THE AVONIAN OF THE AVON GORGE 
129 
the river-side exposure which lies between the towing-path and 
the river, below the level of the path. 
Walking along this exposure, the red ‘ Bryozoa Bed ’ is easily 
recognized and is seen to separate the normal Ki beds to the 
south from the ‘ ilfodm/a-Phase ’ to the north. 
The normal Kj series should be worked bed by bed, fragments 
being split off parallel to the bedding planes. 
OrthotJietes cf. crenistria, mut. Ki, Leptcena cf. analog a, Pro- 
ductus bassus and Camarotoechia mitchddeanensis occur in great 
abundance. 
Eumetria aff. carhonaria and Athyris Royssii are common. 
Bryozoa are very abundant, especially the genera Rhabdomeson 
and Rhombopora and certain members of the Monticuliporid 
group. 
Small Gasteropods {Bdlerophon, Capulus, etc.) are common, 
and the species appear to be characteristic of the level. 
Small palatal teeth occur sparingly as we approach the 
Bryozoa Bed. 
The Bryozoa Bed is well developed but calls for no special 
notice. 
The ‘ Modiola-Phsise ’ immediately north of the Bryozoa Bed, 
contains thick bands of shale which are practically unfossil- 
iferous ; a few imperfect specimens of Modiola lata have been 
discovered but Ostracods appear to be absent.^ The lowest beds 
of the ‘ Modm/a-Phase ’ contain obscure Modioliform lamelli- 
branchs, and small Spirorbis-\\kQ tubes are weathered out on the 
surfaces of certain beds. 
0. R. S. 
The lowest beds of the ‘ Modm/a-Phase ’ pass down with per- 
fect conformity into the coloured marls and grits which charac- 
terize Old Bed Sandstone conditions. 
From certain beds near the top of the Old Bed Sandstone 
were obtained the scales of Strepsodus {F) to which reference 
has already been made. 
^ Modiola lata and Ostracods are, however, common in the rail-side 
exposure. 
