PLATE LXXII 



PAGE 



Figs. 1-3. MANTICOCERAS PATERSONI (Hall) 693 



1. Shell upon which sutures are not preserved. Chemung member, 



Williams Road, Polish Mountain, 2042. 



2. Transverse section of shell shown in fig. 1. 



3. Smaller individual preserving suture lines. 



Portage formation, Naples fauna, New York. 



Figs. 4, 5. PROBELOCERAS LUTHERI Clarke 695 



Two small specimens neither showing septa, tentatively referred to 

 this species. Fig. 4X3; fig. 5 natural size. Jennings forma- 

 tion, Genesee member, Wolfe Mill, Allegany County. 



Fig. 6. TORNOCERAS UNIANGULARE (Conrad) 696 



A small flattened specimen showing the characteristic septal sutures. 

 X 2. Jennings formation, Genesee member, Williams Road, 

 Cumberland. 



Fig. 7. SANDBERGEROCERAS CHEMUNGENSIS (Vanuxem) 697 



Part of a single volution. Jennings formation, near base of Parkhead 

 member, White Sulphur Branch, 4 miles southeast of Pratt. 



Figs. 8, 9. PHACOPS RAX A (Green) 699 



8. Glabella. Sideling Hill Creek, 2% miles above mouth, 1700. 



9. Pygidium. Road leading northeast from Pratt, % mile west of 



15-mile Creek. 

 Jennings formation, Parkhead member. 



155 



