Eurypterid

Fossil

Also called Sea scorpion and Eurypterus

About it

Sea scorpions: arthropods with a broad head, paddle-shaped swimming legs, and a long tapering body ending in a spike. Eurypterus remipes from Silurian rock of Herkimer County is New York's state fossil; Ontario and Estonia have them too.

Type
Fossil (arthropod)
Group
Eurypterid (arthropod)
Colours
brown, black, grey
Transparency
opaque
Periods
Silurian, Devonian

Typical values: real specimens vary. For more, see mindat.org.