Rhynie chert
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The Rhynie chert is a Lower Devonian sedimentary deposit exhibiting extraordinary fossil detail or completeness. It is exposed near the village of Rhynie, Aberdeenshire, Scotland; a second unit, the W
Hand sample of the Rhynie chert from Rhynie, Scotland.
Thin section of a piece of Rhynie chert viewed by transmitted light showing the cross-section of a stem of Rhynia
Reconstruction of Lepidocaris
Reconstruction of Castracollis
Prototaxites
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Prototaxites is an extinct genus of large macroscopic eukaryote dating from the Late Silurian until the Late Devonian periods. Prototaxites formed large trunk-like structures up to 1 metre wide, reach
Rhynie chert
…preserved "loose" in the chert matrix. Their flagellate spores are preserved. The largest organism present in Rhynie was probably a fungus, the enigmatic Prototaxites, growing as a mound a metre or more taller than anything in the community, whose isotopic composition varied like a saprotroph and whose septate pores…
Prototaxites apex
The microstructure of Prototaxites under a light microscope
P. milwaukeensis from Wisconsin
A polished section of Prototaxites sp. at the Royal Tyrrell Museum of Palaeontology