A Fossilized Microcenosis In Triassic Amber |
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Authors: | WILFRIED SCHÖ NBORN,HEINRICH DÖ RFELT,WILHELM FOISSNER,LOTHAR KRIENITZ,URSULA SCHÄ FER |
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Affiliation: | Friedrich-Schiller-Universität Jena, Institut für Ökologie, Arbeitsgruppe Limnologie, Winzerlaer Straße 10, D-07745 Jena, Germany,;Friedrich-Schiller-Universität Jena, Institut für Ernährung und Umwelt, Lehrgebiet Landschaftsökologie und Naturschutz, Dornburgerstraße 159, D-07743 Jena, Germany,;Universität Salzburg, Institut für Zoologie, Hellbrunnerstraße 34, A-5020 Salzburg, Austria,;Institut für Gewässerökologie und Binnenfischerei, Alte Fischerhütte 2, D-16775 Neuglobsow, Germany |
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Abstract: | ABSTRACT Detailed data on bacterial and protistan microfossils are presented from a 0.003 mm3 piece of Triassic amber (Schlierseerit, Upper Triassic period, 220-230 million years old). This microcenosis, which actually existed as such within a very small, probably semiaquatic habitat, included the remains of about two bacteria species, four fungi ( Palaeodikaryomyces baueri, Pithomyces -like conidia, capillitium-like hyphae, yeast cells) two euglenoids, two chlamydomonas ( Chlamydomonas sp., Chloromonas sp.), two coccal green microalgae ( Chlorella sp., Choricystis -like cells), one zooflagellate, three testate amoebae ( Centropyxis aculeata var. oblonga-like, Cyclopyxis eurystoma -like, Hyalosphenia baueri n. sp.), seven ciliates ( Pseudoplaryophrya nana -like, Mykophagophrys terricola -like, Cyrtolophosis mucicola -like, Paracondylostoma sp., Bryometopus triquetrus -like. Tetrahymena rostrata -like, Paramecium triassicum n. sp.) the microfossils correspond to or diverge from extant species only slightly. |
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Keywords: | Evolutionary comments fossilized bacteria ciliates flagellates fungi green algae testaceans preservation Schlierseerit |
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