OP THE UPPER MISSOURI. 
85 
CATALOGUE OF CRETACEOUS FOSSILS, continued. 
Formations in ascending order. 
1 
2 
3 
4 
5 
APORRHAIDiE. 
Aporrliais Americana, Evans & Shumard sp. ..... 
Rostellaria Americana, E. & S. 1857, Trans. St. Louis Acad. Sci. i, 42. 
•X- 
Aporrhais N e b r a s c e n s i s, Evans & Shumard, sp.. ..... 
Rostellaria Nebrascensis , E. & S. Aug. 1854, Pr. Acad. Nat. Sci. Pliila. 164. 
Aporrhais sublevata, M. & H. May 1860, “ “ 178, 
-X- 
■X- 
Aporrhais biangulata, Meek & Hayden, ....... 
Rostellaria biangulata , M. & H. March 1856, Pr. Acad. Nat. Sci. Phila. 65. 
•X" 
Aporrhais biangidata , M. & H. May I860, “ “ 185. 
Aporrhais p a r v a, M. & H. “ “ “ 118, 
* 
LITORINIDiE. 
Fossar? N ebrasceusis, Meek & Hayden, ....... 
Natica ambigua , M. & H. March 1856, Pr. Acad. Nat. Sci. Phila. 66. 
(Non Fossar ambiguus, Lin. sp.) 
NERITOPSID2E. 
Neritopsis ? Tuomeyana, Meek & Hayden,. 
Natica Tuomeyana , M. & H. Nov. 1856, Pr. Acad. Nat. Sci. Phila. 270. 
•X* 
TROCHIDH3. 
Margarita Nebrascensis, Meek & Hayden, ....... 
Turbo Nebrascensis, M. & H. March 1856, Pr. Acad. Nat. Sci. Phila. 64. 
Margarita Nebrascensis, M. & H. May 1860, “ “ 185. 
* 
*Margaritella fl exi s triata, Evaus & Shumard, sp. ..... 
Solarium fiexistriatum, E. & S. Aug. 1854, Pr. Acad. Nat. Sci. Phila. 163. 
■X - 
DENTALIADiE. 
Dentalium gracile, H. & M. 1854, Mem. Am. Acad. Arts, and Sci. Boston, v, 
N. S. pi. iii, fig. 11, ........... 
Dentalium pauper culum, M. & H. May 1860, Pr. Acad. Nat. Sci. Phila. 178, 
-X- 
-X- 
TECTURID2E. 
Tectura occidentalis, Hall & Meek, sp. ...... 
Capulus occidentalis , H. & M. 1854, Mem. Am. Acad. Sci. and Arts, Boston, v, 
N. S. p. 385, fig. 13. 
Tectura ? p a r v a, Meek & Hayden. (MS.). 
Tectura? papillata, Meek & Hayden, ........ 
Capulus fragilis, M. & H. March 1856, Pr. Acad. Nat. Sci. Phila. 68. 
(Non Tectura fragilis, Gray & Gamard.) 
• 
■X" 
■X - 
X- 
Anisomyon borealis, Morton sp. ........ 
■X* 
Ilipponyx borealis, Morton, 1842, Jour. Ac. Nat. Sci. Phila. viii, pi. xi, fig. 6. 
Uelcion carinatus, M. & H. March 1856, Pr. Acad. Nat. Sci. Phila. 68. 
Anisomyon borealis, M. & H. Jan. 1860, Am. Jour. Sci. xxviii, 2d ser. 35. 
Anisomyon Shumard i, Meek & Hayden. (MS.) ...... 
•X- 
Anisomyon patelliformis, Meek & Hayden, ...... 
Uelcion patelliformis, M. & H. March 1856, Pr. Acad. Nat. Sci. Phila. 68. 
* 
