gO 
LIFE ZONES IN BRITISH CARBONIFEROUS ROCKS. 
Part II.—The Fossils of the Millstone Grits and Pendleside Series. 
(Continued from page 23.) 
(PLATE XIV.) 
WHEELTON HIND, M.D., B.S., F.R.C.S., F.G.S. 
Salter’s original specimen came from the Grits of Pule Hill; 
unfortunately the zone was not stated. The place where 
G. bilingue is most common is on spoil heaps on Pule Hill and 
at Marsden Station. It occurred in small nodules in a band of 
shale passed through when driving the L. & N. W. Railway 
tunnel. The exact position of the band in the series is therefore 
uncertain, but in the Valley of the Noe, Derbyshire, it occurs 
well down in the Pendleside series. Messrs. Barnes and Holroyd 
collected the following fauna at Pule Hill :— 
Celonautilus quadratus. | Nuculana stilla. 
Glyphioceras diadema. Schizodus antiquus. 
5 bilingue. Sanguinolitos tricostatus. 
an reticulatum. Postdontella levis. 
Gastrioceras listert. Pterinopecten papyraceus. 
4 carbonarium. Aviculopecten fibrillosus. 
Euphemus uret. Rhizodopsis sp. 
Macrocheilina gibsont. | Strepsodus saurordes. 
745 reticulata. | Elonichthys aitkent. 
So much, then, for the Pendleside series, which passes above 
insensibly into the Millstone Grit, and with this passage 
Gastrioceras listert gathers strength, both in numbers and size. 
Of this species Spencer remarked : (Proc. York. Geol. and Poly., 
1898, Vol. XIII, p. 390) ‘In the Yoredales (Pendleside series) 
this shell is of small form, and good specimens are somewhat 
rare... . . In the Yoredale Shales of Todmorden small lime- 
stone nodules occur, in which small specimens of this species are 
found in a good state of preservation ; all the specimens I have 
seen are of small size, but as we have their crushed forms 
through the shales of the Millstone Grit, they seem to gradually 
increase both in numbers and size.’ I have never found this 
species myself below the Grits, but I was fortunate enough to 
acquire Mr. Spencer’s fine collection, in which undoubted 
specimens of G. /zster’, small in size, are labelled Horsebridge 
Clough. 
G. carbonartum, which is associated so abundantly with 
Naturalist, 
