PAL/EOZOIC. 



PISCES. 



CAMBRIAN AND SILURIAN. 



CAMBRIAN. LOWER SIL. UPPEK SILURIAN. 



SPECIES. 



Cephalaspid.i-: (Hetehostraci). 



Pteraspis Knet\ 1S47 



Cephalaspis {pni'i)Af/assiz^ 183; 

 — Banksii Hux. Sc SaU. . . 



— Ludensis SaU 



— Irutientiis Hux. cf Sal/. . 



Sclerodtis A</(fssiz, iS^tj.. 



— pus/uli/eriis , . . Ag 



C'ephalaspid.e (Heteeosteaci). 



Soaphaspis Lankester, 1864 



— Ludensis Salt 



— truncatus Hiix.Sf Salt. , 



Spharjorhts .] ^J_(7«s.v/~, 1S39., 



— pristodonfus . . . Afj 



Thelodus Ayassi:, 1S39. 



— parvidens Ai/ 



^ -J 



REFERENCES 



(iANOIDEI. 



Q. J. (tool. Soc. vol. xii, |i. 100, t. J, f. 2 a-il, 3; Ut. il). vol. siv, 

 p. 2;4, t. 15 ; il>. Siluria, 4 i<l. p. 240, Foss. 68, f. i. 



Tide Scapliaspis. 



Vide Sc'aphas))is. 



PLACOIDEI. 

 Vide Eukcraspis imstiilifci-us. 



GANOIDEI. 



I'te/'axjii.s\ Anil. Mag-. Nat. Hist. 3 .■sei'. vul.iv, 11.45, wmxl- 

 cut, ]i. 46. Scaphaspis, Lankester, Mmui. Fisliesnf (). U.S. 

 Pal. Sue. p. 25, t. 2, f. 4. 



? ] Vtera.^jj/s, (.^, ,]. Ueol. Soc. vol. .\ii, p. 100, t. 2, f. i. Scapb- 

 aspis, Lankester, Mono. Fishes of (). U.S. Pal. Soc. p. 24, 

 t. 2, f. i-:\, 1S68. i'to'os^w, Siluria. 4 etl. p. 240, Foss. 68, 

 f. I. 



Vide Ptervgotus prohleuiatieus (Crustacea, p. 6;). 

 PLACOIDEI. 



Sil. Syst. p. 606, 7041 t- 4> t'.-4-,l6; ib. Sihiria, 4 eil. t. 3j; 

 f. r'S. (Sba.tri'een). 



129 



