Halysites
Fossil
Also called Chain coral
About it
Colonial coral whose oval tubes join edge to edge in winding chains, like links seen end on. Common in Silurian limestones of the Great Lakes region, Gotland in Sweden, and Britain.
- Type
- Fossil (coral)
- Group
- Tabulate coral (coral)
- Colours
- grey, tan, brown, white
- Transparency
- opaque
- Periods
- Ordovician, Silurian
Typical values: real specimens vary. For more, see mindat.org.