PROCEEDINGS

OF THE

YORKSHIRE

GEOLOGICAL SOCIETY

V o l u m e 3 3 , Part 2

N o v e m b e r to D e c e m b e r , 1961

C O N T E N T S

W . T . D E A N

Trinucleid Trilobites from the Higher Dufton Shales of

the Caradoc Series in the Cross Fell Inlier (Issued 6th

November, 1961) . . . . . .

J. F E R G U S O N

Claviradix, a new Genus of the Family Palaeocorynidae

from the Carboniferous Rocks of County Durham

(Issued lOth November, 1961).

A . S T R A W

The Erosion Surfaces of East Lincolnshire (Issued Sth

December, 1961) . . . . . .

F. MOSELEY

Erosion Surfaces in the Forest of Bowland (Issued 6th

December, 1961). . . . . . .

R. E. ELLIOTT

The Stratigraphy of the Keuper Series in Southern

Nottinghamshire (Issued 15th December, 1961) .

Price 20/-

Yorkshire Geological Society

COUNCIL

Elected 10th December, i960

President

Dr. J. E. Hemingway

Vice-Presidents

Prof. P. C. Sylvester-Bradley Mr. W . H. Wilcockson

Past-President

Prof. K. C. Dunham

Hon. Secretary

Mr. G. de Boer, The University, Hull

H o n . Secretary to the Publications Committee

Dr. Dorothy H. Rayner, Dept. of Geology, The University, Leeds, 2

H o n . Treasurer

Dr. A. E. Currall, Dept. of Geology, The University, St. George's Square, Sheffield, 1

H o n . Editors

Dr. Dorothy H. Rayner Mr. P. D. Lamming, 39 St. Leonard's Road, Harrogate, Yorkshire

H o n . Librarian

Mr. J. Hartley, Dept. of Geology, The University, Leeds, 2

Other Members

Dr. M. H. P. Bott Dr. D. W. Humphries Dr. W. H. C. Ramsbottom Mr. R. W. Clement Prof. L. R. Moore Dr. A. J. Rowell Mr. P. Davison Mr. R. Osborn Dr. J. Shirley Mr. J. Dossor Mr. L. F. Penny Dr. A. A. Wilson

INSTRUCTIONS TO CONTRIBUTORS

M e m b e r s o f t h e S o c i e t y a n d o t h e r s a r e i n v i t e d t o c o m m u n i c a t e p a p e r s

o n o r i g i n a l s u b j e c t s o f g e o l o g i c a l i n t e r e s t f o r p u b l i c a t i o n i n t h e Proceedings.

A l l p a p e r s m u s t b e r e a d a t a m e e t i n g o f t h e S o c i e t y , t h o u g h , at t h e d i s c r e t i o n

o f t h e C o u n c i l , t h i s r e a d i n g m a y b e i n t i t l e o n l y . A n a u t h o r w i s h i n g t o

s u b m i t a p a p e r f o r p u b l i c a t i o n s h o u l d a c c o r d i n g l y w r i t e t o t h e H o n o r a r y

S e c r e t a r y , a n d t y p e s c r i p t s s h o u l d b e s e n t t o h i m .

T h e C o u n c i l is a n x i o u s t o p r o m o t e r a p i d p u b l i c a t i o n , a n d t o th is e n d

has p r i n t e d 'Notes for the guidance of authors' ( s e e Proceedings, v o l . 3 0 , N o . 7 ) ,

c o p i e s o f w h i c h m a y b e o b t a i n e d f r o m t h e H o n o r a r y S e c r e t a r y ( 3 d . p o s t f r e e ) .

T h e C o u n c i l s t r o n g l y r e c o m m e n d s t o a u t h o r s t h e d i r e c t i o n s g i v e n in t h e

' N o t e s ' as a m e a n s o f r e d u c i n g d e l a y s in t h e a c c e p t a n c e and p r i n t i n g o f

c o n t r i b u t i o n s .

Discussion: M e m b e r s c o n t r i b u t i n g t o t h e d i s c u s s i o n o f p a p e r s read

b e f o r e t h e S o c i e t y m a y s u b m i t an a b s t r a c t o f t h e i r r e m a r k s f o r p u b l i c a t i o n in

t h e Proceedings. S u c h c o n t r i b u t i o n s s h o u l d b e se nt t o t h e E d i t o r i m m e d i a t e l y

a f ter t h e m e e t i n g .