| Graptolithina
Orthograptus
Inv. no. | p4531 | Taxonomy | Kmen: Hemichordata / Třída: Graptolithina / Rod: Orthograptus | Description | | Chronostratigraphy | paleozoikum - silur - llandovery |
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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]