EXTINCT ANIMALS 



affinity to modern scorpions, we find in the 

 Silurian and Devonian rocks remains of enor- 

 mous aquatic scorpion-like creatures, sometimes 



Fig. 204. — Completed draw- Fig. 205. — Completed di-aw- 



ing of the Scotch Silurian 

 Scorpion {Palceophonus 

 hunteri), seen from be- 

 low, so as to show the 

 attachments of the legs. 



ing of the Silm'ian 

 Scorpion of Gothland 

 {Palceophonus nuncius), 

 seen from above. 



four or five feet in length (Figs. 207, 208, 209). 

 These are known as the Eurypterids (Ptery- 

 gotus, Stylonurus, Eurypterus, etc.). They had 



278 



