828 



CAMBRIAN BEACHIOPODA. 



Edwardstown, Quebec, locality in 319u 



Egan Canyon, Egan Range, Nevada, locality in 8f 



Egan Range, Nevada, locality in 8f 



Egeberg, Norway, locality at 323v 



Eggegrund Island, Sweden, locality on 311 



stratigrapbic position of bowlders found on, discussed 684 



eggegrundensis, see Acroircta. 



Eicbwald, C. E. von, bibliographic references 16 



species named for 390 



eicliwaldi, see Obolus. 



Ekerum, Oeland Island, Sweden, localities near 310e, 310f 



Elbe River, Germany, locality near 386e 



Eldon limestone (Middle Cambrian), detailed section, listing in- 

 cluded and correlated species and localities 126-127 



localities in 35g, 57n 



Eldorado limestone (Middle Cambrian), detailed section, listing 



included and correlated species and localities 140 



localities in 54, 55, 55b, 57 



elegaris, see Obolus. 



elegantula, see Curticia and JEostrophomena. 



Elkania, described 561 



cardinal area discussed 304 



classification of 310, 321, 323 



compared with MonoboUna 37S, 410 



Obolus and Obolus {Fordin'ta) 428 



Schuchertina 585 



development of area in 561,562 



evolution discussed 318 



evolution of 317 



general geographic and strati grapliic distribution of 



the species referred to 103 



Hall and Clarke on development of 309 



muscle scars discussed 312 



number of Ordovician species and varieties of 113 



number of species of, in different type^ of sediment. . 160 



ambigua, described 562 



compared with Elkania desiderata 563 



general geographic and stratigrapbic distribution tab- 

 ulated 103 



platform discussed 310 



type specimen figured PI. LI, fig. 2a 



desiderata, described 562 



compared with Dicellomus pectenoides 575 



Elkania ambigua 562 



Elkania ida 563,564 



Obolella 562 



Obolus 563 



Obolus apollinis 562 



Obolus iFordinia) perfectus 430 



discussed 561 



general geographic and stratigrapbic distribution tab- 

 ulated 103 



platform discussed 310 



type specimen not figured. 



ida, described 563 



general geographic and stratigrapbic distribution tab- 

 ulated 103 



platform discussed 310 



type specimen not figured. 



ELkaniinge, classification of 321, 323 



genera and species referred to, described 561-564. 



Elk Pass, Yellowstone National Park, Montana, locality in 302f 



Elk Range, Colorado, locality in 360c 



ella, see Obolus ( Westonia). 



ella onaquiensis, see Obolus ( Westonia). 



Elliptocepliala asaphoides, association mentioned 473, 531, 605 



Elliptocephala asaphoides fauna, mentioned 594 



Ells, R. W., species named for 496 



elUi, see JAngulella. 

 elongata, see Obolella crassa. 

 elongatus, see Obolus ( Westonia). 



El Paso Coimty, Colorado, localities in 186, 



186a, 187, 360, 360a, 360d, 360f, 360g 



El Paso County, Texas, locality in 353b 



Elvins, Missouri, localities near 369a, 369c 



Elvins formation (Upper Cambrian), in generalized section for 



Missouri, listing species and localities 137 



localities in 11 1, 369, 369d 



Ely, Nevada, locality near 8p 



Ely Mountains, Nevada, locaUties in 7k, 31 



Emigrant formation (Upper Cambrian), locaUties in 7s, 



7v, 7x-z, 8a, 8b', 8r 



note on 137 



Emigrant Pass, Nevada, localities near 7x-z, 8a, 8b' 



Emigrant Peak, Nevada, localities near 7r, 7s, 7v, 8r 



Emigsville, Pennsylvania, localities near 49, 49b, 49c, 49w, 346 



Emmons, E., bibliographic references 16 



species named for 685 



Emmons, W. H., bibliographic reference 16 



emmonsi, see Acrotreta. 



Endlich, F. M., species named for 342 



endlicln, see Micromitra sculptilis. 



Enger^nk, Norway, locality at 323e 



England, Cambrian species of, listed 120-121 



generalized section of Cambrian and Ordovician in, listing 



species and localities 135-136 



localities in 304, 304a-l, 304ii-p 



" Eoobolus," characterized 377 



synonym of Obolus 377 



Eoorthinse, classification of 321,326 



genera and species referred to, described 772-795 



surface ornamentation discussed 303 



Eoortliis, described 772 



cardinal area discussed 305 



classification of 321 , 326 



compared with Billingsella 755 



Finkelnburgia 793, 794 



Orusia 705 



cruralium mentioned « . . 309 



evolution discussed.... 320' 



evolution of 317 



general geographic and stratigrapbic distribution of 



the species referred to 108, 109 



general stratigrapbic distribution and number of Cam- 

 brian species and varieties of Ill 



intermediate between Billingsella and Ordovician 



orthoids - 773 



intermediate between Billingsella and Orthis 772 



mentioned 761 



muscle scars discussed 313 



number of Ordovician species and varieties of 113 



number of species of, in different types of sediment. . . 160 



pseudospondylium discussed 307 



reference to, of Eoortliis atava discussed 774 



Eoortliis christianise discussed 775 



Eoorthis f diablo discussed 779 



Eoorthis johannensis discussed 782 



Eoorthis saltensis discussed 788-789 



Eoorthis sp. undt. a mentioned 792 



"Leptxna melita" discussed 777 



"Orthis sp, Pompeckj " mentioned 793 



type species " Orthis remnicha" 773 



Ulrich on spondyhum SOS 



vascular markings discussed 311, 312 



agresic, described 773 



compared with Eoorthis sp. undt. c 793 



general geographic and stratigrapbic distribution tab- 

 ulated lOS 



tjTJe specimen figured PI. LXXXIX, fig. 6 



atava, described 774 



general geographic and stratigrapbic distribution tab- 

 ulated lOS 



type specimen figured PI. XCV, fig. 7 



bavarica, described 775 



general geographic and stratigrapbic distribution tab- 

 ulated lOS 



type specimen figured PI. XCVII, fig. 4 



christianise, described 775 



compared with Eoorthis daunus 776 



Eoorthis tullbergi 790 



Eoorthis wimani 791 



does not include Eoorthis daunus 775,776 



does not include Eoorth is tullbergi 776, 790 



general geograpliic and stratigrapbic distribution tab- 

 ulated lOS 



restricted to the specimens from the Ceratopyge shale . . 775 

 type specimen not figured. 



