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In #Carboniferous, global #forests appeared, covering #tropical zones with tree-high #horsetails, #clubmosses, and #ferns. #Oxygen levels rose, and #CO2 was bound for transforming peat into lignite and #bituminous #coal. The climate later became colder i.a. due to the decreasing greenhouse gas leading to the Permo-Carboniferous Ice Age period.
©#StefanFWirth

#Photos
©S.F.Wirth

29-Oct-2025
study uses ancient plant to decode #Earth's #climate history
the study focuses on #horsetails — hollow-stemmed #plants that have thrived on Earth for more than 400 million years. The team’s findings reveal that #water traveling through these plants undergoes such intense natural #distillation that its #oxygen #isotope ratios resemble those found in meteorites or in extraterrestrial materials.

https://www.eurekalert.org/news-releases/1103877

#science #evolution #paleontology

Preparing some herbarium sheets for display in our new dinosaur gallery. All of these plant groups – a fern, cycad, and horsetails – were around during dinosaur times.

Installation of this new gallery has been a little delayed but we're planning to open in October if all goes to plan.

#NottNatHist #plants #leaves #herbarium #museum #display #ferns #horsetails #cycads #WollatonHall #botany

Really quite impressive thicket of Great Horsetail (Equisetum telmateia) in this railway siding at Three Bridges. Fairly easy to ID even at a distance because it’s biiiig (1 metre tall or more) and has very pale, almost white jointed stems.

#Equisetum #VC13 #WestSussex #Crawley #ferns #horsetails

Eiliseltä pyörälenkiltä Mätäjoen/Mätäojan varrelta. Puusillan molemmin puolin kasvoivat kortteet korkeina. Kiehtovia, ikivanhoja kasveja, dinosaurusten ajoilta peräisin.

From my bike ride yesterday along the Mätäjoki/Mätäoja river. The wooden bridge was flanked on both sides by high-growing horsetails. Fascinating plants, ancient, from the days of the dinosaurs.
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#luontokuvaus #naturephotography #vihreää #green #kortteet #horsetails #SilentSunday

I got to make a fun dino animation for the Zoological Museum of the University of Zurich! https://youtu.be/Sm2kh_VQv9s

#handmade #stopMotion #stopMotionAnimation #exhibits #paperanimation #Uzh #Dinos #dinosaurs #Museums #museum #animation #magpie #allosaurus #horsetails #ginko #fossil #puppet

Field Horsetail (Equisetum arvense) grows fertile shoots in early spring and the typical non-fertile, many-branched green stalks later in the year.

#Equisetum #Horsetails #Wetlands