EXTINCT ANIMALS 



details it agrees with scorpions (see Fig. 213) 



Fio. 209. — Eurypterus fischeri, a marine Scorpion -like animal 

 from the Silurian rocks of Rootzikul. Half the size of 

 nature. (Cut lent by Macmillan s Co., New York, from 

 Zittel's Palceontology.) 



and differs from crabs. It is the only surviving 

 representative of the aquatic ancestors from 



282 



