SYNONYMIC REFERENCES. 35 



Present reference. 



Atrypa lenticularis Kjerulf [1857, p. 92] Orusia lenticularis. 



Kjerulf [1865, pp. 1 and 3] Do. 



Kjerulf [1879, PI. XIII] Do. 



atrypoidea [Orthis lenticularis], Matthew [1892, p. 48] Orusia lenticularis atrypoides. 



Matthew [1903, p. 217] Do. 



atrypoides [Orthis (Orusia) lenticularis], Walcott [1905a, p. 276] Do. 



attenuata [Acrotreta], Meek [1873, p. 463] Acrotreta attenuata (in part), A. attenuata 



var. (in part), and A. idahoensis (in part). 



Walcott [1905a, p. 298] Acrotreta attenuata. 



attenuata [Lingula], Bornemann [1891, pp. 437-438] Lingulella bornemanni. 



attenuata var. [Acrotreta], Walcott [lS05a, p. 298] Acrotreta attenuata var.? 



auga [Obolus (Lingulella)], Walcott [1898b, pp. 396-397] Lingulella auga. 



Aulonotreta Dall [1877, p. 16] Obolus (Acritis). 



Hall and Clarke [1892a, pp. 243-244] Obolus (in part) and O. (Acritis) (in part). 



Hall and Clarke [1892b, pp. 559-560] Do. 



Hall and Clarke [1892c, p. 82] Do. 



Kutorga [1848, pp. 278-279] Obolus (in part), 0. (Acritis) (in part), and 



O. (Mickwitzella) (in part). 



Morris [1849, pp. 316-317] Obolus (Acritis). 



Aulonotreta antiquissima Hall and Clarke [1892a, figs. 246 and 247, p. 244].. Obolus (Acritis) antiquissimus. 

 Hall and Clarke [1892b, figs. 246 and 247, p. 560]. . Do. 



Aulonotreta polita Kutorga [1848, pp. 279-282] Obolus apollinis (in part), 0. apollinis 



ingricus (in part), and O. (Mickwitzella) 

 siluricus (in part). 



Aulonotreta sculpta Dall [1877, p. 16] Obolus (Acritis) antiquissimus. 



Kutorga [1848, pp. 282-283] Do. 



aurora [Lingula], Hall [1861, p. 24] Obolus (Westonia) aurora. 



Hall [1862, p. 21] Do. 



Hall [1863, pp. 126-127] : Do. 



Hall [1867, pp. 103-104] Do. 



Sardeson [1896, p. 95] Do. 



aurora [Lingulella], Grabau and Shimer [1907, p. 193] Do. 



Hall [1873, pp. 244-245] Do. 



Hall and Clarke [1892c, PI. II, figs. 12 and 13] Do. 



aurora [Obolus (Westonia)], Walcott [1901, p. 691] Do. 



aurora var. [Lingula], Hall [1863, pp. 127-128] Obolus (Westonia) stoneanus. 



Hall [1867, pp. 104-106] Do. 



aurora var. [Lingulella], Hall [1873, pp. 244-245] Do. 



avia [Acrothele], Matthew [1899b, pp. 202-203] Acrothele avia. 



Matthew [1902b, pp. 396-398] Do. 



Matthew [1903, pp. 55 and 98-99] Do. 



avia-puteis [Acrothele], Matthew [1902b, p. 398] Acrothele avia puteis. 



Matthew [1903, p. 100] Do. 



Avicula? desquamata Hall [1847, p. 292] Obolella crassa. 



B. 



babel [Acrotreta], Barrande [1879b, PI. XCV, figs, vn: 1-2] Acrotreta babel. 



baileyi [Acrotreta], Hall and Clarke [1892a, PI. Ill, figs. 28-30] Acrotreta baileyi. 



Hall and Clarke [1892c, p. 102] Do. 



Matthew [1886, pp. 36-37] Do. 



Matthew [1902b, p. 395] Do. 



Matthew [1903, p. 97] Do. 



Walcott [1902, pp. 581-582] Do. 



baileyi? [Acrotreta], Matthew [1892, p. 43] Acrotreta bisecta. 



baltica [Obolus (Westonia)], Walcott [1905a, p. 334] Obolus (Westonia) balticus. 



barabuensis [Leptsena], Whitfield [1878, p. 60] Syntrophia barabuensis. 



Whitfield [1882, pp. 171-172 and 195] Do. 



barabuensis [Orthis], A. Winchell [1864, p. 228] Do. 



barabuensis [Syntrophia], Hall and Clarke [1893b, p. 216] Do. 



Walcott [1905a, pp. 290-291] Do. 



barbata [Acrothele], Moberg and Segerberg [1906, pp. 67-68] Acrothele ceratopygarum. 



baiTandei [Botsfordia?], Walcott [1908d, pp. 77-78] Botsfordia? barrandei. 



