Ceratophyllum demersum – Wikimedia Commons

https://commons.wikimedia.org/wiki/Ceratophyllum_demersum?uselang=de

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Category:Anthocerotophyta – Wikimedia Commons

https://commons.wikimedia.org/wiki/Category:Anthocerotophyta?uselang=de

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https://portal.dnb.de/opac.htm?method=simpleSearch&query=129115290

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Paleobotany: The Biology and Evolution of Fossil Plants - Edith L. Taylor, Thomas N. Taylor, Michael Krings - Google Books

https://books.google.de/books?id=_29tNNeQKeMC

This book provides up-to-date coverage of fossil plants from Precambrian life to flowering plants, including fungi and algae. It begins with a discussion of geologic time, how organisms are preserved in the rock record, and how organisms are studied and…

Anhang II

http://www.weloennig.de/feste_Grenzen.html

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