90 
THE CRETACEOUS ROCKS OF BRITAIN 
In the 10 feet above the Chloritic Marl Mr. Ehodes found Am. 
[Schloenbachia] varians, Am. [ Acanth .] Mantelli, Turrilites 
Wiesti, Plocoscyphia fenestrata, and PL reticulata ; and at 40 feet 
from the top of the Chloritic Marl he obtained a large Am. 
[Schloenbachia] varians and Holaster subglobosus. 
List of Fossils from the Chalk Marl of the Isle of Wight. 
The following list of fossils from the Chalk Marl (zone of Ammonites 
varians) is as complete as we have been able to make it. Some 60 feet of 
this zone is exposed at different places above the Undercliff, and Mr. Rhodes 
collected carefully from successive horizons in this thickness to ascertain 
if there was any limitation of species to particular parts of it. The results 
may be taken to show that some species, such as Scaphites cequalis , are 
more common in the lower part or in certain beds ; but many of the species 
met with at only one or two horizons would doubtless be found at others, 
if more prolonged search was made. We have, however, tabulated his 
results for the sake of the record. 
The last column includes species which have been previously recorded 
by Mr. Sharpe in his monograph on Cretaceous Cephalopoda, and by Pro¬ 
fessor Barrois in his Description of the Isle of Wight, as well as some obtained 
by Mr. J. B. Hue, of Ventnor, and sent to me for determination. The 
Ammonites cinctus is a fragment obtained by Mr. Hue and is not perfect 
enough to be free of doubt. The specimen of Salenia Clarki was obtained 
by Mr. J. C. Eccles, who has kindly presented it to the Museum of 
Practical Geology. Those from Luccombe were obtained by me in 1880. 
The localities are indicated by letters, thus : — c=Culver ; v=Yarbridge ; 
u = Undercliff ; 1=Luccombe ; b=Brook; f = Compton Bay. 
1 to 7 
Feet. 
8 to 15 
Feet. 
20 to 28 
Feet. 
30 to 46 
Feet. 
50 to 81 
Feet. 
Height 
un¬ 
known. 
Vertebrata. 
Bone of Pterodactyle. 
X 
b 
Lanina appendiculata, Ag. 
- 
- 
- 
- 
- 
yub 
Ptychodus sp.. 
- 
- 
- 
- 
u 
Cephalopoda. 
Ammonites [Haploceras] cinctus, Sharpe - 
4 
- 
- 
- 
- ' 
ll 
,, [Acanth.] Deverianus d'Orb. - 
- 
- 
v.'., 
- 
b 
„ [Hoplites] falcatus, Mant. 
- 
- 
- 
- 
- 
u 
„ [ „ ] feraudianus, d'Orb.- 
- 
- 
- • 
- 
- 
u 
„ [Acanth.] laticlavius, Sharpe - 
- 
- 
- 
- 
- 
?loc. 
[Lytoceras] leptonema, Sharpe 
- 
- 
- 
- 
- 
0 U 
[Acanth.] Mantelli, Sow. - 
f u 
c 
y 
c 
... 
passim 
] „ ] navicularis, Mant. - 
y u 
u 
- 
c 
- 
passim 
„ [Desm.] octosulcatus, Sharpe - 
- 
- 
- 
- 
- 
u 
„ [ „ ] planulatus, Sow. - 
- 
- 
- 
- 
u 
„ [Phylloceras] Pergensi/A Gross. 
( — Am. velledre, Sharpe 
non Mich.) 
- 
- 
- 
- 
u 
,. [Hoplites] renauxianus, Sharpe, 
non d’Orb. 
.. - 
- 
- 
- 
u 
., [Schloenb.]Renevieri, Sharpe - 
- 
u 
- 
- 
- 
u 
„ [Acanth. ] rotomagensis. Brongn. 
u 
- 
. - 
- 
- • f 
ul b 
„ [Hoplites] Sax by i, Sharpe 
- 
- 
- 
- 
- 
u 
„ [Schloenb.] varians. Sow. - 
cyu 
c u 
cu 
cyf u 
cu 
passim 
„ [ „ ] Coupei, Brongn. 
u 
c u 
c u 
cu 
- 
passim 
„ [Prionot.] Woolgari ? Mant. 
- 
- 
- 
- 
c 
- 
Anisoceras armatus, Sow. - 
- 
- 
1 b 
Baculites baculoides, d’Orb. 
- 
- 
- 
- 
- 
u 1 b 
Belemnites ultimus, d’Orb. - 
- 
. -■ 
• - 
- 
- 
u 
Hamites armatus {see Anisoceras) 
- 
- 
- 
“ 
•- 
- 
„ sp. - - - - - - 
“ 
- 
- 
b 
Nautilus deslongchampsianus, d Orb. - 
- 
- 
- 
- 
u 
„ elei/ans, Sow. .... 
u 
11 
- 
- 
1 u 
„ sublievigatus, d’Orb. 
- 
- 
- 
- 
- 
u 
Scaphites sequalis, Sow. .... 
u 
11 
- 
- 
lx 
Turrilites Bergeri, Brongn. - 
V. 
11 
- 
- 
- 
costatus, Sow. .... 
- 
- 
- 
■ “ 
1 u b 
Mantelli, Sharpe - 
- 
- 
- 
- 
u 
Morrisi, Sharpe - 
u 
- 
- 
- 
- 
b 
scheuchzerianus, Bose. 
11 
- 
- 
c u 
c 
- 
tuberculatus, Bose. 
u 
- 
Cll 
- 
- 
b 
„ Wiesti, Sharpe 
f 
- 
- 
u 
- 
b 
