WEEKS.] 
PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1901. 117 
Geologic formations, description and synony- 
my—Continued. 
Lake Superior sandstone, Cambrian, Wiscon- 
sin, Collie, 157. 
Lake Superior sandstone, Cambrian, Wiscon- 
sin, Grant, 314. 
Lakota formation, Cretaceous, Black Hills, 
Darton, 198. 
Lamotte sandstone, Cambrian, Missouri, 
Keyes, 429. 
La Plata sandstone, Jura-Trias, Colorado, 
Cross, 176. 
Laramie formation, Cretaceous, Black Hills, 
Darton, 198. 
Laramie formation, Cretaceous, Colorado, 
Hills, 374. 
Laurel limestone, Silurian, Kentucky and 
Tennessee, Foerste, 278. 
Leda clay, Canada, Coleman, 156. 
Lee conglomerate, Carboniferous, Tennessee, 
Keith, 411. 
Le Roux beds, Triassic, Arizona, Ward, 777. 
Lewis shale, Cretaceous, Colorado, Cross, 176. 
Leseur dolomite, Cambrian, Missouri, Keyes, 
429. 
Lockport limestone, Silurian, New York. 
Synonym, Niagara limestone, Grabau, 306. 
Loess, Pleistocene, Iowa, Calvin, 100. 
Loess, Pleistocene, Iowa, Udden, 748. 
Logan formation, Carboniferous, Ohio, Pros- 
ser, 629. 
McAdam formation, Silurian, Canada, Ami, 
22. 
McAlister shale, Carboniferous, Indian Ter- 
ritory, Taff, 736. 
McElmo formation, Jura-Trias, Colorado, 
Cross, 176. 
Mancos shale, Cretaceous, Colorado, Cross, 
176. 
Manlius limestone, Silurian, New York, Gra- 
bau, 306. 
Mariato formation, Pleistocene, Panama, 
Hershey, 365. 
Marion formation, Permian, Oklahoma, 
Gould, 302. 
Maryville limestone, Cambrian, Tennessee, 
Keith, 411. 
Mascall formation, Tertiary, Oregon. In- 
cluded in Miocene, Merriam, 542. 
Matawan formation, Cretaceous, Darton and 
Keith, 200. 
Mauch Chunk formation, Carboniferous, 
Maryland, Prosser, 631. 
Medina, Silurian, New York, Grabau, 306. 
Mesa Verde formation, Cretaceous, Colorado, 
Cross, 176. 
Minnelusa formation, Carboniferous, Black 
Hills, Darton, 198. 
Minnewaste limestone, Cretaceous, Black 
Hills, Darton, 198. 
Mississippian series, Carboniferous, Iowa, 
Udden, 748. 
Missourian stage, Carboniferous, Iowa, Cal- 
vin, 100. 
Missourian stage, Carboniferous, Iowa, Ud- 
den, 749. 
Moccasin limestone, Silurian, Tennessee, 
Keith, 411. 
Geologic formations, description and synony- 
my—Continued. 
Moencopie beds, Triassic, Arizona, Ward, 777. 
Monmouth formation, Cretaceous, Atlantic 
coast region, Darton and Keith, 200. 
Monongahela formation, Carboniferous, 
Maryland, Prosser, 631, 632. 
Monterey series, California, Lawson and 
Palache, 484a. 
Montijo conglomerate, Panama, Hershey, 365. 
Morrison formation, Jurassic, Colorado, Lee, 
487. 
Mottled limestone (upper and lower), Ordo- 
vician, Canada, Dowling, 236. 
Myrtle formation, Cretaceous, Oregon, Diller, 
231. 
Nanjemoy formation or stage, Eocene, Mary- 
land. Includes Potapaco and Woodstock 
members or substages. Clark and Martin, 
140. 
New Albany shale, Devonian of Indiana, 
Kindle, 442. 
New Albany black shale, Devonian, Indiana, 
Stiebenthal, 709. 
Newman limestone, Carboniferous, Tennes- 
see, Keith, 411. 
Niagara formation, Silurian, Maryland, Pros- 
ser, 631. 
Niobrara formation, Cretaceous, Black Hills, 
Darton, 198. 
Nolichucky shale, Cambrian, Tennessee, 
Keith, 411. 
North Haven greenstones, Maine, Smith, 707. 
North View sandstone and shale, Carbonif- 
erous, Missouri, Weller, 801. 
Nussbaum formation, Neocene, Colorado, 
Hills, 374. 
Onondaga limestone, Devonian, New York, 
Grabau, 306. 
Opeche formation, Carboniferous, Black 
Hills, Darton, 198. 
Orindan formation, Lawson and Palache, 
484a. 
Oriskany sandstone, Devonian, Maryland, 
Prosser, 631. 
Otis, Devonian, Iowa, Norton, 568. 
Painted Desert beds, Triassic, Arizona, Ward, 
777. 
Pahasapa limestone, Carboniferous, Black 
Hills, Darton, 198. 
Pamunkey formation, Tertiary, Atlantic 
coast region. Darton and Keith, 200. 
Panama formation, Hershey, 365. 
Paspotansa member or substage. Eocene, 
Maryland. Included in Aquia formation 
or stage. Clark and Martin, 140. 
Pearson limestone, Carboniferous, Missouri, 
Weller, 801. 
Pegram limestone, Devonian, Kentucky and 
Tennessee, Foerste, 278. 
Pendleton sandstone, Carboniferous, Indi- 
ana, Siebenthal, 709. 
Pennington shale, Carboniferous, Tennessee, 
Keith, 411. 
Pensauken formation, New Jersey, Smock, 
712. 
Petit Bourg series, West Indies, Spencer, 720. 
