484 
THE CRETACEOUS ROCKS OF BRITAIN. 
The base of the zone, with some of the underlying chalk without 
Hints, was seen by Mr. Fox-Strangways in a quarry about 40 feet 
deep in Elsham Church Wood, and again in a pit at the upper cross¬ 
roads near Horkstow. 
The fine section in the large quarry near South Ferriby has 
already been mentioned (see p. 222), but the details of the upper 
part may now be given so far as the face was accessible for measur¬ 
ing ; these are— 
feet. 
Terebra- 
tnlina 
Zone. 
Zone of 
R]lynch. 
Cuvieri. 
Hard white chalk with layers of grey hints, 
lying in beds of unequal thickness and divided 
into massive blocks by irregular joints - about 35 
2 
-Compact cream coloured chalk 
Layer of shaly chalk and marl - 
Hard rough yellowish chalk, full of broken Inoc- 
eramus shell, divided into regular beds, a foot 
or more thick, by partings of shaly marl - . 
For the lower beds see p. 222. 
04 
104 
About 48 
The higher beds of the Terehratulina zone crop out between 
Ferriby and Barton, and are probably exposed in some of the pits 
which are mentioned by Mr. Beid, * though we have not been able 
to verify this supposition by an actual inspection of them. Mr. Keid 
mentions a pit near the farm one mile east of Ferriby Hall, which 
exposes chalk with nodular grey flints, and another in similar 
chalk half a mile north-east of Grange Farm. Again “ west of 
Barton, a pit shows 50 feet of chalk with a few scattered flint 
nodules throughout. Dip S.S.E. Small faults with downthrow 
to the north are visible/’ 
The Middle Chalk of Lincolnshire has not yielded many fossils, 
though many quarries were searched both by myself and by Messrs. 
Allen and Rhodes in their capacit}^ as fossil collectors. The following 
is a list of such as have been recorded : — 
* 1 . * . ■. j 
Zone of 
Rhynch. 
Cuvieri. 
Terehra¬ 
tulina 
Zone. 
Am. [Pachydiscus] peramplus Mant. (Rothwell) 
X 
— 
,, sp. - - - - - 
X 
— 
Inoceramus Brongniarti, Sow. ----- 
— 
X 
,, Cuvieri, Sow. - 
X 
X 
„ involutus ? Sow. (Haugli) - 
— 
X 
,, mytiloides, Sow. 
X 
Ostrea vesicularis, Lam. - 
X 
X 
Rhynchonella Cuvieri, d'Orb. - - - - 
X 
X 
„ 1 lineolata ? Phil. (Rigsby) - 
— 
X 
Terebratula biplicata ? Sow. ----- 
X 
X 
„ semiglobosa, Sow. ----- 
X 
X 
Holaster sp. . 
X 
i - 
* Geology of Parts of North Lincolnshire, Mem. G. S., p. 127. 
