230 VERTEBRATES. 



Lambdodus calceolus ST. JOHN & WORTHKN. 



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

 VI, p. 281, pi. v, figs. 5a-c. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone : LaGrange ( Lewis county ). 



Desmiodus? flabellum ST. JOHN & WORTHEN. 



Desmiodus ? flabellum St. John & Worthen, lf-75 : Geol. Sur. Illinois, vol. 

 VI, p. 334, pi. xA, figs. 15a-c. 



Horizon and localities Lower Carboniferous, Keokuk 

 limestone : Boonville. 



Desmiodus? ligoniformis ST. JOHN & WORTHEN. 



Desmiodus? ligoniformis St. John & Worthen, 1875: Geol. Sur. Illinois, 

 vol. VI, p. 342, pi. xA, figa. 12a-c. 



Horizon and localities Lower Carboniferous, Keokuk 

 limestone : Boonville. 



Desmiodus costelliferus ST. JOHN & WORTHEN. 



Desmiodus costelliferus St. John & Worthen, 1875: Geol. Sur. Illinois, vol. 

 VI, p. 341, pi. xA, figs. lOa-d. 



Horizon and localities. Lower Carboniferous, Saint Louis 

 limestone : Saint Louis. 



Desmiodus tumidus Sr. JOHN & WORTHEN. 



Desmiodus tumidus St. John & Worthen, 1875 : Geol. Sur. Illinois, vol. VI, 

 p. 339, pi. xA, figs. 7a-d. 



Horizon and localities. Lower Carboniferous, Saint Louis 

 limestone : Saint Louis. 



Venustodus tenuicristatus ST. JOHN & WORTHEN. 



Venustodas tenuicristatus St. John & Worthen, 1875 : Geol. Sur Illinois, vol. 

 IV, p. 348, pi. ix, figs. 19a-c. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone: St. Francisville ( Clark county), Boonville (Cooper 

 county ). 



