#horsetail

[transparentfossil]

3.25" Fossil Horsetail (Annularia) Nodule Pos/Neg - Mazon Creek

[knuppitalism-with-ue]

Here the result of the Seaham Formation #paleostream, maybe the most relaxing formation stream we will ever have! This Carboniferous tundra wasn't chosen because of it's fossils, but because of its setting.

Seaham was deposited in the neighborhood of a glacier, with volcanoes near by. Such a visual is totally foreign to most people when they think about the Carboniferous, the time of the tropical coal swamps, and that's why this formation made it into our selection.

There is a number of different formations in New South Wales that preserve evidence of the Carboniferous glaciation The trails of these glaciers can be observed to this day in the local geology.

But Seaham not only shows the presence of glaciers but also preserves the soil that formed in it's vicinity. The paleosols recorded here are very similar to modern day tundra soils, with wetter and dryer types found throughout the formation. There is even evidence...

...of little ice domes forming under these cold conditions. These more hilly, dryer areas were mostly inhabited by the "seed fern" Botrychiopsis while the wetter parts were full of horsetails of the genus Dichophyllites. Only trace fossils hint at the presence of insects.

Hopefully future discoveries will add more to this image.

[magicalmoon989]

Equisetum telmateia, the great horsetail, is a species of Equisetum (horsetail) native to Europe, western Asia and northwest Africa. It was formerly widely treated in a broader sense including a subspecies (subsp. braunii) in western North America, but this is now treated as a separate species, Equisetum braunii.

In addition, any giant member of the Equisetopsida (horsetails and their prehistoric relatives) is liable to be called "giant horsetail" even though they are not true horsetails. Most often, the term "giant horsetail" in this somewhat inaccurate sense refers to Calamitaceae in Paleozoic contexts; in the Mesozoic, the term usually refers to the Equisetites assemblage.

The oldest known fossil of giant horsetail dates from Miocene epoch and is found in Ñirihuau Formation in Patagonia.

[rochnan]

Butterfly!

The painting is done! I'm very happy with how it turned out. It's very cute 😁 It's also in 16:9 format, so guess what my new desktop background is 😆 Feel free to use it if you like it (it's 1920x1080)

And look! I wrote down my references so I can find them again when I need them. I should do that more often.

[rumeko]

luck

慧眼

[kristo-flowers]

Great horsetail

[almondrootwc]

the creatures

poorly designed ctenospondylus/sphenacodon gibby with a wayne diplocaulus and an inostrancevia

permian lovelies

[warizoh]