474 Notices of Memoirs—Lower Paleozoic Rocks. 
VI.—Nores on tHe Lower Patmozorc Rocks or rae Cavriey Disrricr, 
SeppercH, Yorks. By J. E. Marr, Sc.D., F.R.S., and W. G. 
Frarnsipes, M.A., F.G.S. 
HE general succession is well known. The following additions 
to our knowledge of the various divisions have been recently 
obtained by us :-— 
Salopian.—Divisible into Lower Ludlow Rocks (Bannisdale Slates, 
Coniston Grits, and Coldwell Beds) above, and Wenlock Rocks 
(Brathay Flags) below. The calcareous gritty flags with Phacops 
obtusicaudatus are found here at the base of the Coldwell Beds, and 
form a ready line of separation between the Ludlow and Wenlock 
graptolitiferous strata. The Salopian graptolitic zones are being 
worked out by Miss G. R. Watney and Miss E. G. Welch. 
Valentian.—The succession as described by one of us with the late 
Professor Nicholson was incomplete. We have now found a section 
in Watley Gill which nearly completes the sequence. In that beck 
the Ionograptus argenteus, I. fimbriatus, and Dimorphograptus zones 
of the Skelgill Beds are found with their intercalated Trilobite beds, 
the higher graptolitic zones being absent owing to a fault which 
repeats the Dimorphograptus beds. The argenteus zone contains the 
type fossil and its usual associates, and exhibits the ‘ green streak’ 
seen in the Lake District and in North Wales. 
A shgillian.—The Ashgill Shales have long been known here. The 
basal Staurocephalus Limestone appears to be represented by a greyish 
argillaceous limestone in Taith’s Gill, which succeeds the Caradocian 
rocks with perfect conformity, and yields abundance of Remoplewmdes 
radians and other fossils; also by a similar limestone in the same 
position in Backside Beck, with badly preserved Trilobites, ete. 
Caradocian.—Black caleareous shales with their argillaceous lime- 
stones containing a very rich Caradocian fauna, recalling that of the 
Trinucleus Shales of Sweden. The fauna is being worked at and 
separated from that of the Ashgillian, Beds. 
VII.—Own some Rare Fosstts From THE DERBYSHIRE AND NoTTinG 
HAMSHIRE Coat-FIELD. By L. Moyssy, B.A., M.B., B.C., F.G.S. 
N the temporary museum in connexion with this section there will 
be found a collection of fossils illustrating some of the rarer forms 
of the Coal-measure fauna obtained during the last eight years from 
this district. From these it has been thought desirable to select some, 
mainly fragmentary specimens, for more detailed description, in the 
hope that they may be of assistance in the identification of other 
more perfect specimens, should such be obtained, and that a discussion 
on their many perplexing features may lead to a more definite idea as 
to their affinities. : 
Specimen 1, from Shipley, near Ilkeston, Derbyshire. These 
minute bodies, about 3mm. long, are evidently the valves of the 
carapace of a Phyllopod. A similar fossil was described by Lea! from 
Pennsylvania under the name of Cypricardia leidyi. Professor T. 
1 Proc. Acad. Nat. Sc. Philadelphia, vol. vii, pt. iv, p. 341, 1855. 
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