TRANSACTIONS OF SECTION C. G03 



The following Papers were read : — • 

 1. The Yoredale Series and Us Equivalents elsewhere. By Cosmo Johns. 



2. Notes on the Lower Palaeozoic Rocks of the Cautley District, Sedbergh, 

 Yorks. By J. E. Mare, Sc.D., F.R.S., and W.G. Fearnsides, M.A., F.G.S. 



The general succession is well known. The following additions to our know- 

 ledge of the various divisions have been recently obtained by us : — 



Salojiian. — 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. 



Vahntian. — The succession as described by one of us with the late Professor 

 Nicholson was incomplete. We have now found a section in Wat ley Gill which 

 nearly completes the sequence. In that beck the Monograptus argentevs, M. fim- 

 briatus and Bimorphograptus 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 Bimorphograptus 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. 



AshgiHian. — The Ashgill shales have long been known here. The basal 

 Staurocephalus limestone appears to be represented by a greyish argillaceous lime- 

 stone in Taith's Gill, which succeeds the Caradocian rocks with perfect con- 

 formity, and yields abundance of Remopleuridcs radians and other fossils ; also 

 by a similar limestone in the same position in Backside Beck, with badly pre- 

 served trilobites, &c. 



Caradocian. — Black calcareous shales with their argillaceous limestones con- 

 taining 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 

 AshgiHian beds. 



3. The Graptolitic Zones of the Salopian Rocks of the Cautley Area near 

 Sedbergh, Yorkshire. By Miss G. R. Watney and Miss E. G. Welch. 



We have obtained the following zones in the Ludlow rocks in descending 

 order : — 



1. Monograptus leiniwardinensis (Hopk.) . . . Lower Bannisdale Slates 



2. Monograptus Nilssoni (Barr.) { ^"coldwll beds 



3. Monograptus vulgaris (Wood) M. Coldwell beds 



In the Wenlock the following zones have been found in descending order : — 



1. Cyrtograptus Lundgreni (Tullb.) . . . . { ^^^^ 



2 C Oyrtograptus Linnarssoni (Lapw.) 1 Brathav flaes 

 \Cyrtograptus symmetricus (Elles) J j & 



3. Monograptus riccartonensis (Lapw.). . . . Brathay flags 



4- Oyrtograptus Murchisoni (Carr) .... Brathay flags 



These zones are comparable with those discovered by Miss Elles ' and Mrs. 

 Shakespear ' in Wales and the Welsh Borderland ' ; though we have not yet 

 succeeded in finding all the zones which they record we hope shortly to establish 

 them in this area. 



1 Quart. Journ. Geol. Soc, 1900. 



