How diverse were ferns in the Baltic amber forest?
Eva-Maria Sadowski, Leyla J. Seyfullah, Ledis Regalado, Laura E. Skadell, Alexander Gehler, Carsten Gröhn, Christel Hoffeins, Hans Werner Hoffeins, Christian Neumann, Harald Schneider, and Alexander R. Schmidt
Journal of Systematics and Evolution
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2019, (4): 305
-328
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DOI: 10.1111/jse.12501
