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ISSN 打印: 1521-9429

ISSN 在线: 1940-4328

SJR: 0.168 SNIP: 0.377 CiteScore™:: 0.6 H-Index: 11

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Morphology of new freshwater species of the genus Actinocyclus Ehrenberg (Bacillariophyta) from the Upper Miocene sediments of Lake Baikal, Siberia

卷 8, 册 2, 2006, pp. 200-210
DOI: 10.1615/InterJAlgae.v8.i2.70
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摘要

Four new species of the genus Actinocyclus Ehrenberg, studied in light (LM) and scanning electron microscope (SEM), are described from the Upper Miocene sediments of the BDP-98 drill core, Lake Baikal. They are distinguished by the different structure of rimoportulae, different forms of spines, and the density of their placement on the valve face/mantle junction. The morphological peculiarities of known fossil freshwater species of Actinocyclus krasskei are marked.

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