368 



Trans. Acad. Sci. of St. Louis. 



DISTRIBUTION OF UPPER FAUNAS AT LOUISIANA. — Continued. 



SPECIES. 



Lower 

 Burlington. 



13 14 



15 16 17 



<u to 



18 19 20 



Oapulus paralius (Keyes) 



Capulus obliqnus (Keyes) 



Capulus tribulosus (White) 



Orothonychia forniosas (Keyes) 



Pleurotomaria subcarbonaria, Keyes 



Pleurotomaria sp? 



Pleurotomaria sp? 



Holopea conica, Winchell 



Porcellia nodosa. Hall 



Crytoceras ep?. 



(roniatitee sp? 



Gonlatiies osagensis. Swallow 



Nautilus sp? 



Orthoceras sp? 



Avlculopecten burlingtonensls, Meek 



& \\ orthen 



Aviculopecten circulus, Shumard 



Cardiopsis sp 



Conocardium sp? 



Crenlpecten sp? 



Cyprlcardella sp? 



Edmondia burlingtonensls. White and 



Whitfield 



Edmondia nuptialis, Winchell 



Nuculites sp? 



Sanguinolites burlingtonensls, Wor- 



then 



Sphenotus sp? 



Lithophaga occidentalis (White and 



Whitfield) 



Phlllipsia inslgnis, Winchell 



Phlllipsia tuberculata. Meek and 



Worthen 



Phlllipsia sp? 





X X 



The most striking; features in the vertical distribution of the 

 fossils shown in the tables given are: (1) The upper fauna 

 nowhere extends beneath the base of the Chouteau (No. 12), 

 and the lower fauna nowhere rises above the same line; (2) 

 the species belon^^ing to the fauna beginning in the Chouteau 

 extend upward into the Burlington; (3) while in the Bur- 

 lington many new forms appear, there is not an immediate 

 replacement of the older forms; and (4) the many new 

 species which appear in the second bed of the Burlington 

 (No. 14) are largely so-called Kinderhook forms, not alto- 

 gether from the Chouteau of the immediate neighborhood but 

 from the limestones which occur just beneath the Burlington 

 limestones in other localities, as at the city of Burlington. 



