Double fossilization in eukaryotic microorganisms from Lower Cretaceous amber |
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Authors: | Ana Martín-González Jacek Wierzchos Juan-Carlos Gutiérrez Jesús Alonso Carmen Ascaso |
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Institution: | 1. Departamento de Microbiología-III, Facultad de Biología, Universidad Complutense, 28040, Madrid, Spain 2. Centro de Ciencias Medioambientales, CSIC, Serrano 115 bis, 28006, Madrid, Spain 3. Museo de Ciencias Naturales de álava, c/Siervas de Jesús 24, Victoria-Gasteiz, Spain
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Abstract: | Background Microfossils are not only useful for elucidating biological macro- and microevolution but also the biogeochemical history
of our planet. Pyritization is the most important and extensive mode of preservation of animals and especially of plants.
Entrapping in amber, a fossilized resin, is considered an alternative mode of biological preservation. For the first time,
the internal organization of 114-million-year-old microfossils entrapped in Lower Cretaceous amber is described and analyzed,
using adapted scanning electron microscopy in backscattered electron mode in association with energy dispersive X-ray spectroscopy
microanalysis. Double fossilization of several protists included in diverse taxonomical groups and some vegetal debris is
described and analyzed. |
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