Brachiopod
Fossil
Also called Lamp shell
About it
Two-shelled sea animals whose valves differ in size and shape, though each valve is symmetrical down its middle, the reverse of a clam. Among the commonest Paleozoic fossils, abundant in Ordovician to Permian rocks.
- Type
- Fossil (brachiopod)
- Group
- Brachiopod
- Colours
- grey, brown, tan, cream, white
- Transparency
- opaque
- Periods
- Ordovician, Silurian, Devonian, Carboniferous, Permian
Typical values: real specimens vary. For more, see mindat.org.