MIDDLE CHALK—-COAST OF DEVON. 437 
Rocks at and near Beer Head. Common fossils in this bed 
are : Car diaster pygmceus, C it Jar is hirudo (spines), Discoidea 
Dixoni, Hemiaster minimus , and Rhynchonella Cuvieri. 
The next bed (6 feet thick) does not appear in Mr. Meyer's account, 
but we agree in making the representative of the Beer Stone to be 
5 feet thick ; this bed however differs from the freestone of the 
Beer quarries, which will be described later on. From these two 
beds (2 and 3 of my section) Inoceramus mytiloides, Rhynchonella 
Cuvieri, Cidaris hirudo, Discoidea Dixoni , Hemiaster minimus, 
Calerites subrotundus, and a palate of Pycnodus were obtained by 
Mr. Rhodes and mvself. 
The succeeding 20 feet contain the same and a few other fossils ; 
they constitute Bed 16 of Mr. Meyer, and the thickness of 8 feet 
given by him is probably a misprint for 18 feet. 
The highest bed of my section (No. 8) is clearly No. 17 of Mr. 
Meyer, but few fossils can be found in it at Whitecliff or Beer, and 
I prefer to regard it as the base of the Terebratulina zone. 
The same succession can be examined on the other side of Beer 
Harbour, south of the gap,where a longer extent of the lower beds 
can be reached. The basement bed can be seen to decrease in thick¬ 
ness from 2J to 1 foot, the overlying bed being only 4 feet and the 
Beer Stone only 3 feet at the same place. The total thickness of 
the zone here is not more than 30 feet. The basement bed at 
this place yielded the same fossils as before, together with Cale¬ 
rites subrotundus, while in the bed above I found Micraster cor- 
bovis (a very low horizon for this species), Car diaster pygmceus, 
and Discoidea Dixoni. Car diaster pygmceus is common in these 
beds all along the coast, and runs to an unusually large size, some 
specimens being more than an inch in length. 
The next point at which the zone of Rhynchonella Cuvieri can be 
conveniently measured is at the caves to the north of Pounds Pool. 
Here the beds dip into a slight syncline before rising into the anti¬ 
cline above Pounds Pool beach, and it is the hard chalk of this zone 
which forms the buttresses of the caves. The following descending 
succession can be seen, beginning below a conspicuous layer of 
black flintsfeet. 
7 & 8d Chalk with scattered flints. 2 
5 & 6. Massive streaky chalk with scattered flints, a layer 
of hard yellow nodules at the top and some nodules 
below; marked plane of separation at base - -5 
4. Hard nodular chalk, yellow and rocky at top, and 
another layer of yellow nodules at base, Inoceramus 
mytiloides -------- 4 
2 & 3. Rough nodular chalk (6 inches), passing into streaky 
chalk with few nodules, with rough nodular chalk 
again below, Inoc. mytiloides , Rhyne. Cuvieri , Car- 
diaster pygmceus ------ 7 
1. Hard rough yellowish nodular limestone, with green 
grains in lower part - - - - 2 
20 
Here every bed except the basement is still further condensed, 
