THE AVONIAN OP THE AVON GORGE 
119 
Fauna : — 
Corals : 
Lonsdalia flori- \ 
formis. I abundant. 
Lons. aff. rugosa . ) 
Acrophyllum. 
Dihunophyllum 0. ^ 
Dih. 0 jcommon. 
Aulophyllids (rare). 
Campophyllum. 
Cyathophyllum Mur- 
chisoni. 
Gyathophyllum re- 
gium. 
Brachiopods: 
Productus latissimo - 'i 
giganteus . v abundant. 
Ghoneti- Productus. J 
Prod, hemisphericus (common). 
Lithostrotion irregular e (very 
abundant). 
Lithostrotion junceum. 
Lithostrotion Martini, with Cli- 
siophylloid and Diphyphyl- 
loid variants (abundant). 
Lithostrotion PortlocTci and Lith. 
M' Goyanum (abundant). 
Lith. ensifer. 
Petalaxis Portlocki. 
Alveolites septosa (common). 
Syringopora cf. distans. 
Spirifer striatus. 
Sp. hisidcatus. 
Sp. planicosta. 
Martinia ovalis. 
Reticularia lineata. 
Athyris planosidcata. 
Seminula anibigua. 
Dielasma. 
|-common. 
The above lists include only those species which have been 
recorded from D 2 in the Avon section. If the lists were ex- 
tended to include all the Brachiopods and Corals found in the 
same subzone from all parts of the entire South-Western 
Province, the identity of the Avon fauna would be completely 
concealed, for such a list would include almost all the species 
of these two groups which have been recorded from the rich 
collecting grounds of the Midland and Yoredale Provinces. 
Local detail; — 
The only exposures of D 2 beds on the Clifton side of the Avon 
PI t IX ' Round Point,’ immediately south of 
‘ Point Villa,’ and (2) by the side of the Bridge 
Valley Road, where the same beds crop out again at a higher 
level. 
Clusters of Lithostrotion irregulare are very common, while 
Lithostrotion Martini and its variants build up the greater 
portion of several beds. The greater number of the species 
cited in the foregoing lists can be detected by careful search 
