SYNOPSIS OF GENERA. 
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Family, Acidaspid^. 
Genus ACIDASPIS, Murchison, 1839. 
Ceratocephala, Warder. Ainer. Jour. Science. 
Cei’atocepliala, Anthony. Ainer. Jour. Science. 
Acidaspis, Murchison. Silurian System. 
Arges {parthn), Goldfcss. Nov. Act. Caes. Leop. Cur. 
Odontopleura, Emmrich. De Ti-ilob. Dissert. 
Trhmcleus} Mdbnster. Beitr, iii ziir Petrefaktenkunde. 
Acidaspiis, Milne-Edwards. Hist. Nat. Crust., vol. iii. 
Acidaspis, Acantholoma, Conrad. Third Ann. Kept. Pal. N. Y. 
Dico'aiiurus, Conrad. Fifth Ann. Kept. Pal. N. Y". 
Ceraurits, Locke. Anier. Jour. Science. 
Bronteus {partim), F. A. Rcembr. Verstein. Harzgeb. 
Arges {partim), Odontopleura, Goldfuss. Neues Jahrb. fiir Min. 
Odontopleura, Burmbister. Organiz. d. Trilob. 
Odontopleu/ra, Arges, C. F. Rcbmer. Rheinisch. Uebergangsg'eb. 
Odontopleura, Emmrich. Neues Jahrb. fiir Min. 
Ce^mirus, Loven. Ofvei’S. of. Kongl. Vetensk. Akad. Forhandl. 
Acidaspis, McCoy. Synopsis Silur. Foss. Ireland. 
Odonto 2 )leura, Barrandb. Notice prelim, sur Syst. Sil. Bohfime. 
Odontopleura, Geinitz. Grundriss d. Verstein. 
Odontopleura, Pictet. Trade element, de Paleont. 
Odontopleura, Beyrich. Untersuchungen ueber Trilob. 
Polyeres, Rouault. Bull. Soc. geol. de France. 
Odontopleura, Selenopeltis, Trapelocera, Corda. Pi'odrom Monog. bohm. Trilob. 
Acidaspis, Hall. Pal. N. Y., vol. i. 
Acidaspis, Phillips and Salter. Mem. Geol. Surv. United Kingdom. 
Acidaspis, McCoy. Ann. and Mag. Nat. Hist. 
Odontopleura, the Brothers Sandbbrger. Vestein. d. rhein. Schicht. Syst. 
Acidaspis, Barrandb. Syst. Sil. Bohdme, vol. i. 
Acidaspis, F. A. RoiMER. Beitr. ii zur Harzgeb. 
Acidaspis, Shumard. Geol. Surv. Missouri. 
Acidaspis, Emmons. American Geology. 
Acidaspis, F. A. Rcembr. Beitr. iii, Harzgeb. 
Acidaspis, Billings. Rept. Geol. Survey Canada. 
Acidaspis, Giebbl. Silur. Faun. Unterharz. 
Acidaspis, Billings. Rept. Prog. Canad. Geel. Surv. 
Acidaspis, Hall. Pal. N. Y., vol. iii. 
Acidasjns, McCoy. Synops. Silui'. Foss. Ireland. 
Acidaspis, Hellman. Die Petrefacten Thiiringens. 
Acidaspis, Hall. Geol. Surv. Wisconsin. 
Acidaspis, Richter. Zeitschr. der deutsch. geolog. Gesellschaft. 
Acidaspis, F. A. Rcembr. Beitr. v, Harzgeb. 
Acidaspis, Meek and Worthbn. Geol. Surv. Illinois, Pal., vol. iii. 
Acidaspis, Linnarson. Vestergotl. camb. och. silur. Afiag. 
Acidctspis, Barrandb. Syst. Sil. Boh^ime, vol. i, Suppl. 
Acidaspis, Meek. Geol. Ohio, Palaeontology, vol. i. 
Acidaspis, Miller. Cincin. Quart. Jour. Science. 
Acidaspis, C. F. Rcembr. Lethaea palaeozoica. 
