58 



NEW YORK STATE MUSEUM 



Orbiculoidea sp., 49, 50. 



lodensis, 41, 42. 

 Orthis carinata, 52, 53. 



tioga, 49, 50, 52, 53. 

 Orthoceras sp., 49, SO. 



pacator, 45. 

 Orthothetes chemungensis, 52, 53. 



Paleoneilo constricta, 52, 53. 



emarginata, 53. 



filosa, 49, 52, 53. 

 Paleoniscus devonicus, 46. 

 Paleotrochus praecursor, 45, 48. 

 Panenka sp., 42. 

 Paropsonema cryptophyum, 49. 

 Parrish limestone. 44-45, 55. 

 Phragmostoma natator, 45, 49. 

 Pleurotomaria rugulata, 41, 42. 

 Plumalina plumaria, 45. 

 Polygnathus dubius, 46. 

 Portage group, term, 38. 

 Prattsburg shales and flags, 52-53. 

 Prioniodus erraticus, 46. 



spicatus, 46. 

 Probeloceras lutheri, 41, 45, 48. 

 ProducteJla boydi, 52. 



hirsuta, 52. 



hystricula, 53. 



lachrymosa, 48, 49, 50, 52, 53. 

 onusta, 53. 

 speciosa, 52. 

 spinulicosta, 49. 



Protonympha devonica, 49. 

 Pterinea chemungensis, 53. 

 Pterinopecten imbecilis, 52. 

 Pterochaenia fragilis, 41, 42, 45, 46. 



Rhinestreet shale, 45-47. 



Schizophoria impressa, 48, 49, 50, 52, 



53- 



tulliensis, 40. 

 Spathiocaris emersoni, 45, 46. 

 Spirifer disjunctus, 53. 



marcyi, 53. 



mesacostalis, 49, 50, 52, 53. 

 mesastrialis, 52. 



mucronatus var. posterus, 48, 53. 

 Standish shales and flags, 42, 43. 

 Stropheodonta cayuta, 50, 52, 53. 



demissa, 53. 

 Styliolina fissurella, 41, 45. 



Tichenor limestone, 38. 

 Tornoceras uniangulare, 45. 

 Tropidoleptus carinatus, 52. 

 Tully limestone, 39-40, 54. 



Undulations of the strata, 54-55. 



West Hill flags and shales, 49-51. 

 West River black shale, 41-43. 



