PALAEOZOIC. 



HYDEOZOA. 



CAMBRIAN AND SILURIAN. 



CAMBRIAN. LOWKE BIL. T/PPEB SILURIAN. 



SPECIES. 



Botiolites (continued). 

 — Geinitzianus ... Barr. 



— pcrlatus Nich 



— -venosus Hall 



DlCHOGBAPTID-E. 



Tetragraptus Salter, 1862 



— bryonoides Hall 



crucialis Salt. 



crucifer Hall 



HaUi Hopk.... 



Headi Hall ... 



Hicksii Hopk.... 



quadri-brachiatus . . . Hall 



Brong. 



THAMNOOEAPTIDi;. 



Thamnograptus... Hall, 1859. 

 — Dovcri Nich 



GLADiOGBAPTiD.fi. 



Trigonograptus... Nicholson, 1869 

 — ensiformis Hall 



— lanceolatus Nich. . 



— truncntus Lapw.. 



INCEBT.E SEDIS. 

 Diehotomous Polyzoon...N«fr. 



~14 



REFERENCES. 



Gladiolites, Grapto. de Boheme, p. 69, t. 4, f. 16, 33. ? B. 

 foliaceus, Geinitz, Verst. tio, f.usj R. Geinitzianus, 

 Nich. Q. J. Geol. Soc. vol. xxiv, p. 530, 1. 19, f. 19, 20; 

 ? ib. Hall, Pal. New York, vol. iii, p. 5 1 8 ; ib. Siluria, 4 ed. 

 p. 540, Foss. 90, f . 2 ; Nich. Mono. Brit. Grap. pt. 1, p. 1 2 1 . 



Q. J. Geol. Soc. vol. xxiv, p. 530, 1. 19, f. 21, 22. 



Pal. New York, vol. ii, p. 40, t. 17 A, f. 2. 



Graptolithus, Grapto. Quebec Group, p. 84, t. 4, f. i-ii; 

 ib. Salt. Q. J. Geol. Soc. vol. xix, p. 138, woodcut, p. 137, 

 f. 8 a. Didymograptus caduceus, Salt. ib. p. 137, woodcut, 

 f . 1 3 a, b. Grapto. latus, M'Coy (part.), Q. J. Geol. Soc. 

 vol. iv, p. 223. T. bryonoides, Nich. Q. J. Geol. Soc. vol. 

 xxiv, p. 131. 



Vide T. quadri-brachiatus. 



Graptolithus, Grapto. Quebec Group, p. 92, t. 5, f. 10; ib. 

 Nich. Q. J. Geol. Soc. vol. xxiv, p. 144. 



Hopk. and Lapw. Arenig and Lland. Rocks, St. David's, Q. J. 

 Geol. Soc. vol. xxxi, p. 651, t. 33, f. 11. 



Graptolithus, Grapto. Quebec Group, p. 94, t. 6, f . 8 ; t. 5, 

 f. 11, 12 ; ib. Nich. Q. J. Geol. Soc. vol. xxiv, p. 131. 



Hopk. and Lapw. Arenig and Lland. Rocks, St. David's, Q. J. 

 Geol. Soc. vol. xxxi, p. 651, t. 33, f. 12. 



Graptolithus, Grapto. Quebec Group, p. 91, t. 5, f. 1-5, t. 6, 

 f. 6, f. 5, 6. Tetragrap. crucialis, Salt. Q. J. Geol. Soc. 

 vol. xix, p. 138, woodcut, p. 137," f. 8 b. Tetra. quadri- 

 brachiatus, Ether. Junr. Ann. Mag. Nat. Hist. 4 ser. vol. 

 xiv, p. 3, t. 3, f. 5-8 ; ib. Hopk. and Lapw. Q. J. Geol. 

 Soc. vol. xxxi, p. 649, t. 33, f . 9. 



Fucoides, Hist. Veg£t. Foss. vol. i, p. 71, t. 6, f. 7, 8. dado- 

 graptus, Geinitz, Die Graptolithen, p. 30, t. 5, f. 32-35. 

 Tetragraptus bryonoides, Salt. Q. J. Geol. Soc. vol. xix, 

 p. 137, f. 8; ib. Ether. Junr. Ann. Mag. Nat. Hist. 4 ser. 

 vol. xiv, p. 2, t. 3, f. 1-4. Tetragraptus serra, Hopk. and, 

 Lapw. Q. J. Geol. Soc. vol. xxxi, p. 650, t. 33, f. 10. 



Ann. Mag. Nat. Hist. 4 ser. vol. xvi, p. 271, t. 7, f. 1. 



Grapto. Rept. Geol. Surv. Canada, 1850, p. 133. Betiolites, 

 Grapto. Quebec Group, p. 114, 1. 14, f. 1-5. Trigone 

 Hopk. and Lapw. Q. J. Geol. Soc. vol. xxxi, p. 659, t. 34, 

 f. 8. 



Ann. Mag. Nat. His. 1869, 4 ser. p. 231, 1. 11. 



Q. J. Geol. Soc. vol. xxxi, p. 660, t. 34, f . 9. 



Q. J. Geol. Soc. vol. xix, p. 138, woodcut, p. 137, f. 14. 



