PLATE 30 
All specimens coated and magnified x 31.5 
Fic. 1. Gnathodus semiglaber Bischoff 
a. Oral view of specimen X 421. b. Aboral view of specimen X 421. c. Lateral view of 
specimen X 421. 
Fics. 2, 8. Gnathodus punctatus — Gnathodus semiglaber transition 
2. Oral view of specimen X 521. 8. Oral view of specimen X 525. 
Fics. 3, 7, 9-17. Pseudopolygnathus cf. longiposticus Branson & Mehl 
3a. Aboral view of specimen X 443. 3b. Oral view of specimen X 443. 7a. Aboral lateral 
view of specimen X 448. 7b. Oral view of specimen X 448. 9. Aboral view of specimen 
X 442. Io. Oral view of specimen X 442. 11. Oral view of growth stages of specimen X 522. 
12. Oral view of growth stages of specimen X 523. 13. Oral view of growth stages of specimen 
X 433. 14. Oral view of growth stages of specimen X 434. 15. Oral view of growth stages of 
specimen X 547. 16. Oral view of specimen X 449. 17a. Oral view of specimen X 545. 
17b. Aboral view of specimen X 545. 
Fics. 4,5. Gnathodus sp. 
4a. Oral view of specimen X 424. 4b. Aboral view of specimen X 424. 4c. Lateral view of 
specimen X 424. 5a. Aboral view of specimen X 425. 5b. Oral view of specimen X 425. 
5c. Lateral view of specimen X 425. 
Fic. 6. Gnathodus delicatus Branson & Mehl 
a. Oral view of specimen X 426. b. Aboral view of specimen X 426. c. Lateral view of 
specimen X 426. 
Fic. 18. Gnathodus bilineatus (Roundy) transitional from G. punctatus (Cooper) 
a. Oral view of specimen X 439. b. Aboral view of specimen X 439. 
Fic. 19. Pseudopolygnathus triangulus cf. pinnatus Voges 
a. Aboral view of specimen X 502. b. Oral view of specimen X 502. 
