CHAPTER XV. 



VERTEBRATES. 



Cladodus elegans NKWBERRY & WORTHEN. 



Cladodus elegans Newberry & Worthen, 1870: Geol. Sur. Illinois, vol. 

 IV, p. 354, pi. iv, tigs. 6-6a. 



Horizon and localities. Lower Carboniferous, Saint Louis 

 limestone : Saint Louis. 



Cladodus ischypus NEWBERRY & WORTHKN. 



Cladodus ischypus Newberry & Worthen, 1870: Geol. Sur. Illinois, vol. 

 IV, p. 354, pi. iv, figs. 6-6a. 



Horizon and localities. Lower Carboniferous, Saint Louis 

 limestone: Saint Louis. 



Cladodus eccentricus ST. JOHN & WORTHEN. 



Clododus eccentricus St. John & Worthen, 1875: Geol. Sur. Illinois, vol. 

 VI, p. 262, pi. iv, figs. 4a-c. 



Horizon and localities. Lower Carboniferous, Saint Louis 

 limestone : Saint Louis. 



Cladodus euglyphens ST. JOHN & WORTHBN. 



Cladodus euglyphens St. John & Worthen, 1875' Geol. Sur. Illinois, vol. 

 VI, p. 274, pi. iv, figs. la-b. 



Horizon and localities Lower Carboniferous, Saint Louis 

 limestone : Saint Louis. 



Lambdodus costatus ST. JOHN & WORTHEN. 



Lambdodus ccstatus St. John & Worthen, 1875 : Geol. Sur. Illinois, vol. VI, 

 p. 280, pi. v, figs. 3a-c. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone : Boonville. 



