vol. xx. (3) THE SILURIAN ROCKS OF MAY HILL 
205 
6. THE LUDLOW BEDS. 
It has proved impossible to divide the beds into those of 
Upper and Lower Ludlow age. Lithologically near Blaisdon 
they can be described from above downwards thus : — 
feet. 
(a) Green and yellow sandstones with fish bed . . 5 
( b ) Brown sandy shales and sandstones with an 
occasional calcareous layer near their 
summit and several bands of limestone 
near their base 395 
400 
Since beds of this age are frequently exposed in road sections 
and quarries along the eastern side of the Longhope Valley from 
Longhope Station southwards as far as the railway cutting near 
Blaisdon, and at the latter locality they are found conformably 
underlying Downton Sandstone, it will be best to describe them 
first as seen along this line of country. 
Their total thickness near Blaisdon is some 400 feet, and at 
about 360 feet above their base is a quarry by the roadside 
above the Blaisdon cutting which shows brown sandstone with 
occasional calcareous layers. Fossils are very common and 
include : — 
Spirifer crispus. 
Spirifer elevatus. 
Rhynchonella nucula. 
Rhynchonella Wilsoni. 
Rhynchonella Davidsoni. 
Dayia navicula. 
Or this lunata. 
Chonetes striatella. 
A try pa reticularis. 
Whitfieldella didyma. 
Pentamerus linguifer. 
Lingula Lewisi. 
Orthonota amygdalina 
Cyathophyllum sp. 
Monticuliporoid. 
Horiostoma globosum. 
Similar beds are seen for some 14 yards along the roadside, 
and then comes a soft sandstone band and above it the following 
succession : — 
ft. ins. 
(a) Fish bed. A grey sandy deposit full of rolled 
coprolitic matter and containing fish remains o ij 
