96 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Geologic formations described— Continued. 
Comanche Peak limestone, Hill and Vaughan, 
2556. 
Comanche series, Gould, 2073. 
Comanche series, Hill and Vaughan, 2556. 
Comanche series, Vaughan, 5738. 
Como group, Knight, 3208, 3217. 
Conanicut arkose, Shaler, Woodworth, and 
Foerste, 4940. 
Conception slate, Walcott, 5815. 
Conemaugh formation, Clark, 919. 
Conemaugh formation, O'Harra, 4129. 
Connecticut River sandstone, Emerson, 1677. 
Conodont bed, Grabau, 2085. 
Conway schist, Emerson, 1676, 1677. 
Cook Inlet gravels, Spurr, 5184. 
Coosa shale, McCalley, 3818. 
Copper-bearing series, Dawson, 1426. 
Copper Mountain greenstone, Schrader, 4830, 
4833. 
Copper River silts and gravels, Schrader, 4833. 
Corbinconglomerate lentil, Campbell, 736, 737. 
Corniferous, Blatchley and Ashley, 496. 
Corniferous limestone, Bishop, 448. 
Corniferous limestone, Luther, 3602. 
Cottonwood, Beede, 398. 
Cottonwood limestone, Keyes, 3148. 
Cottonwood formation, Prosser, 4490. 
Cottonwood limestone, Keyes, 3128, 3142. 
Courtland quartzite, Hall, 2251. 
Coutchiching, Coleman, 1038. 
Coutchiching, Grant, 2138. 
Coutchiching, Mclnnes, 3832. 
Coutchiching, Winchell and Grant, 6289. 
Crab Orchard shales, Foerste, 1843. 
Cranston beds, Shaler, Woodworth, and 
Foerste, 4940. 
Crosswicks clays, Clark, 910, 915. 
Crystal sandstone, Keyes, 3090. 
Ctenodonta bed, Winchell and Ulrich, 6337. 
Cuchara formation, Hills, 2599. 
Cuchara beds, Osborn, 4193, 4200. 
Culebra clay, Hill, 2557. 
Cumberland quartzite, Shaler, Woodworth, 
and Foerste, 4940. 
Cumberland sandstone, Foerste, 1843. 
Dakota, Bain, 193, 196. 
Dakota, Darton, 1323. 
Dakota, Gould, 2075. 
Dakota, Haworth, 2369. 
Dakota, Logan, 3552. 
Dakota formation, Cross, 1201. 
Dakota formation, Logan, 3559. 
Dakota sandstone, Hills, 2599. 
Dakota formation, Spurr, 5175. 
Dakota formation, Todd, 5424. 
Dakota formation, Weed, 5945. 
Dakota formation, Weed and Pirsson, 5942. 
Dakota group, Gould, 2073. 
Dakota sandstone, Beede, 392. 
Dakota sandstone, Darton, 1328. 
Dakota sandstone, Gilbert, 2005. 
Dakota sandstone, Hills, 2596. 
Dakota sandstone, Marsh, 3712. 
Dakota sandstone, Prosser, 4491. 
Dakota sandstone, Todd, 5436. 
Dakota sandstone, Ward, 5856. 
Geologic formations described — Continued. 
Dakota sandstone, Wilder, 6140. 
Davenport beds, Norton, 4124. 
Day Creek formation, Cragin, 1128. 
Decker Ferry formation, Weller, 6003. 
De Kalb limestone, Bain, 198. 
Deer Creek limestone, Haworth, 2375. 
Delhi formation, Lindgren, 3547. 
Del Rio clays, Hill and Vaughan, 2556, 2562. 
Del Rio clay, Vaughan, 5738, 5739. 
Delaware stage, Calvin, 714. 
Denver formation, Davis, 1363, 1389. 
Des Moines, Bain, 173, 193, 195, 198. 
Des Moines, Beyer, 438. 
Des Moines, Keyes, 3139. 
Des Moines, Leonard, 3464. 
Des Moines, Macbride, 3624. 
Des Moines, Tilton and Bain, 5396. 
Des Moines, Udden, 5517. 
Des Moines shale, Tilton, 5395. 
Des Moines series, Keyes, 3090, 3113, 3122, 3134. 
Des Moines series, Shepard, 4946. 
Des Moines stage, Beyer, 435, 436. 
Des Moines stage, Calvin, 711. 
Des Moines stage, Marbut, 3649, 3650. 
Devonic, Clarke, 971. 
Devonic, Clarke and Schuchert, 965. 
Dielasma beds, Norton, 4124. 
Dighton conglomerate group, Shaler, Wood- 
worth, and Foerste, 4940. 
Diplograptus bed, Sardeson, 4799. 
Dismal formation, Campbell, 735. 
Dog Creek formation, Cragin, 1128. 
Dolores formation, Cross, 1201. 
Dolores formation, Cross and Spencer, 1206. 
Dotson sandstone, Campbell, 735. 
Douty gravel, Willis, 6209. 
Dover shale and sandstone, Beede, 390. 
Dresbach sandstone, Berkey, 427. 
Dresbach shale, Berkey, 429. 
Dry Creek shale, Weed, 5953. 
Dundee limestone, Lane, 3394. 
Dundee limestone, Sherzer, 4953, 4954. 
Dunkard formation, O'Harra, 4129. 
Eagle Ford formation, Vaughan, 5738, 5739. 
Eagle Ford shales, Hill and Vaughan, 2556. 
Eagle formation, Weed, 5945. 
Eagle Pass formation, Hill and Vaughan, 2556. 
Eagle Pass formation, Vaughan, 5738. 
Earlham limestone, Bain, 198. 
Earlton limestone, Haworth, 2375. 
East Lee limestone, Emerson, 1678. 
Eastern sandstone, Hubbard, 2798. 
Edwards formation, Hill and Vaughan, 2562. 
Edwards limestone, Hill and Vaughan, 2556. 
Edwards limestone, Vaughan, 5733,5739. 
Egremont limestone, Hobbs, 2646. 
Ekmont limestone, Beede, 390. 
Elgin sandstone, Haworth, 2375. 
Elk Falls limestone, Haworth, 2375. 
Elk Mountain porphyry, Emmons, 1712. 
Elkgarden formation. Clark, 911. 
Ellensburg sandstone, Russell, 4721. 
Elliptocephalus zone, Marcou, 3663. 
Ellis formation, Weed. 5945, 5946. 
Empire formation, Diller, 1509. 
Empire limestone, Bagg, 149. 
