Age: Silurian.
Location: Velykozalissya, Kamianets-Podilski, Ukraine.
Eurypterus is a genus that lived in the Silurian
period, 420 million years ago. The Euryptera is often described as a sea
scorpion as it had a sharp needle on its tail, which it probably used in
combat. However, it is a member of the superclass Merostomata, a group of
arthropods that currently includes only the horseshoe crab and is not directly
related to scorpions, which belong to a different class, the arachnids.
Plate measures: 11,5 cm x 8,3 cm
Eurypterus measures: 6,5 cm x 1,8 cm