Sigillaria
Fossil
About it
Giant clubmoss tree whose bark has leaf scars in straight vertical rows along ribs, unlike the spirals of Lepidodendron. Common in coal measures; upright trunks are famous at Joggins, Nova Scotia.
- Type
- Fossil (plant)
- Group
- Lycopsid, giant clubmoss (plant)
- Colours
- grey, black, brown
- Transparency
- opaque
- Periods
- Carboniferous, Permian
Typical values: real specimens vary. For more, see mindat.org.