Vol. 60.] 



SECTIONS IX THE BRISTOL DISTRICT. 



171 



Feet inches 



R. 



Q. 



Thick hard limestone 

 Rubblv limestone 





 



White shaly and rubblv 

 limestone. 



O. Yellow clay-parting ... 



N. Cotham Marble, a con- 

 tinuous band. 



M. Blue and brown and 

 greenish clay, with white 

 shaly partings. 



L. Thinly-bedded, siliceous, 

 white limestone. 



K. More thickly -bedded but 

 fissile, siliceous limestone 

 (see below). 







11 



H 



8 

 



(Precise horizon not specified.) 

 Ostrea liassica. 0. leevis, 0. mitfti- 

 costata, 0. irregularis, Lima gi- 

 gantea, L. valoniensis, L. kct- 

 tangiensis, Feci 01 calvus, F, dispar, 

 Cardinia Listeri, Pholadomya gla- 

 bra, Flicatuia intusstriata, Uni- 

 cardium sp. ; Bhynchonetta calci- 

 costa, Terebratula sp. ; Nautilus 

 striates; Oidaris Edwardsi (?) 

 spines; Peniacrinus ; MontlivaUia 

 sp. ; Serpulq sp. : burrows, etc. 



Similar fossils to S. 



Pleuromya Crowcombeia, Cardinal 

 rlueticum, Plicatula intusstriata. 



Modiola minima, Pleuromya Crow- 

 combeia, Cardium rhtsticum, Fli- 

 catuia intusstriata, Pholadomya 

 glabra, Area (?) Lycetti, Monotis 

 decussata. (Mr. Wickes records 

 insect-fragments. I 



Modiola minima, Monotis decussata, 



Chera n itzia n it id:' . 

 Plcsiosa urus-xeriebra. ; Far''- inula. 



(Barren.) 







I. Dark, shelly, hard, 

 thickly - bedded lime- 

 stone, weathering brown, 

 but with a bluish-black 

 care. 



: > 



Naiadita lanceolate/, (very abundant), 

 Axinus cloacinus, Cardium rheeti- 

 cum, Feet en valoniensis (a few), 

 Myacitessp. ;Estheria minuta,Dar- 

 winula; Acrodus minimus, Hybodus 

 minor, Saurichthys acuminatum, 

 S. apicalis, bones. coprolites. 

 (Mr.~VYickes records Pholidophorus, 

 Lcpidotus, and Legnonoius.) 



Fccten valoniensis 1 very abundant), 

 Axinus cloacinus. A. concentricus, 

 A. ciongatus. Cardium rhtsticum, 

 C. cloacinum. Cardinia regularis, 

 C. suttonensis, Modioli' minima, 

 Fleurophorus elongatus, Pleuromya 

 ( 'roufoombeia, Flicatuia intusstriata, 

 Gervillia precursor, Anomia valo- 

 niensis; Disci no Townshendi; Gyro- 

 lepis Albertii, Saurichthys apicalis, 

 S. acuminatus, Acrodus minimus, 

 Hybodus minor, H. euspidatus ; 

 Termatosaurus Albert i, F. cro- 

 codilinus, Splicer odus minimus; 

 coprolites, scales, spines, etc. 



1 Barren.) 



Avicula contort a, A. solitaria, Axinus 

 cloacinus, Pecten valoniensis, 

 Modiola minima. 



(Just here I have found no fossils. 

 The Lower Rhretic is better dis- 

 played in a fresh section.) 



Such is the original exposure, -which furnished the material for 

 Mr. Wickes's paper. 



H. Dark shaly clay 



G. Limestone resembling I, 

 with a layer of fibrous 

 calcite ( = ' beef ') above it. 

 F. Crumbly black shales ... o 







