16 FAUNA OF THE CORNBRASH. 



Cornbrasli fossils have been obtained from well-sinkings at Roade, Woodford, and 

 Qninton in the same county, known by their sequence in a vertical succession 

 between two clays. 



27. Near Appleby. — At the Appleby Station (Lincolnshire) there are now 

 only banks to be seen with stone at the base, containing loose fossils of no definite 

 character. At a lower level on the opposite side of the road is a deep clay pit, 

 and at a higher level there are large masses of sand, which may either be Kellaway 

 Sand or derived from it by drift agencies. The lower clay must be " Great Oolite 

 Clay," " perhaps forty feet thick," but there are no exposures of the Cornbrasli 

 between. It may be assumed, therefore, that the Cornbrasli is very thin here, 

 and that it " occupies the surface of the ground," or rather did so before it was 

 removed from where the station now stands. 



Between Thornholme Priory and the old river Ancholme there is another area 

 where excavations have been made in the level surface. In the sides of these 

 excavations, now filled with water, a foot or two of rubbly Cornbrasli is seen 

 resting on a dark clay, which holds up the water. The Cornbrasli is not very 

 fossiliferous, but the underlying clay is full of small oyster fragments, apparently 

 0. siibrugulosa, heaped together by the entrance of new conditions. 



It will be noted that were it not for artificial openings neither of these 

 exposures would be known. When, therefore, elsewhere, as farther south or 

 across the Humber in the South of Yorkshire, no Cornbrasli is known, the reason 

 is just as likely to be lack of artificial openings as absence of the stratum itself. 



Yorkshire Localities. 



28. Stoneclipf Wood. — The succession of the Jurassic rocks on the south side 

 of the Pickering Valley synclinal is less easily followed than on the north. Never- 

 theless we have from the pen of Mr. Hudleston a very clear account of what is to 

 be seen in Stonecliff Wood (' Proc. Geol. Assoc.,' vol. iii). The beds No. 8 of his 

 section, called the Stonecliff Wood series, consist of three parts, viz. : 



Feet. 



1 (e). " A perfect mass of fossils " . . . -7 



2. " Loosish red and white sand " . . . . 18-20 



3(d). " Hard fossiliferous band " ..... 2-3 



No. 1 is followed after a short interval by Kellaway (?) Sand, and that by the 

 Oxford Clay. From the observed character and relations of the Cornbrasli else- 

 where, we should have no difficulty in recognising the Bed 1 (e) as its repre- 

 sentative, unless the fauna forbade it. There is, however, no Macrocephdlites or 

 other Ammonite recorded in any bed, but Trigonia signata is recorded, a species 

 which nine years later Lycett (' Suppl. Brit. Foss. Trigonias') recognised as 



