Upper Silurian
Onondaga Period Eurypterid
length up to 20" p. 556
Upper Silurian
Onondaga Period
Arachnid Scorpion
Proscorpius
c. 2" length p. 557
Upper Silurian Onondaga Period Eurypterid length up to 20" p. 556 |
Upper Silurian Onondaga Period Arachnid Scorpion Proscorpius c. 2" length p. 557 |