲虫化石碎片干重的10-30%。这些数量代表了一系列现代昆虫报告的几丁质量的一半至四分之三（25-40%）。甲壳质的保存丰富和质量对古昆虫学研究具有重要意义。
Although many fossil organisms are known to have had chitinous exoskeletons, there is conflicting information concerning chitin preservation in fossils. Remains of arthropods, particularly insects, are relatively common in Cenozoic deposits and provide useful paleoenvironmental information. Experimental studies on the chemistry of modem and fossil arthropod chitin suggest that it may remain sufficiently stable for paleoecologic and paleoclimatic information to be derived from stable isotope analysis. Such techniques might be applied to a wide range of chitinous fossils. Analyses of Quaternary Coleoptera from late-glacial and last interglacial deposits indicate that chitin comprises 10-30% of the dry weight of fossil beetle fragments. These amounts represent half to three-quarters of the amount of chitin reported for a range of modern insects (25-40%). The abundance and quality of chitin preservation has important implications for paleoentomological research.