OF THE UPPER MISSOURI. 
CATALOGUE OF CRETACEOUS FOSSILS, continued. 
83 
Helicoceras posmirer M. & H. March 1858, Pr. Acad. Nat. Sci. Phil. 56. 
Helicoceras coc hleatum, Meek and Hayden, 
Turrilites (iteeeires} cochleatus, M. & iL Maxck 1858, re, tind. Nat. Sei. 
Phil. 55. 
Helicoceras cochleatum, M. & H. May 1860, Pr. Acad. Nat. Sci. Phil. 185. 
Helicoceras Ne brascense, Meek & Hayden ‘ 
Ancyloceras ? Nebrascensis, M. & H. March 1856, iy A Acad Nat _ “Phil. 71. 
Turrilites Nebrascensis, M. & H. Nov. 1856, 280. 
Helicoceras tortum, M. & H. March 1858, 
Helicoceras Che yennense, Meek & Hayden ° 
Ancyloceras ? Cheyennense, M. & H. March 1856, Pr. Acad. N a Sci. Phil. ge 
‘Turrilites Cheyennensis, M. & H. Nov. 1856, 
Helicoceras angulatum, M. & H. May 1860, ce “ et 
Helicoceras umbilicatum, Meek & Ha 
Turrilites ? umbilicatus, M & H. March 1858, Pr, Acad. Nat. Sci. Phil. 56. 
Helicoceras umbilicatum, M. & H. May 1860, i ee 185, 
Ptychoceras Mortoni, M. & H. May 1857, = ct 134, 
Baculites ovatus, Say, Jour. Acad. Nat. Sci. Phil. vi, pl. v, fig. 5, 6, 
Baculites eae Hall & Meek, 1854, Mem. Am. Acad. Arts and Sci. pera) 
Vv, 02, 
Baculites as peroi ‘ac es, Meck & fe as (ass. ) 
Baculites , Say, Am. Jour. Sci. ii, 41, . ‘ ra . 
Aptychus Cheyennensis, Meek & Hayden. (MSS.) . . «. « . 
Aptychus fragilis, Meek & Hayden. (MSS.) . . «© «© « 
“ “ 54, a 
GASTEROPODA. 
MURICID A. 
or a” D pol yas M. & H. March 1856, Pr. Acad. Nat. Sci. 
Pa Oi ?) Newbersys ML & " March 1857, me pers Nat. Sci. 
faa. oe M. & H. iy 1857, Py. Acad ‘Nat Sei Phil, 139, . Sees 
Fusus intertextus, M. & H. - 2: 139, . . 
Fusus? flexicostatus, M. & H. March 1856, “ : 66,. 
Fusus Vaughani, M. & H. May veal “f - 139,. + 
Fusus yineulum, Hall & Meek Sp.) _ 
Buccinum ? vinculum, H. & M. Mem. Avail se an dvi, Boise,’ v, N. s. ot 
ili, fig. 5. 
Fusus vinculum, M. & H. May 1860, Pr. Acad. Nat. Sci. Phil. 183. 
Fusus Scarborou ghi, M. & H. May 1857, Pr. Acad. Nat. Sci. Phil. 139, 
Fusus Culbertson i, M. & H. March 1856, Pr. Acad. Nat. Sci. Phil. 66, 
Fusis Haydeni, Evans & Shumard, 1857, Trans. Acad. Sci. St. Louis, 41. 
Fusus Galpinanus, M. & H. March 1856, Pr. Acad. Nat. Sci. Phil. 65, 
Formations in ascending order. | 
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