372 EXPLORATIONS ACROSS THE GREAT BASIN OF UTAH. 



BakmeUia /, No. L46 Fragments in hard siliceous rock. Timpanogos 



Valley ; latitude 40° 35 ; longitude 111° 30'. 

 BakerelUa parva, Meek and Ilayden Oasts in yellow, impure, magnesian limestone. 



Cottonwood Creek, north of Kansas River, 



Eastern Kansas. 



Lrrfa siihsciiula, Meek and Hayden .. Locality and position same as last. 



f j( > 4 } a } mult. S p Similar to L. bellastriata, Stevens, but much 



smaller. Locality and position same as above- 



GASTEROPODA. 



BeUerophon , undt. sp Near Big Blue River, Eastern Kansas. 



JURASSIC SPECIES. 



ECHTNODERMATA. 

 XAMI— . REMARKS, LOCALITIES, ETC. 



Pentavrinites asteriscus, M. and H., No. 13 East fork of Weber River; latitude 40° 48'; 



longitude 111° 15'. Also on the North Platte, 



near Red Buttes. 

 Prntacrinites , undt., No. 417. Portions of column. Near Red Buttes, North 



Platte; latitude 42° 50' ; longitude 106° 40'. 



LAMELLIBRANCHIATA. 



Ostrea Engclmanni, Meek, No. 93 Near Red Buttes, on North Platte ; latitude 42° 



50'; longitude 100° 40'. 



(iryphva cahrohi, Quenstedt? Locality and position same as above. 



( 'emptonectes beJMstridta, Meek . — Locality and position same as above. 



GASTEROPODA. 



DcntaUum * subqtutrfnttuni. Meek Locality and position same as above. 



CEPHALOPODA. 



Bdemnttes dcnsitu, Meek and Ilayden Locality and position same as above. 



CRETACEOUS SPECIES. 



LAMELLIBRANCHIATA. 



X.VMKS. REMARKS, LOCALITIES, ETC. 



Ostrea congesta, Conrad, No. 85. . . North Platte above the bridge; latitude 42° 50'; 



longitude 106° 30'. No. 3 of the Upper Mis- 

 souri section. 



Ostrea , undt. sp. No. 15G Bear River, near the mouth of Sulphur Creek; 



latitude 41° 12'; longitude 110° 50', from a yel- 

 lowish sandstone. 



Anomia eonctntrica, Meek Locality and position same as last. 



Tnoeeram us , undt. sp This shell seems to be closely allied to a form 



described by Dr. Schiel, in the 2d vol. Pacific 

 Bailroad Reports, under the name I.pseudomyt- 

 iloides. Locality and position same as above. 



Imceramus Simpsoni, Meek, No. 84 North Platte, above bridge; latitude 42° 50 7 ; 



longitude 106° 30'. No. 3 of Upper Mis- 



