4i8 



NORTH AMERICAN INDEX FOSSILS. 



Coal Measures, especially in the T^Iazon Creek beds of Illinois. 

 Here occurs the primitive caterpillar-like Palaeocampa anthrax 

 Meek and Worthen (Fig. 1719), the only representative of the 

 Protosyngnatha, while the Archipolypoda are represented by a 



Fig. 1 721 



Euphoberia granosa. A nearly complete individual, showing both legs 

 (above) and spines, X 2. (After Scudder. ) 







yX'^'- 



Fig. 1722. Myriopods from the coal measures : (i) Amynilispes wortheni, dorsal 

 view, X f > (2) dorsolateral view of same, X f '■> (S) lateral view of same, X | > (4) 

 view of rock mold of the same, X f > (5) -Eileticus anthracimis, anterior portion of 

 figure 6 enlarged, X^; (6) entire specimen, X /^ > (7) Euphoberia armigera, 

 anterior portion showing head and antennae, X f > and the succeeding segments of 

 anterior part of body, X f > front segment of less magnified part, same as hinder seg- 

 ment of more magnified part ; (8) segments from stouter part of body of same showing 

 spines, legs and stigmata, X 2 ; (9) Amynilispes wortheni^ front spine of specimen, 

 Figs. 1-3, X 2. 



