1. Individual species

2. Monuran trackways

3. References

4. External links

• Walchia garnettensis
• Walchia hypnoides
• Walchia piniformis

Walchia is a fossil conifer, cypress-like genus found in upper Pennsylvanian (Carboniferous) and lower Permian (about 310-290 Mya) rocks of Europe and North America. A forest of in-situ Walchia tree-stumps is located on the Northumberland Strait coast at Brule, Nova Scotia.

Besides the Walchia forest, fallen tree trunks, and leaflet impressions, the forest, fossil-rich layer contains numerous, 4-legged, tetrapod fossil trackways.

Individual species

W. hypnoides: from the schists of Lodeve; also copper slates of the Zechstein in Mansfeld.

Monuran trackways

At the same time period of 290 mya, another species was making fossil trackways, now preserved in New Mexico; Walchia leaflets are found in the same fossil layers. The Monuran trackways were made by Permian, wingless insects called monurans, (meaning "one-tail"); the insects' means of locomotion was hopping, then walking.

These 290 mya layers contain footprints of the large Dimetrodon, large/small raindrop impact marks, and also these fossil trackways of insects.

References

External links

General articles

• [https://archive.today/20130201200200/http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V6W-45PTTH7-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=68cccc3a559630cc4ea61f58b8d00ee0 Chemosystematic and microstructural investigations--(including Walchia)]
• [https://books.google.com/books?id=g04-0wFBOEUC&pg=PA178&lpg=PA178&dq=walchia+conifer&source=web&ots=LbbQFLbxF7&sig=HRHuQ3tZohwLQC5Iwdb-zVns7PU Book preview-(1854)--W. hypnoides discussion]

Walchia Fossil examples

• Graphic of W. piniformis branchlets, from James D. Dana, "Manual of Geology"  
• [https://web.archive.org/web/20081012121659/http://www.news.ucdavis.edu/photos_images/news_images/01_2007/Walchia_lg.jpg Photo-High Res]; Article – www.news.ucdavis.edu--"A Bumpy Shift from Icehouse to Greenhouse", Fossil from Smithsonian. Walchia went from the 'Uplands' to the lower basins-(floodplain forest region of Brule, Nova Scotia).
• Photo-High Res--4 cm width Leaflet-(Order Voltziales); Article – www.colby.edu-"Carboniferous Paleoecological Scenarios"

Walchia fossils, with Monuran trackways

• [https://web.archive.org/web/20071225141508/http://www.hmnh.org/archives/category/paleozoic/ "The Footfalls and Bellyflops of Permian Insects"] – (from the Robledo Mountains of New Mexico)

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