47 



List of Fossils j &c. Continued. 

 JURASSIC. 



Name. 



LAMELLIBRANCHIATA. 



Locality. 



Ostrea strigilecula, White Belle Fonrcbe, Sun-Dance Hills, 



and near Beaver Creek. 



Gryphsea calceola var. Nebracensis, M. & H j Big Horn Mountains. 



Pecten Newberryi, n. sp 



Camptonectes bellistriata, Meek ! Belle Fourche. 



extenuatus, M. & H i East of Belle Fourcbe. 



Pseudomonotis (Eumicrotis) curta, Hall ! Two miles south of Belle Fouicbe, 



orbiculata, n. sp Red Water Valley. 



Avicula (Oxytoma) mucronata, M. & H Two miles south of Belle Fourche. 



Ger villia recta, Meek in MS Sun-Dance Hills. 



Grammatodon inornatus, M. & H 



Mytilus White!, n. sp j Sun-Dance Hills. 



Volsella (Modiola) formosa, M. & H i Big Horn Mountains. 



pertennis, M. & H | (September 20.) 



Astarte fragilis, M. & H | Red Water Valley. 



Trapezium bellefourchensis, n. sp j East of Belle Fourche. 



subequalis, n. sp j Red Canon Creek. 



Pleuromya Newtoni, n. sp j Two miles south of Belle Fourche. 



Tancredia ( ?) inornata, M. & H East of Belle Fourche. 



corbuliformis, n. sp Do. 



bulbosa, n. sp Do. 



postica, n.sp Do. 



Warreuana, M. & H I Red Water Valley. 



Dosinia Jurassica, n. sp j East of Belle Fourche, &c. 



Psammobia (?) prematura, n.sp j Do. 



Thracia snblevis, M. & H Red Water Valley. 



Neaera longirostra, n.sp Do. 



Saxicava Jurassica, n. sp Do. 



CEPHALOPODA. 



Ammonites cordiformis, M. & H ! Red Water Valley. 



var. distans | Two miles south of Belle Fourche. 



Belemnites densus, M. &H East of Belle Fourche. 



CRETACEOUS. 



Systematic name. 



Division. 



Locality. 



LAMELLIBRAXCHIATA. 



Cyncyclonema rigida. M. & H 



Pteria linguiformis, Evans & Shurn. .. 



(Oxytoma) Xebrascana, E. & S. 

 (Pseudopteria) tibrosa, M. &H. 



sublse vis, n.sp.. 

 Inoceramus problematicns, Schlott... 



fragilis, H. & M 



altus, Meek 



perplexus, n. sp 



sublsevis, H. & M 



Sagensis, Owen 



No. 4. 

 No. 4. 



No. 4. 

 No. 4. 



No. 4 



Nos.2and3. 

 Nos. 2 and 3. 

 No. 2 



No. 2 



No. 4. . 



No. 4.. 



Forks of the Cheyenne River. 

 Chevenne River, near French 



Creek, &c. 

 Sage Creek. 

 Cheyenne River, near Rapid 



Creek. 



Old Woman's Fork. 

 East Fork of Beaver Creek. 

 Beaver Creek. 

 Belle Fourche, 10 miles west of 



Crow Creek. 

 Belle Fourche, 10 miles west of 



Crow Creek. 

 Forks of the Cheyenne River. 



