112 LIAS OF ENGLAND AND WALES : 
inclinations. Tawney noted a bed with a great number of large 
specimens of Chcmnitzia, about 16 feet from the top of the beds 
which he grouped with the Southerndown Series : his description 
well applies to the bed above noted, and as he remarks, it is not 
possible to extract specimens, owing to the toughness of the 
limestone.* 
Pecten suttonensis of Tawney, which is one of the most abundant 
fossils in the Sutton Stone, was regarded by Moore as the Pecten 
Pollux of d'Orbigny, while Tate considered it to be the same as 
P. valoniensis, Defrance. It is a somewhat variable form. It occurs 
in the beds at Shepton Mallet and also in the peculiar cherty 
modifications of the Lower Lias at Harp tree Hill. At the last- 
named locality this species occurs together with Ostrca multi- 
costata and Cardinia suttonensis, two of the most abundant Sutton 
Stone fossils, and in the same beds at Harptree there occur 
Ammonites planorbis and A. Johnstoni (torus}, furnishing strong 
corroborative evidence that the Sutton Stone should be included 
in the zone of Ammonites planorbis.^ A. Johnstoni has lately 
been found in beds like the Sutton Stone, at Shepton Mallet. 
(See p. 88.) 
From the published lists of fossils it is difficult to decide what 
were the precise horizons of all the species. Thus Tawney has 
given lists from the Sutton and Southerndown Series at various 
localities ; Prof. Tate has given a list of fossils from the Sutton 
Stone, with a revision of Tawney 's species ; and Moore has 
done likewise, although his revisions differ in several respects 
from those of Prof. Tate. Moore has also given lists from the 
conglomeratic Lias above the Suttou Stone at Southerndown, and 
lists from Bjocastle, &c.J So much difference of opinion exists 
on the identification of some species, that it is best only to give 
those about which no doubt has been expressed. 
The following fossils have been recorded from the Sutton 
Stone : 
;. Ammonites (see p. 111). 
Neritopsis exigua. 
Patella. 
Pleurotomaria. 
Trochus. 
Cardinia suttonensis. 
Gryphaea. 
Hinnites. 
Lima hettangiensis. 
tuberculata. 
Ostrea irregularis. 
multicostata. 
Pecten suttonensis. 
Plicatu)a intusstriata. 
Astroco3iiia (Stylastrasa) gib- 
bosa. 
rep tans. 
Cyathocoenia incrustans. 
Elysastrsea Fischeri. 
Montlivaltia. 
Rhabdophyllia recondita. 
Thecosmilia mirabilis. 
rugosa. 
suttonensis. 
* Quart. Journ. Geol. Soc., vol. xxii. pp. 75, 76. 
f Geol. East Somerset (Geol. Survey), p. 108. See also Moore, Quart. Journ. 
Geol. Soc., vol. xxiii. p. 492. "W. W. Stoddart noted the occurrence of Sutton 
Stone fossils in the Zone of Ammonites planorbis of the neighbourhood of Bristol,, 
but unfortunately he included the White Lias in that zone. Quart. Journ. Geol., 
Soc., Tol. xxiv. p. 203. 
J Tawney, Ibid., vol. xxii. p. 79 ; Tate, IbiJ.,v<j\. xxiii. p. 309 ; Moore, Ibid., 
pp. 530, &c. 
Specimens so marked have been obtained by myself, and identified by Messrs. 
Shaman and Newton. 
