PAIi^OZOIC. 



PISCES. 



CAMBRIAN AND SILURIAN. 



CAMBBIAN. LOWEE SII.. tTPPBE SinjEIAir. 



SPECIES. 



REFERENCES. 



CEPHAIASPrD.E (HETBEOSTEACI). 



Pteraspis Kner, 1847 



CepAalaspis {part) Agassiz, 1835 

 — Banksii Hux. S( Salt. 



— Luden&is Salt, 



— truncatus Httx. 8; Salt. 



Selerodus Agassiz, 1839, . . 



— pmttdiferus . . . Ag 



CsPHAlASPIDai (HeTEEOSTEAOI). 



Scaphaspis XicmTcester, 1 864 



— Lndensis Salt 



— truncatus M.ux. <f Salt. . 



SphagodAis .4^a»*i«, 1839. 



.-^9 



Thelodus Agassiz, 1839. 



— parvidens Ag 



GANOIDEI. 



Q. J. Geol. Soc. vol. xii, p. 100, t. 2, f. 2 a^i, 3; id.ib. vol. xiv, 

 p. 274, 1. 15 ; ib. Siluria, 4 ed. p. 240, Foss. 68, f . 2. 



Vide Scaphaspis. 



PLACOIDEI. 

 Vide Eukeraspis pustulifems. 



GAUOIDEI. 



Pteraspis, Ann. Mag. Nat. Hist. 3 ser. vol. iv, p. 45, wood- 

 cut, p. 46. Scaphaspis, Lankester, Mono. Fishes of O. R. S. 

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



Fteraspis, Q. J. Geol. Soc. vol. xji, p. 100, t. 2, f. i. Scaph- 

 aspis, Laiester, Mono. Pishes of O. B. S. Pal. Soc. p. 24, 

 t. 2, f. 1-3, 1868. Pteraspis, Siluria, 4ed. p. 240, Foss. 68, 

 f. I. 



Vide Pterygotus problematicus (Crustacea, p. 67). 

 PLACOIDEI. 



Sil. Syst. p. 606, 704, t.4, f. 24-36; ib. Siluria, 4ed. t. 35, 

 f. i8. (Shagreen). 



129 



