PLATE 18 
All specimens coated and magnified x 31.5 
Fics. I, 10, 11. Gnathodus punctatus (Cooper) 
1a. Aboral view of specimen X 132. 1b. Oral view of specimen X 132. Ic. Outer lateral 
view of specimen X 132. tIoa. Aboral view of specimen X 131. tob. Oral view of specimen 
X 131. toc. Inner lateral view of specimen X 131. trod. Outer lateral view of specimen 
X 131. 11a. Aboral view of specimen X 133. 11b. Oral view of specimen X 133. 11c. Inner 
lateral view of specimen X 133. 11d. Outer lateral view of specimen X 133. 
Fics. 2-5. Gnathodus simplicatus sp. nov. 
2a. Aboral view of holotype X 89. 2b. Oral view of holotype X 89. 2c. Lateral view of 
holotype X 89. 3a. Lateral view of paratype X 91. 3b. Oral view of paratype X 91. 4a 
Lateral view of paratype X 90. 4b. Oral view of paratype X90. 5a. Lateral view of 
paratype X 415. 5b. Oral view of paratype X 415. 
Fics. 6, 8, 13. Gnathodus antetexanus Rexroad & Scott 
6a. Aboral view of specimen X 412. 6b. Oral view of specimen X 412. 6c. Outer lateral 
view ofspecimen X 412. 8a. Outer lateral view of specimen X 413. 8b. Oral view of specimen 
X 413. 13a. Aboral view of specimen X 414. 13b. Oral view of specimen X 414. 13c. Outer 
lateral view of specimen X 414. 13d. Inner lateral view of specimen X 414. 
Fic. 7. Gnathodus ? sp. nov. 
a. Aboral view of specimen X 92. b. Oral view of specimen X 92. c. Outer lateral view of 
specimen X 92. 
Fic. 9. Gnathodus avonensis sp. nov. 
a. Aboral view of holotype X 411. b. Oral view of holotype X 411. c. Lateral view of 
holotype X 411. d. Lateral view of holotype X 411. 
Fic. 12. Gnathodus delicatus Branson & Mehl 
a. Aboral view of specimen X 87. b. Oral view of specimen X 87. c. Inner lateral view of 
specimen X 87. d. Outer lateral view of specimen X 87. 
Fics. 14-17. Gnathodus bilineatus (Roundy) 
14a. Aboral view of specimen X 94. 14b. Oral view of specimen X 94. 14c. Outer lateral 
view of specimen X94. 14d. Inner lateral view of specimen X94. 15a. Aboral view of 
specimen X 93. 15b. Oral view of specimen X 93. 15c. Inner lateral view of specimen X 93. 
15d. Outer lateral view of specimen X 93. 16a. Aboral view of specimen X 417. 16b. Oral 
view of specimen X 417. 16c. Inner lateral view of specimen X 417. 16d. Outer lateral view 
of specimen X 417. 17a. Aboral view of specimen X 416. 17b. Oral view of specimen 
X 416. 17c. Inner lateral view of specimen X 416. 17d. Outer lateral view of specimen 
X 416. 
