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Erster Nachweis fossiler Ciliaten


, : Erster Nachweis fossiler Ciliaten. Palaeontologische Zeitschrift. Marz; 681-2: 17-31

The first finds of fossil ciliates from the Lower Triassic (Upper Spathian) of Spitsbergen are described. The original pseudochitin of the ciliate tests is preserved because of replacement by apatite during a very early diagenetic stage. The fossil forms (Triadopercularia spitzbergensis n. g. n. sp., and Triacola ostracodarum n. g. n. sp.) belong to the ciliate order Peritrichida (Sessilia), and, from the morphology of theirs tests, can be placed within Recent families. The preservation of these tiny delicate fossils is explained by their particular micro-environment, which resulted in rapid transportation to the sea floor. The ciliates had lived symphoriontic within scavenging ostracodes in a decaying ammonoid and have been phosphatized together within their hosts.

US$19.90

DOI: 10.1007/bf02989430


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