SYNONYMIC REFERENCES. 41 



Present reference. 



coloradoensis [Orthis], Meek [1870, p. 425] Eoorthis desmopleuia. 



Shumard [1860, p. 627] Billingsella coloradoensis. 



Columbiana [Crania?], von Huene [1899a, p. 141] '- Philhedra columbiana. 



Columbiana [Crania], Matthew [1902c, pp. 108-109] Do. 



columbiana [Crania?], Walcott [1889c, p. 441] Do. 



columbiana [Philhedra?], von Huene [1899b, pp. 216 and 298] Do. 



columbiana [Philhedra], Walcott [1908c, PI. I, figs. 5 and 5a] -.. Do. 



complexus [Obolella??], Hall and Clarke [1892c, p. 73] Obolus complexus. 



complexus [Obelus?], Barrande [1879b, Pis. XCV, CXI, CXIII, and CLII] . Do. 



complexus [Schmidtia??], Mickwitz [1896, pp. 19-20] Do. 



compta [Orthisina], Tate [1892, p. 185] Nisusia compta. 



concentrica [Acrotreta], Walcott [1902, p. 583] Acrotreta concentrica. 



concinna [Lingulella], Matthew [1901a, pp. 273-274] Lingulella concinna. 



Matthew [1903, pp. 203-204] Do. 



concinnus [Obolus (Lingulella)], Walcott [1902, pp. 608-609] Do. 



contraria [Discina], Barrande [1868a, p. 104] Orbiculoidea contraria. 



Barrande [1868b, pp. 692-693] Do. 



Pompeckj [lS96a, p. 4] Do. 



conula [Acrotreta], Walcott [1902, p. 584] Acrotreta coniila. 



convexa [Acrotreta], Walcott [1902, p. 584] Acrotreta convexa. 



convexa [Ungula], Pander [1830, pp . 59 and 163] Obolus apollinis quenstedti. 



convexa [Ungula plana or]. Pander [1830, p. 163] Obolus apollinis. 



convexus [Obolus (Lingulella) winona], Walcott [1901, p. 691] Lingulella winona convexa. 



coriace [Acrothele], Brogger [1878, p. 76] Acrothele coriacea. 



coriacea [Acrothele], Gronwall [1902, p. 40] Do. 



Linnarsson [1876, pp. 21-23] Do. 



corrugata [Lingula?], Moberg and Segerberg [1906, p. 63] Lingulella lepis. 



Westerg^rd [1909, p. 57] Do. 



corrugata [Orthis (Finkelnburgia) osceola], Walcott [1905a, p. 280] Finkelnburgia osceola corrugata. 



costata [Acrothele matthewi], Matthew [1895a, p. 128] Acrothele prima costata. 



Matthew [1902b, p. 399] Do. 



Matthew [1903, p. 104] Do. 



Crania Eichwald [1829, p. 273] Siphonotreta (in part). 



Crania? columbiana von Huene [1899a, p. 141] Philhedra columbiana. 



Crania columbiana Matthew [1902c, pp. 108-109] Do. 



Crania? columbiana Walcott [1889c, p. 441] Do. 



Crania sulcata Eichwald [1829, p. 274] Siphonotreta unguiculata. 



Crania unguiculata Eichwald [1829, p. 274] Do. 



Craniella?? sp. Walcott [1905b, pp. 4 and 6] Discinopsis? sulcatus. 



crassa [Acrothyra proavia], Matthew [1902b, pp. 389-390] Acrothyra proavia. 



Matthew [1903, p. 94] Do. 



crassa [Dicellomus], Hall [1873, p. 246] Obolella crassa. 



crassa [Obolella], Billings [1872a, p. 218] Do. 



Billings [1872c, p. 356] Do. 



Bornemann [1891, pp. 439^40] Obolus? zoppi. 



Ford [1878, p. 128] Obolella crassa. 



Ford [1881, pp. 131-133] Do. 



Ford [1886a, fig. 2, p. 466] Do. 



Gorham [1905, PL I, figs, la-f] Obolella atlantica. 



Grabauand Shimer [1907, pp. 188-189] Obolella crassa. 



Hall and Clarke [1892a, PL III, figs. 5-7] Do. 



Hall and Clarke [1892c, p. 70] Do. 



Shaler and Foerste [1888, p. 27] Obolella atlantica. 



Walcott [1885b, p. 21] Obolella crassa. 



Walcott [lS86b, p. 114] Do. 



Walcott [lS91a, p. 612] Do. 



Walcott [1905a, p. 321] Do. 



crassa? [Obolella], Grabau [1900, pp. 619-620] Do. 



crassa [Obolella (Orbicula?)], Ford [1871, p. 33] Do. 



crassa [Orbicula?], Hall [1847, p. 290] Do. 



crassa elongata [Obolella], Walcott [new] Obolella crassa elongata. 



crassus [Obolus (Schmidtia)], Mickwitz [1896, pp. 187-193] Obolus (Schmidtia) crassus. 



crassus angulatus [Obolus (Schmidtia)], Mickwitz [1896, pp. 193-194] Do. 



