Sigillaria is a genus of arborescent (wood-producing) lycopsids that are an entirely extinct group of vascular plants. It was a part of a group of plants, called lycopodiophytes (Bateman et al., 1992).
- Bateman, R., DiMichele, W., & Willard, D. (1992). Experimental Cladistic Analysis of Anatomically Preserved Arborescent Lycopsids from the Carboniferous of Euramerica: An Essay on Paleobotanical Phylogenetics. Annals of the Missouri Botanical Garden, Vol. 79(No. 3), 500-559.
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