118 
INDEX TO NOKTH AMERICAN GEOLOGY, 
BULL. 203. 
Geologic formations, description and synony- 
my — Continued. 
Phelps sandstone, Carboniferous. Missouri, 
Weller, 801. 
Pierre shale, Cretaceous, Black Hills, Par- 
ton, 198. 
Pierre shale, Cretaceous, Colorado, Hills, 374. 
Pipestone beds, included in White River beds, 
Tertiary, Montana, Douglass, 234a. 
Piscataway member or substage, Eocene, 
Maryland, included in Aquia formation or 
stage, Clark and Martin, 140. 
Pocono sandstone. Carboniferous. Maryland, 
Prosser, 631. 
Poison Canyon formation, Eocene?, Colorado, 
Hills, 374. 
Potapaco member or sub tage, Eocene, Mary- 
land, included in Xanjemoy formation or 
stage, Clark and Martin, 140. 
Potomac formation, Cretaceous, Atlantic 
coast region, Darton and Keith. 200. 
Potosi limestone, Cambrian, Missouri, Keyes, 
429. 
Potosi limestone. Cambrian, Missouri, Nason, 
561. 
Potosi series, Cross, 177. 
Potsdam formation, Cambrian, New York, 
dishing, 185. 
Pottawattamie formation, Carboniferous, 
Kansas, Rogers, 656. 
Pottsville formation, Carboniferous, Mary- 
land, Prosser. 631. 
Pulaski formation, Eocene, Oregon, Diller, 
231 . 
Quebec formation, Ordovician, Canada, Ami, 
14. 
Rattlesnake formation, Tertiary, Oregon, 
included in Pliocene, Merriam, 542. 
Red Beds, Permian, Kansas, Gould, 297. 
Red Rock sandstone. Carboniferous, Iowa. 
included in Des Moines formation. Miller, 
548. 
Richmond group, Ordovician, Kentucky ami 
Tennessee. Foerste, 278. 
Rochester shale, Silurian, New York, Gra ban, 
306. 
Rogersville shale, Cambrian, Tennessee, 
Keith, 411. 
Rome formation, Cambrian, Tennessee, 
Keith. 411. 
Romney formation, Devonian, Maryland, 
Prosser, 631. 
Rondout water lime, Silurian, New York, 
Grabau, 306. 
Rockford limestone, Carboniferous, Indiana, 
Siebenthal, 709. 
Rockwood formation, Silurian, Tennessee, 
Keith, 411. 
Rutledge limestone, Cambrian, Tennessee, 
Keith, 411. 
Sac limestone, Carboniferous, Missouri, Wel- 
ler, 801. 
St. John beds, Devonian, New Brunswick, 
Matthew, 535. 
St. Joseph limestone, Cambrian, Missouri, 
Keyes, 429. 
Geologic formations, description and synony- 
my — Continued. 
St. Joseph limestones, Cambrian, Missouri, 
Nason, 561. 
St. Kitts gravels, West Indies, Spencer, 722. 
St. Louis, Carboniferous, Missouri, included 
in Mississippian series, Miller, 548. 
Salem limestone, Carboniferous, Indiana, 
Cumings, 178. 
Salina formation, Silurian, Maryland, Pros- 
ser, 631. 
Salmon formation, pre-Cretaceous, California, 
Hershey, 362. 
San Carlos formation, Pleistocene, Panama, 
Hershey, 365. 
Sangamon, Pleistocene, Iowa, Udden, 748. 
San Juan formation, Colorado, Cross, 177. 
Savanna sandstone, Carboniferous, Indian 
Territory, Taff, 736. 
Saxicava sand, Canada, Coleman, 156. 
Seaforth limestone, West Indies, Spencer, 719. 
Sellersburg beds, Devonian, Indiana, Kindle 
442. 
Sellersburg limestone, Devonian, Indiana, 
Siebenthal, 709. 
Seminole conglomerate, Carboniferous, In 
dian Territory, Taff, 736. 
Senora formation, Carboniferous, Indian Ter 
ritory, Taff, 736. 
Sevier shale, Silurian, Tennessee, Keith, 411 
Sewell formation, Carboniferous, West Vir 
ginia, Campbell, 105. 
Shasta-Chico series, Cretaceous, California, 
Lawson and Palache, 484a. 
Shinarump, Triassic, Arizona, Ward, 777. 
Siestan formation, California, Lawson and 
Palache, 484a, 
Silver Creek limestone, Devonian, Indiana, 
Siebenthal, 709. 
Silverton series, Colorado, Cross, 177. 
Spearrish formation, Triassic, Black Hills, 
Darton, 198. 
Stafford limestone, Devonian, New York, 
Clarke, 115. 
Stafford limestone, Devonian, New York, 
Wood, 855. 
Stewart shale, Carboniferous, Indian Terri- 
tory, Taff, 736. 
Stonehouse formation, Silurian, Canada, 
Ami, 22. 
Stony Mountain formation, Ordovician, Can- 
ada, Dowling, 236. 
Sunbury shale, Carboniferous, Ohio, Prosser, 
629. 
Sundance formation, Jurassic, Black Hills, 
Darton, 198. 
Teay formation, Pleistocene, West Virginia, 
Campbell, 105. 
Tellico sandstone, Silurian, Tennessee, Keith, 
411. 
Thompson Creek beds, included in White 
River beds, Tertiary, Montana, Douglass, 
234a. 
Thoroughfare volcanoes, Maine, Smith, 707. 
Thurman sandstone. Carboniferous, Indian 
Territory, Taff, 736. 
