96 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



CONTESTH. 



Page. 



List of wowl-cuts xiii 



List of errata " v 



Letter of Dr. F. V. Hayden xvii 



lutroduftoiy remarks x'x 



Cretaceous formation ^'t' 



Section of Cretaceoii.s foniiatiou on the Missouri xxiii 



General stH'tion of the Crctiiceous rocks of Nebraska xxiv 



Subdivisions of the Upper Missouri undoubted Cretaceous series, and their geographi- 

 cal extension west of the Mississii)pi, individually considered xxvi 



Dakota ;;roup xxvi 



Fort Benton ^roup xxviii 



Niobrara group ^^'^ 



Fort Pierre group xxxiii 



Fox Hills group xxxv 



New Mexican Cretaceous section xxxvii 



Kelatious of the I'pper Missouri Cretaceous beds to those east of the Mississippi xxxviii 



Section of Cretaceon.s rocks of Mississippi xxxviii 



Alabama section xxxix 



New Jersey section xli 



Parallelism of the subdivisions of the Upper Missouri Cretaceous series with those of 



the same in Europe xliii 



Fresh and brackish water lignite deposits of the Upper Missouri xlviii 



Judith River group xlvii 



Section of the Judith River group xlviii 



Fort Union group Iv 



Section of the Fort Union lix 



Tertiary rocks of the Wind River and White River groups Ixi 



Wind River group Ixi 



AVhite River group Ixi 



Section of the White River group Ixii 



Invert-ebrate paheontology 1 



Cretaceous species • ' 



Species of the fresh and brackish water lignite beds 509 



Fossils of the Wind River Tertiary 593 



Fossils of the White River Tertiary 598 



Appendix 607 



CI{ETACEOUS. 



Jiadiata. 

 Polypi. 

 Actinaria. 

 Fungiidai. 



Micrabacia, Edwards & Haime, 1849 1 



JL a7nericana,yi.& H., I860, pi. xxviii, figs. 1 a-d 1-2 



Alcyonaria. 

 Gorgoniidce. 



Websteria, Edwards &. Haime, 1854 2-3 



W.cretacea, Meek, 1864, pi. xxviii, figs. 3 a-c 3-4 



* Microstizia, n. g., Meek, 1876 4 



21. millepunctata, n. s., Meek, 1878, pi. xxviii, figs. 2 a-c 4 



Echiiiodennata. 

 Echinoidea. 

 Spatangidee. 



nemiagter. Desor., 1847 5 



H. humphrcynaniui, M. &. H., 1857, pi. x, figs. 1 a-g 5-6 



MoUusca. 

 Brachiopoda. 

 Lyopomata. 

 Lingulida: 



Lingula, Brugui^e, 1792 7-9 



L.nitida, M. 4: H., 1861, pL xxviii, figs. 18 a, 6 »-10 



' ^iKpo;, small : CTTi^n. puncture. 



