368 



Trans. Acad. Sci. of St. Louis. 



DISTRIBUTION OF UPPER FAUNAS AT LOUISIANA. — Continued. 



SPECIES. 



Lower 

 Burlington. 





'20 



Capulus paralius (Keyes) 



Capulus obliquus (Keyes) 



Capnlas tribulosus ( YVhlte) 



Orothonychia formoeus (Keyes) 



Pleurotoniaria subcarbonaria, Keyes. . 



Pleurotomaria sp? 



Pleurotomaria sp? 



Holopea conica, Winchell 



Porcellia nodosa, Hall 



Cry toceras sp ? 



Goniatltes sp? 



Gonlatites osagensis, Swallow 



Nautilus sp? 



Orthoceras sp ? 



Avlculopecten burllngtonensis, Meek 



& \V orthen 



Avicnlopecten circulus, Shumard 



Cardlopsis sp 



Conocardium sp? 



Crenlpecten sp? 



Cyprlcardella sp? 



Eduoondia burlingtonensls, White and 



Whitfield 



Edmondia nuptialis, Winchell 



Nucuhtes sp? 



Sanguinolites burlingtonensls, Wor- 



then 



Sphenotus sp? 



Llthophaga occidentalis (White and 



Whitfield) 



Phlllip8ia insignis, Winchell 



Phillipsia tuberculata, Meek and 



Worthen 



Phillipsia sp? 



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 belonging 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. 



