SIGILARIA:
Sigillaria is an extinct genus of large, tree-like plants that existed
during the Carboniferous period, approximately 359 to 299 million years ago.
These plants were part of the ancient group of plants known as lycophytes and
are related to modern-day clubmosses. Sigillaria was a genus of tree-like,
lycophyte plants that were a prominent component of Carboniferous coal-forming
forests. Their segmented trunks, spiral arrangement of leaves, and spore-based
reproduction are characteristic features that distinguish them in the fossil
record and help scientists understand ancient terrestrial ecosystems.
