136 PROCEEDINGS COTTESWOLD CLUB 1908 
From his bed 5 [10] he records Aszmonztes semicostatus, 
and from bed 11 [16], Azzmonztes Johnstont and Am. 
Conybeare. 
Mr H. B. Woodward has written in the Geological 
Survey Memoir on “ The Jurassic Rocks of Britain—The 
Lias of England and Wales (Yorkshire excepted) ” : * 
‘‘The beds comprise about 40 feet of clays or shales with 
about 10 bands of limestone ; the latter forming ledges and 
platforms on the foreshore, and protruding some way 
in- places beneath the alluvial mud of the Severn.” 
After quoting the remarks of George Cumberland given 
above, he continues : 
‘¢ The beds are no longer exposed to this extent, but, as at 
Llantwit in Glamorganshire, we can observe the clusters of 
fossils here and there on the Liassic pavements: Pecten 
textorius, Avicula cygnipes, Lima gigantea, and Pentacrinus 
occurring abundantly in portions of the rock, which else- 
where appear unfossiliferous.” 
‘« The most noteworthy fossils of Fretherne are the Grypheas 
(G. arcuata). They occur in profusion here and there in 
the shales and limestones, and I have nowhere seen finer 
examples. They may be found at all horizons in the cliff- 
section, but are most abundant in the lower beds, and 
especially in a band of shale, above which I obtained a small 
example of Ammonites angulatus. The beds belong to the 
zones of A. angulatus and A. Bucklandi, and perhaps include 
higher stages, for Mr Lucy records A. semicostatus, and 
I obtained a specimen of A. obtusus. Judging by these fossils, 
the thickness of the zone of 4. Buck/andi is not above 20 
feet. It is noteworthy, however, that 4. Bucklandi and 
A. semicostatus occur together about midway up in the beds 
exposed ; and Mr Lucy notes A. Conybeari, together with 
A. Johnstoni, Avicula cygnipes, etc., in a band near the base 
of the cliff. Many other fossils. have been recorded by 
Messrs Brodie and Lucy, including the J/nvolutina, also 
Discina babeana (Orbicula Townshendt), spines of Cidaris, 
vertebre of /chthyosaurus, etc.” 
This cliffsection is the locality whence the type- 
specimens of Gryphea incurva, Sowerby, and Lima 
antzguata (J. Sowerby) were obtained, and several species 
1 Vol. iii. (1893), pp. 139-140. 
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