INDEX 
apetodus, 203-204 
attenuatus, 212 
dentilineatus, 32, 40-41, 54, 63, 65, 203, 
208-209, 212, 215-217 
expamnsus, 32, 209-210, 217 
foliaceus, 203 
cf. fusiformis, 210 
lacinatus, 42, 213 
lanceolatus, 206, 212 
cf. longiposticus, 34, 
210-212 
multistriatus, 34, 40-41, 46, 60, 65, 202, 
206, 211-212, 216 
nodomarginatus, 32, 41, 212 
primus, 32, 40-41, 200-204, 206, 209, 210, 
212, 214-216 
postinodosus, 32, 40, 213, 214, 239 
striatus, 206, 209, 212 
symmetricus, 55 
triangulus inaequalis, 64-65, 203, 206 
triangulus pinnatus, 60-61, 216 
triangulus subsp. indet, 203 
triangulus triangulus, 60, 203, 206 
SP., 54, 214, 218 
vogest, 32-33, 36, 38, 46, 54, 202, 210, 
216-217 
vogesi—Clydagnathus Assemblage Zone 
54-55 
P, Stage, 18, 44-45, 62 
Pic Stage, 26 
Pe Stage, 18, 62 
41-42, 46, 206, 
Quarry I, 21, 246-247 
Quarry 2, 22, 247-248 
Quarry 3, 22, 249 
Quarry 4, 22 
Rheinisches Schiefergebirge, 18 
Rhenaer Kalk, 63 
Rhenoherzynicum, 8 
River Clydach, 24, 84, 86 
River Mellte, 23 
River Nedd, 23, 153 
River North Esk, 30 
River Sychryd, 23 
Rockford Limestone, 10, 56, 59 
Rossmore Beds, 6 
Roundya, 110-111, 116, 139 
barnetiana, 111, 116 
sp., 116-117 
Roxburghshire, 30, 51, 244, 275, 277 
Rip Stage, 26 
Salem Formation, 10, 43, 62 
Sauerland, 64, 203 
Saunton, 6 
Saverton Shale, 53 
Scaliognathus, 35, 64-65 
anchoralis, 8, 9, 64-65 
anchoralis—Gnathodus bilineatus 
“interregnum ’’, 8 
anchoralis Zone, 64 
Scaphignathus, 53, 84-85, 178, 180, 218, 230 
veliferus, 53, 218 
? sp. A, 218 
? sp. B, 219 
Scotland, 5, 18, 29, 36, 49, 50-52, 62, 66, 244, 
277 
Sedalia Formation, 41, 59, 60, 64, 97, 277 
Seminula Zone, 15-16, 18, 20, 251, 252, 253 
Shale Group, Upper, 29 
Shirehampton Beds, 6, 17 
Shropshire, 5, 6, 25, 32, 66, 244-245, 261, 
202, 277, 
Siegenian, 6 
Silurian, 5, 6, 181 
Siphognathus duplicatus, 219 
Siphonodella, 32, 36, 46, 53, 55, 57-59, 64, 
185, 219, 222, 236, 245 
cooperi, 106 
crenulata Zone, 8, 55, 60, 64 
duplicata, 63-64 
isosticha, 38-39, 55, 57, 220-221 
isosticha—S. cooperi Assemblage Zone, 10, 
56-57, 59 
lobata, 63 
obsoleta, 63-64, 220-221 
—Polygnathus inornatus Assemblage Zone, 
38, 55, 57 
—Pseudopolygnathus triangulus inaequalis 
Zone, 8 
—Pseudopolygnathus triangulus triangulus 
Zone, 8, 55 
quadruplicata, 63 
—quadruplicata—S. crenulata Assemblage 
Zone, 55-56 
sexplicata, 63 
sp. A, 221 
sp., 221 
Subzone, 4, 55 
sulcata, 54, 55 
sulcata Assemblage Zone, 54 
triangulus triangulus Zone, 55 
zones of Mississippi Valley, 59 
Simonstone Limestone, 26-27, 45, 48, 
262-263, 277 
