DAVIS : SECTIONS IN THE LIASSIC AND OOLITIC ROCKS OF YORKSHIRE. 199 
Ft. In. 
Sandstone with fine black laminations, very charac- 
teristic 
0 
u 
fenaLe 
Q 
O 
A 
u 
Black coaly shale 
0 
3 
Soft white sandstone with rootlets 
1 
0 
Grey shale 
5 
0 
Sandstone and shale with carbonaceous markings and 
some sulphur 
3 
6 
Black shale 
1 
i 
D 
Finely-laminated shale, with irregular patches of coal 
and fossil plants (The Gristhorpe Plant Bed) 
6 
0 
False-bedded sandstone, with pyrites and carbonized 
wood, passing into hard sandstone towards the base, 
which may belong to the Millepore series, but no 
fossils have been found in it 
21 
0 
Total... 
52 
9 
The plant bed at Gristhorpe has yielded the following plaints, 
many of which have been figured by Phillips in the Geology of the 
Yorkshire Coast, and also by Leckenby.* 
Taxites laxus, Phil. Pecopteris dentata, Lindley. 
Walchia Williamsonis, Brong. P. lobifolia, Phil. 
Tseniopteris vittata, Brong. Ctenis falcata, Lindley. 
T. major, Lindley. Odontopteris Leckenbyi, Tign. 
Hymenophyllites Williamsonis, Brong. Otoxamites Beanii, Lindley. 
Sphsenopteris Phillipsii, Brong. Pterophyllum pecten, Lindley. 
Glossopteris Phillipsii, Brong. P. comptum, Lindley. 
Phlebopteris polypodioides, Brong. Equisetites columnaris, Brong. 
P. Phillipsii, Brong. 
In Gristhorpe Bay the Middle Estuarine Series is succeeded by 
the Scarborough or Grey Limestone Series. At Blea Wyke these 
rocks had a thickness of 19 feet (see section, p. 196), from that locality 
southwards they become more and more attenuated, and at Gris- 
thorpe Bay they are only from 3 to 7 feet in thickness, and are 
represented in the cliff by — 
* Quart. Journ. Geol. Soc. , vol. xx. , p. 76, 
