82 
ON THE GEOLOGY AND NATURAL HISTORY 
CATALOGUE OF CRETACEOUS FOSSILS, continued. 
Formations in ascending order. 
1 
2 
3 
4 
5 
Ammonites Halli, M. & H. March 1856, Pr. Acad. Nat. Sci. Phil. 70, 
Ammonites placenta, Dekay, 1827, New York Lyc. Nat. ii, pi. 5, fig. 2. (Non 
* 
A. •placenta Leckenby, 1858.) . 
* 
* 
Ammonites placenta, var. intercalaris , M. & H. Pr. Acad. Nat. Sci. Phil. 177, 
* 
Ammonites lob at us, Tuomey, 1854, Pr. Acad. Nat. Sci. Phil, vii, 168, . 
Ammonites lenticularis, Owen, 1852. Report Iowa, Wiscon. and Min. tab. 8, fig. 
■X 
5. (Non A. lenticularis of Phillips, 1825.) 
Scaphites Mandanensis, Morton sp. 
Ammonites Mandanensis , Morton, 1841, Jour. Acad. Nat. Sci. Phil, viii, 208, pi. 
* 
H), fig.2. 
Scaphites Mandanensis, Meek & Hayden, Nov. 1836, Pr. Acad. Nat. Sci. Phil. 
281. 
Scaphites abyssinus, Morton sp. ........ 
Scaphites Mandanensis ? Meek & Hayden, Nov. 1836, Pr. Acad. Nat. Sci. Phil. 
* 
281. 
Scaphites C h e y e n n e n s i s, Owen sp. ........ 
Ammonites Nebrascensis, Owen, 1852. Report Wise. Iowa and Min. pi. vii, fig. 2. 
Ammonites Clieyennensis, Owen, “ “ “ pi. viii, fig. 2. 
Ammonites Moreauensis, Owen, “ “ “ pi. viii, fig. 2. 
Scaphites Conradi (pars) Meek & Hayden, Nov. 1856, Pr. Acad. Nat. Sci. Phil. 
* 
281. 
Scaphites Conradi, Morton sp. . . . . . . 
Ammonites Conradi, Morton, 1834, Synop. Org. Rem. 39. pi. xvi, fig. 1, 2, 3. 
Ammonites Dance, d’Orbigny, 1850, Prodrom. de Palmont. ii, 213. 
X- 
Scaphites Conradi, d’Orbigny, 1850, “ “ 214. 
Scaphites Conradi, var. gidosus, Morton, sp., . 
Ammonites var. gxdosus, Morton, 1854, Synopsis Org. Rem. 39, pi. xvi, fig. 2. 
* 
Scaphites N i c o 1 e t i i, Morton sp. 
Ammonites Nicoletii, Morton, 1841, Jour. Ac. Nat. Sci. Phil, viii, pi. x, fig. 3. 
Scaphites comprimus (. ? ), Owen, Report Wiscon. Iowa and Min. tab. vii, fig. 4. 
Scaphites Nicoletii, Meek & Hayden, Nov. 1856, Proc. Acad. Nat. Sci. Phil. 281. 
* 
•X 
Scaphites (Ammonites?) nodosus, Owen, 1852, Report Iowa, Wiscon. and 
Min. 581, tab. viii, fig. 4, .......... 
Scaphites nodosus var. p 1 e n u s, M. & H. May 1860, Pr. Acad. Nat. Sci. Phil. 
* 
177,... 
* 
Scaphites nodosus var. brevis, Meek & Hayden (MSS.) .... 
* 
Scaphites nodosus var. quadrangulus, Meek & Hayden (MSS.) 
* 
Scaphites n o d o s u s var. e x i 1 i s, Meek & Hayden, ...... 
Scaphites larvaeformis, M. & H. March 1856, Pr. Acad. Nat. Sci. Phil. 58, . 
* 
* 
Scaphites Warreni, M. & H. May 1860, Pr. Acad. Nat. Sci. Phil. 177, . 
Ancyloceras ? uncus, Meek & Hayden, ........ 
Ancyloceras ( Hamites ) uncus, M. & H. Pr. Acad. Nat. Sci. Phil. 56. 
* 
Helicoceras M o r t o n i, Hall & Meek sp. ....... 
Hamites Mortoni, Hall & Meek, 1854, Mem. Am. Acad. Arts and Sci. v. N. S. 
•X 
pi. iv, fig. 3. 
