PALEOZOIC. 



HYDEOZOA. 



CAMBRIAN AND SILURIAN. 



CAMBEIAN. LOWEK SIL. 



UPPEE SILI7EIAN. 



SPECIES. 



Grraptolitlius {continued). 

 — tenuis Portl. . 



Sow. , 



— turriculatus ... Sarr. . 



— vomerinus Nich 



&raptopora Rail, 1857., 



Salt 



NEMAaEAPTID^. 



Helioograptus ... Nicholson, li 



Cmnograrptus . . . Hall, 1868... 



— gracilis Hall 



DiCHOaBAPTlD.s;. 

 Loganograptus ... Hall, i868 ? 

 — Logani Hall 



Mwrcliisonites Qoppert, iSe,^ 



NEMAGBAPTID.B. 



Wemagraptus Emmons, 1855 . 



— capillaris Emm 



Oldhamia Forbes, 18 



— antiqua Forbes .. 



— Var. discreta . . . Kin 



— radiata Forbes . 



NEMAaEAPTID.E. 



Pleurograptus ... Nicholson, 1867 

 — linearis Carr. 



. . ft 



12 



REPEEENCES. 



Geol. Eept. p. 319, 1. 19, f. 7; ? ib. M'Coy, Brit. Pal. Poss. 

 p. 6, 1. 1 B, f . 4, 6 ; ib. Salt. Q. J. Geol. Soc. vol. fii, p. 1 73, 

 1. 10, f . I J ib. vol. T, p. 13, 1. 1, f. 9. Monograp. Salteri, 

 Geinitz, Verst. Grauw. die Grapto. p. 36. G. tenuis. Salt. 

 Siluria, 4 ed. p. 51, Poss. 11, f. 12 ; ib. Nicb. Q. J. Geol. 

 Soc. vol. xxiv, p. 538, t. 20, f. 31 ; ib. HaU, Pal. New 

 York, vol. i, p. 272, t. 74, f. 2. 



Vide G. Hisingeri. 



Grapto. de Boheme, p. 56, t. 4, f . 7, 1 1 ; ib. Nich. Q. J. Geol. 

 Soc. vol. xxiv, p. 542, t. 20, f. 29, 30. 



Mono. Brit. Grapto. pt. i, 1872, p. 53, vifoodcuts A, B, C. 



Vide Dictyonema. 



Pal. New York, vol. i, p. 274, t. 74, f. 9; ib. Baily, Q. J. 

 Roy. Geol. Soc. Dub. 1861, t. 4, f. 5 ; ib. Mem. Geol. Surv. 

 Ireland, Sheet 133, p. 1 2, f . 3. 



Grapto. Quebec Group, p. 100, t. 9 ; ib. Hall, Pal. New York, 

 vol. iii. Dichograp. Salt. Q. J. Geol. Soc. vol. xix, p. 138, 

 woodcut, p. 137, f. II. Dichogi-ap. Nich. Q. J. Geol. Soc. 

 vol. xxiv, p. 128. 



Vide Oldhamia. (Antiqua.) 



Am. Geol. vol. i, p. 109, 1. 1, f. 7; ib. Hopk. and Lapw. 

 Grapto. of Arenig and Llaud. Rocks, St. David's, Q. J. Geol. 

 Soc. vol. xxxi, p. 653, t. 34, f. 2. P Cladograptus capil- 

 laris, Carr. Geol. Mag. vol. v, p. 130, t. 5, f. 7. 



Jour. Geol. Soc. Dublin, vol. iv, p. 20. 



Kinahan, Trans. Royal Irish Acad. vol. xxiii, p. 557, f. 5- 

 Salt. Mem. Geol. Surv.' vol. iii (Geol. N. Wales), p. 282', 

 t. 26, f. 1-3. Murchisonites Porbesi (Oldhamia), Gopp. 

 XJeberPoss. Plora Sil. Dev. Unter-Kohl. p. 441, t. 35, f. i, 

 m Acta Acad. Cffis. Leop. Carol. Naturaj Curio. Novo Acti, 

 vol. xxrii, i860; Oldhamia, Baily, Pig. Char. Brit. Poss. 

 vol._ I, p. x-xii, Expl. plate, p. i, 1. 1, f . i a-f . Oldhamia 

 antiqua, Baily, Geol. Mag. vol. ii, p. 385, 397, woodcuts, 

 P- 391-4. f- 3. 4- 



Trans. Roy. Ii-ish Acad. vol. xxiii, p. 556 : var. of 0. antiqua. 



Kinahan, Ti-ans. Roy. Irish Acad. vol. xxiii, p. ec? f q-e 

 8-10; ib. Salt. Mem. Geol. Surv. vol. iii (Giol. N. Valest 

 p. 2S1, t. 26, f. 4, 5, and vars. No. 6, 7; ib. Baily, Geol. 

 Mag. vol 11, p.385-397, woodcut, p. 395, (2 vars.) Oldhamia, 

 Gopp. Ueber Poss. Plora Sil. der Dev. und Uuter-Kohlen, 

 P' 437> _t. 34. f- i. 2. m Acta Acad. Cajs. Leop. Carol. &c. 

 vo . xxvii, i860. 0. radiata, Baily, Pig. Char. Brit. Poss. 

 vol. 1, p. 2, 1. 1, f. 2. 



Cladograptus, Ann. Mag. Nat. Hist. vol. iii. Dendrograptm, 

 Geo . Mag. vo . iv, p. 70. Pleiu-ograptus Unearis, Nich. 

 Geol._ Mag vol. iv, p 258, 1. 1 1, f . 1-4. Cladograptus, 

 Silui-ia 4 ed. p. 541 Foss. 90, f . 8, Caa-ruthers, Ti-ans. Roy 

 Phys. Soc. Edmb. 1858, p. 467, f. i. 



