Walchia

Walchia; Temporal range: ~310–290 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	Walchia piniformis
Scientific classification
Kingdom:	Plantae
Division:	Pinophyta
Class:	Pinopsida
Order:	Voltziales
Genus:	Walchia
Species
	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.

Walchia trunk

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.

gollark: I am in fact FINE with the monadoforms!

gollark: Not even that! It just doesn't seem to be able to even have, well, any cool combinators.

gollark: Some offense.

gollark: Anyway, this is not a great game and not λ-calculusy thus I do not like it.

gollark: No, better.

References

External links

General articles

Walchia Fossil examples

Graphic of W. piniformis branchlets, from James D. Dana, "Manual of Geology"
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

"The Footfalls and Bellyflops of Permian Insects" – (from the Robledo Mountains of New Mexico)

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