THE AVONIAN OF THE AVON GORGE 
123 
massive forms of Lithostrotion. The fossils occur, as on 
Eownham Hill, in a thick rubbly limestone; this bed can 
be followed up the slopes, and is well exposed on the sides of 
Stoke Leigh Camp. 
Continuing our traverse, there are no satisfactory exposures 
until we reach the ‘ Point,’ where the lowest beds of the Dibuno- 
phyllum-Zone, are exposed. 
Di- 
Some years ago, when the ‘ Point ’ was being cut back, beds, 
a little higher than those which are well exposed by the side of 
the towing-path, were quarried in the river bank. Productus 
corrugato-hemisphericus, mut. Di is an abundant fossil in these 
beds and fine specimens could then be obtained ; even now, 
although the beds are almost completely covered up by vegeta- 
tion where they crop out at the side of the towing path, this 
characteristic brachiopod can always be obtained by a little work. 
The rock-faces in the main exposure by the side of 
Plate XII ^ 
the path should be very carefully examined, and the 
numerous coral sections should be minutely studied. The dip 
slope of rubbly limestone will also yield solid specimens of D 
fossils if patiently looked over. 
The following fossils can ail be detected in this exposure : — 
Corals: 
Dihuno'phyllum 0. 
Dib. <f). 
CarcinophjUum, d. 
Campophyllum aff. Murchisoni. 
Cyathophyllum Murchisoni. 
Diphyphyllum. 
Brachiopods : 
Productus hemisphericus. 
Prod, giganteus. 
Lithostrotion irregulare. 
Lith. junceum. 
Lith. Martini and a Clisiophylloid 
variant. 
Syringopora cf. genicidata. 
Syr. cf. ramulosa and 8. cf. 
distans. 
Alveolites septosa. 
Ghonetes cf. papilionacea. 
Ch. aff. comoides. 
Productus giganteus and Cyathophyllum Murchisoni reach their 
maximum abundance at this level ; large specimens of Productus 
giganteus almost cover the surfaces of certain beds, and some 
