VAUGHAX : THE KNOLL REGION OF CLITHEROE, ETC. 
45 
The CHATBURN BLACK LIMESTONES. 
The Bold Venture Quarries are definitely of C 1 age by the admix- 
ture of small simple Zaphrentes with gigantoid Caninice. The black 
shales and limestones are capped by typical laminosa-D olomites with 
large Chonetes cf. comoides and, finally, by the invasion of Productus 
suhlcBvis. 
Behind and below these quarries is a series of limestones, with 
thinner shale partings, which are very poorly fossiliferous ; comparison 
with the N. W. Province, remembering the more southerly lie of the 
Chatburn beds, suggests that the whole series belongs to C 1 , and, 
furthermore, that the base of the Carboniferous does not lie far below 
the lowest exposure. 
The Sectional Diagram (Plate VIL) illustrates the general features 
of the sequence from west of Chatburn to the western flank of 
Pendle Hill ; it is not an actual section, but merely elucidates the above 
description. 
(3) The " Pendleside Series " of Hind and Howe. 
li\ the original paper by Dr. Wheelton Hind and Mr. J. A. Howe 
{Q.J.G.S., Vol. Ivii (1901), p. 347 et seqq.) this series was defined as 
lying between the Millstone Grit and the " Limestone-Massif " on 
the side of Pendle Hill, and the name was chosen for the very reason 
that Mr. Tiddeman had already employed the terms Pendleside 
Limestone and Pendleside Grit, both of which were recognised as 
falling within the new " Pendleside Series." 
Very few fossils were cited from Pendle itself beyond Prolecanites 
coinpressiis near the base of the Shales-with-Limestone, and Glyphioceras 
(Beyrichoceras) reticulatuni from the shales between the Pendleside 
Limestone and the Pendleside Grit. 
As already stated, Glyphioceras (Sphenoceras) striatum has also 
been recorded from the top of the Pendleside Limestone. 
The zoning of the " Pendleside Series " has been carried out 
elsewhere (Midlands, Ireland, etc.) and must now be re-correlated 
with the name-area. 
In Brit. Assoc. Kept., York (1906), p. 311, the zonal sequence 
of the " Pendleside " is given by Dr. (now Col.) AVheelton Hind — 
