Figs. 5, 5a. LEPETOPSIS sp p. 251 
5, 5a. Two views of an individual referred to this genus. Kessler 
limestone, Station 209. 
Fig. 6. MEEKOSPIRA ? sp p. 240 
6, A nearly complete shell questionably referred to this genus, x2. 
Morrow formation. Station 301. 
Figs. 7, 8. ORTHOCERAS sp. - p. 241 
7, 8. Two fragments of a typical shell. Brentwood limestone. Sta- 
tion 135. 
Fig. 9. STRAPAROLLUS cf. SPERGENENSIS (Hall) -.p. 236 
9. A typical individual thus identified. Morrow formation, Station 
302. 
Figs. lO-lOb. GASTRIOCERAS KESSLERENSE n. sp. p. 242 
10, 10a. Two views of the holotype. 10b. The suture of the same. 
Kessler limestone. Station 209. 
Figs. 11-llb. GASTRIOCERAS PYGMEUM n. sp p. 243 
11, 11a. Two views of one of the cotypes, lib. The suture of the 
same. Brentwood limestone, Station 135. 
Figs. 12, 12a. GASTRIOCERAS BRANNERI Smith p. 242 
12, 12a. Two views of the most complete specimen. Morrow forma- 
tion, Station 296. 
Figs. 13-14a. GRIFFITHIDES MORROWENSIS n. sp p. 244 
13, 13a. Two views of the holotype, a nearly complete cephalon. 
14, 14a. Two views of an associated pygidium. Brentwood limestone, 
Station 210. 
Fig. 15. GRIFFITHIDES ? sp p. 246 
15, The free cheek thus identified. Brentwood limestone. Station 210, 
284 
