BRITISH PALAZOZOIC FOSSILS. 
§ 2. SYSTEMATIC LIST OF LOWER PALOZOIC FOSSILS. 
Page at 
which de- 
scribed 
above. 
Genera and Species, with the localities represented by the 
numbers of the preceding List, under each 
Geological Group *. 
Page at 
which de- 
scribed 
above. 
Genera and Species, with the localities represented by the 
numbers of the preceding List, under each 
Geological Group. 
VIOA prisca (M°Coy). 
Lower Ludlow or Wenlock shale, 
169. 
GRAPTOLITES. 
3  |— convolutus (His. Sp.) 
Lower Bala, 161. 
4 |— latus (M°Coy). 
Upper Bala, 30. 
Skiddaw slate, 226—263—132. 
4  |— lobiferus (M°Coy). 
Lower Bala, 161. 
4 |— Ludensis (Murch.) 
Upper Ludlow, 31. 
Lower Ludlow, 101—136. 
Wenlock shale, (15)—187—267— 
73—(233). 
Caradocsandstone, 152—110—(233). 
Bala group, 109—46 a—(15). 
Upper Bala, 114—192—22—198— 
205. 
5 |— — Var. minor (M°Coy). 
Wenlock shale, 151. 
5 \|— millipeda (M°Coy). 
Lower Bala, 161. 
5 |— Murchisoni (Beck.) 
Wenlock shale, 96—79—145. 
5 — sagittarius (His. Sp.) 
Lower Ludlow, 67. 
Wenlock shale,” (15). 
Caradoc sandstone, 177—(42). 
Bala group, (15). 
Upper Bala, 223—235—122—(42)— 
122. 
Lower Bala, 161. 
Upper Tremadoe slate, 251. 
Skiddaw slate, 112—132—226. 
6 |— Sedgwickit (Portk.) 
Bala group, 109. 
Lower Bala, 161. 
10 
10 
11 
GRAPTOLITES (continued). 
— tenuis (Portl.) 
Bala group, 109. 
Lower Bala, 161. 
DIPLOGRAPSUS. 
— foliaceus (Murch. Sp.) 
Upper Bala, 203. 
— folium (His. Sp.) 
Lower Bala, 161. 
— mucronatus (Hall. Sp.) 
Lower Bala, 36. 
Upper Bala, 197. 
— pristis (His. Sp.) 
Caradoc sandstone, 118—120. 
Upper Bala, 30—197—153—216 
— 63. 
Bala Group, 10. 
Lower Bala, 36—116. 
— — Var. B. (Hall.) 
Lower Bala, 161. 
— ramosus (Hall. Sp.) 
Lower Ludlow, 258. 
— rectangularis (M°Coy). 
Lower Bala, 161. 
— seaxtans (Hall. Sp.) 
Lower Bala, 36. 
PROTOVIRGULARIA. 
— dichotoma (M°Coy). 
Lower Bala, 161. 
PYRITONEMA. 
— fasciculus (M°Coy). 
Upper Bala, 250. 
FISTULIPORA. 
— decipiens (M°Coy.) 
Aymestry limestone, | 2. 
* When two rocks occur at any locality, or the age is doubtful, the corresponding number is repeated, between brackets. 
under each of the Geological Groups to which it might probably be referred. 
