A BIBLIOGRAPHIC LIST OF SPECIES OF NORTH 

 AMERICAN SILURIAN TRILOBITA 



ACIDASPIS Murchison, 1839. 

 Acidaspis brevispinosa Foerste. 



1895. Acidaspis brevispinosa. Foerste, Geol. Surv., Ohio, vol. 7, 



p. 522, pi. 37A, fig. 13. 



Clinton formation: Ohio/ 



Acidaspis danai Hall, see Ceratocephala goniata Warder. 

 Acidaspis fimbriata Hall. 



1882. Acidaspis fimbriata. Hall, llth Rep. Dep. Geol. and Nat. 



Hist., Indiana, p. 334, pi. 33, fig. 11. 

 Niagara: Waldron, Ind. 



1883. Acidaspis fimbriata. Hall, Trans. Albany Inst., vol. 10, p. 



76. 



Niagara: Waldron, Ind. 



Acidaspis Ida W. <fe M., see Ceratocephala goniata Warder. 

 Acidaspis obsoleta van Ing. 



1901. Acidaspis obsoleta. van Ing., School of Mines Quart., vol. 

 23, p. 51, figs. 13-14. 



Silurian: St. Clair Spring, Independence Co., Ark. 

 Acidaspis ortoni Foerste, see Odontopleura ortoni Foerste. 

 Acidaspis perarmata Whiteaves. 



1891. Acidaspis perarmata. Whiteaves, Can. Rec. Sci., vol. 4, 

 p. 300. 



Up. Silurian: Long Point, Lake Winnipegosis, Sas- 

 katchewan. 

 Acidaspis quinquespinosa (Salter, M. S ) Lake. 



1896. Acidaspis quinquespinosa. Lake, Quart. Jour. Geol. Soc., 



Lond., vol. 52, p. 240, pi. 7, figs. 3-4. 



Wenlock Limestone. 



1901. Acida$pis quinquespinosa. van Ing., School of Mines Quart, 

 vol. 23, p. 50, fig. 12. 



Silurian: St. Clair Spring, Independence Co., Ark. 

 Acidaspis vanhornei Weller. 



1907. Acidaspis vanhornei. Weller, This Bulletin, p. 251, pi. 23, figs. 

 3-4. 



Niagaran: Bridgeport, 111. 



AMPYX Dalman, 1826. 

 Ampyx niagarensis van Ing. 



1901. Ampyx niagarensis. van Ing., School of Mines Quart., vol. 

 23, p. 53, fig. 15. 



Silurian: St. Clair Spring, Independence Co., Ark. 



ARCTINURUS Castelnau, 1843. 

 Arctinurus boltoni (Bigsby). 



1825. Paradoxus boltoni. Bigsby, Jour. Acad. Nat. Sci., Phil., 

 1st ser., vol. 4, pt. 2, p. 365, pi. 23. 

 Lockport, N. Y. 



