Annularia
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Annularia is a form taxon, applied to fossil foliage belonging to extinct plants of the genus Calamites in the order Equisetales.
Specimen of Annularia stellata from Italy on display at the Museo Civico di Storia Naturale di Milano
The foliage of Calamites
Kladno Formation
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The Kladno Formation is a Carboniferous formation in the Czech Republic which preserves a wide array of temnospondyls, lepospondyls and fish, among other fauna.
N. costulatus fossil
P. biornatus fossil
Illustration of a P. lata fossil
Archaeothyris reconstruction