| Title: | Pennsylvanian tree fern compressions |
| Alternate title: | Pennsylvanian tree fern compressions Caulopteris, Megaphyton, and Artisophyton gen. nov. in Illinois |
| Author: | Pfefferkorn, Hermann W. |
| Author: | Illinois State Geological Survey |
| Author: | Illinois. Dept. of Registration and Education |
| Note: | Illinois State Geological Survey, 1976 |
| Link: | page images at HathiTrust |
| No stable link: | This is an uncurated book entry from our extended bookshelves, readable online now but without a stable link here. You should not bookmark this page, but you can request that we add this book to our curated collection, which has stable links. |
| Subject: | Bomen (biologie) |
| Subject: | Ferns, Fossil |
| Subject: | Paleobotany -- Illinois |
| Subject: | Paleobotany -- Pennsylvanian |
| Subject: | Varens |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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