Sigillaria laevigata

Cladus: Eukaryota
Regnum: Plantae
Subdivisio: Lycopodiophyta
Classis: Lycopodiopsida
Order: Lycopodiales
Familia: Lepidodendraceae
Genus: Sigillaria
Species: S. laevigata

Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License