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 ing of the Silm-ian 



Scorpion (Palceophonus Scorpion of Gothland 



hunteri), seen from be- (Palceophonus nuncius), 



low, so as to show the seen from above, 

 attachments of the legs. 



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

 These are known as the Eurypterids (Ptery- 

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



278 



