Specimen #3

Color: black

Texture: bumpy on one side

Size: 2 cm

Shape: round and flat

Luster: waxy

Fossil type: cast

I believe this fossil is a trilobite of the species Elrathia kingii because fossilmuseum.net describes the fossil to be dark grey or black, and the picture shown is very similar to my specimen. The size of the specimen is not stated.