188 



CAMBRIAN BRACHIOPODA. 



21a. Lower Cambrian: Limestone below the first fall of Mettawee River, above the North Granville bridge. 

 Fort Ann quadrangle (U. S. G. S.), Washington County, N. Y. (C. D. Walcott, 1890). 

 Lingulella granvillensis. I Olenellus?. 



MicrodiscuB connexus Walcott. | Ptychoparia sp. 



Lower Cambrian: Limestone 1.5 miles (2.4 km.) north of North Granville, Port Ann quadrangle (U. S. G. S.), 

 Washington County, N. Y. (C. D. Walcott, 1891). 



Acrothele nitida. 

 Acrotreta sagittalis taconica. 

 Hyolithellus micans (Billings) 



Microdiscua lobatus (Hall). 

 Olenellus. 



82a. Lower Cambrian: Limestone in Penrhyn quarries. Middle Granville, Mettawee quadrangle (U. S. G. S.), 

 Washington County, N. Y. (C. D. Walcott, 1890). 

 Lingulella sp. 



Acrotreta sagittalis taconica. 

 Billingsella salemensis. 



25. 



Lower Cambrian: Sandstone just above Parker's quarry, near Georgia, Franklin County, Vt. (C. D. Walcott. 

 and Cooper Curtice, 1883). 



*Rustella edsoni. 



Micromitra (Paterina) bella. 



Nisusia festinata. 



*Nisusia festinata transversa. 



Medusa? sp. 



Eocystites? sp. 



*Mesonacis vermontana (Hall). 



*P8edeumias transitans Walcott. 



*01enellus thompsoni (Hall). 



Olenellus thompsoni crassimarginatus Walcott. 



Microdiscus parkeri Walcott. 



Ptychoparia adamsi (Billings). 



Ptychoparia vulcanus (Billings). 



Protypus senectus (Billings). 



Bathynotus holopyga (Hall). 



Olenoides marcoui (Whitfield). 



Lower Cambrian: Lime.stone on the Hall (Donaldson's) farm, 2 miles (3.2 km.) east of Swanton, Franklin 

 County, Vt. (C. D. Walcott and Cooper Curtice, 1883). 



*Micromitra (Paterina) labradorica swantonensis. 



Obolus cf . prindlei. 



Lingulella granvillensis. 



Kutorgina cingulata. 



Nisusia festinata. 



Nisusia festinata transversa. 



Billingsella orientalis. 

 Hyolithes sp. 



Salterella pulchella Billings. 

 Olenellus thompsoni (Hall). 

 Ptychoparia adamei (Billings). 

 Protypus senectus (Billings). 



26. 



Lower Cambrian: Sandstone northeast of the Corman farm buildings, east of Highgate Springs, Franklia 

 County, Vt. (C. D. Walcott and Cooper Curtice, 1883). 



Micromitra (Paterina) labradorica swantonensis. 

 Nisusia festinata. 

 Billingsella orientalis. 

 Scenella varians Walcott. 

 Hyolithes sp. 



Olenoides desiderata (Walcott). 

 Ptychoparia adamsi (Billings). 

 Ptychoparia teucer (Billings). 

 Ptychoparia vulcanus (Billings). 

 Ptychoparia sp. 



27. 



Lower Cambrian: Even -bedded and conglomerate limestones on the ridge in the eastern suburb of Troy^ 

 Troy quadrangle (U. S. G. S.), Rensselaer County, N. Y. (Cooper Curtice, 1883). 



Obolella crassa. 

 Bicia gemma. 

 Botsfordia cselata. 

 *Acrothele nitida. 

 Archseocyathua rarus.(Ford). 

 Archseocyathus rensselsericum (Ford). 

 Scenella retusa Ford. 

 Stenotheca rugosa (Hall). 

 Platyceras primsevum Billings. 

 Hyolithellus micans Billings. 



Hyolithes americanus Billings. 

 Hyolithes communis Billings. 

 Hyolithes communis emmonsi Ford. 

 Hyolithes impar Ford. 

 Hyolithes sp. 



Microdiscus lobatus (Hall). 

 Microdiscus speciosus Ford. 

 Elliptocephala asaphoides Emmons. 

 Olenoides fordi Walcott. 

 Solenopleura nana Ford. 



27a. Lower Cambrian: Reddish sandstone about 1 mile (1.6 km.) east of Lansingbiu:g, north of Troy, Cohoea 

 quadrangle (U. S. G. S.), Rensselaer County, N. Y. (Cooper Curtice, 1883). 

 Obolella crassa. 



