PLATE 9 
All specimens coated and magnified x 31.5 
Fics. 1-4. Pseudopolygnathus nodomarginatus (E. R. Branson) 
1a. Oral view of specimen X 491. 1b. Aboral view of specimen X 491. Ic. Lateral view of 
specimen X 491. 2a. Oral view of specimen X 489. 2b. Aboral view of specimen X 489. 
3c. Lateral view of specimen X 489. 3a. Oral view of specimen X 490. 3b. Aboral view of 
specimen X 490. 3c. Lateral view of specimen X 490. 4a. Oral view of specimen X 488. 
4b. Aboral view of specimen X 488. 4c. Lateral view of specimen X 488. 
Fics. 5-8. Polygnathus lobatus lobatus Branson & Mehl 
5a. Oral view of specimen X 378. 5b. Aboral view of specimen X 378. 5c. Lateral view of 
specimen X 378. 6a. Oral view of specimen X 376. 6b. Aboral view of specimen X 376. 
6c. Lateral view of specimen X 376. 7a. Oral view of specimen X 377. 7b. Aboral view of 
specimen X 377. 7c. Lateral view of specimen X 377. 8a. Oral view of specimen X 440. 
8b. Aboral view of specimen X 440. 8c. Lateral view of specimen X 440. 
Fic. 9. Polygnathus lobatus inflexus subsp. nov. 
a. Oral view of holotype X 375. b. Aboral view of holotype X 375. c. Lateral view of 
holotype X 375. 
Fic. Io. Cavusgnathus ? sp. nov. A. 
a. Oral view of specimen X 70. b. Aboral view of specimen X 70. c. Inner lateral view of 
specimen X 70. d. Outer lateral view of specimen X 70. 
