42 
Ride No. VIII. 
There is a most splendid section exposed on the side 
of the turnpike road near Mocktree, where the Upper 
Ludlow, Aymestry limestone, and Lower Ludlow, lie 
conformable and continuous to each other. About the 
centre of this section is a very large quarry in which 1 
are to be found most of the Aymestry limestone forms. 
The beds here are of great thickness—at the least 200 
feet—and many of them are full of Pentamerus Knightii , 
which may be obtained very perfect. I have found 
there the rather scarce coral Nebulipora porpillata. At 
the uppermost end of the quarry a very curious section 
is exposed. The lower beds are true Aymestry lime¬ 
stone, dipping at a slight angle to the north-west; the 
upper beds seem to have been scooped out into a hollow 
trough, and afterwards filled in with a fine mudstone 
deposit very similar in character to the upper beds of 
the underlying formation, and containing fossils identical 
in species to the Church Hill beds, which belong to the 
Lower Ludlow rocks. From these beds I have procured 
at least two different species of starfish, viz., Protaster 
Leptosma , and P. vermiformis , several species of Ceratio- 
caris (a crustacean somewhat allied to the shrimps of 
the present age), Pterygotus punctatus , Limuloides 
optatus , a new species of Spongarium, Phacops Doivningii, 
and several species of Orthis. 
The lowest quarry of the Mocktree section is Lower 
Ludlow, from whence several of the fossils figured in 
“Siluria” were obtained; and as it is very often worked 
for building-stone there is generally plenty of material to 
hunt in. From the loose stones which have come from 
the top of the cliff, and have been thrown down the. 
bank on the opposite side of the road, some very perfect 
fossils can be procured, as most of the stones have been 
exposed to the atmosphere for some years, which causes 
