Materials
- Petrified wood85 objects
- Obsidian10 objects
- Casting plaster7 objects
- Fossil4 objects
- Shell (animal material)4 objects
- Fossilized bone3 objects
- Wood (plant material)2 objects
- Asbestos1 objects
- Faunal remains1 objects
- Flint (rock)1 objects
- Gastropod shell1 objects
- Jasper1 objects
- Organic material1 objects
- Plaster1 objects