ClipArt ETC
Sigillaria is the generic name assigned to this ancient arborescent lycopod. Occassionally the trunks were smooth. Extinct genus of tree-sized lycopsids from the Carboniferous Period (about 360 to 300 million years ago) that are related to modern club mosses. Sigillaria had a single or sparsely branched trunk characterized by a slender strand of wood and thick bark.

Sigillaria, An Ancient Tree

Sigillaria is the generic name assigned to this ancient arborescent lycopod. Occassionally the trunks…

"a Sigillaria (restored); b leaflet; c & d impressions on bark; e section of stem; f portion of cylinder, magnified." -Taylor, 1904

Sigillaria

"a Sigillaria (restored); b leaflet; c & d impressions on bark; e section of stem; f portion of cylinder,…