SmytS — The Carboniferous Coast-Section at Malahide. 15 



Block G (M 10, 11, 12). 300 feet = Z. (Eepetition of M ?, 8, '9.) 



Abundant — 



Syringopora 6, Van. On Euomphalus in M 10. 

 On Schelwienella in M 12. 

 ^aplifentis delanouei, Ed. & H., and parallela, Carruthers. 

 Pfodiictub hurlingtoiiensis, Hall. 



,, {Avonia) sp. (? aff. hassus. Van.); 

 Schelwienella crenistria, Mut. Z, Van. 

 Syringotliyris carter i, Hall. 

 Athyris glahristria^ Phill. 

 Cainarotoecliia aff. mitcheldeaiiensis, Vait. 



Less common — 



Spirifer roemeriamis, de Kon. 

 Eumetria sp. 



These beds are a repetition of M 7, 8, 9. Owing to the sameness of litho- 

 logy throughout, this was not recognized until the fauna had been carefully 

 collected. The following succession, from above downwards, was noted in 

 each series : — 



(«) Syringopora growing on Euomphalus. In the centre of syncline, at 

 M 6-7, and immediately S. of O.G. fault (M 10), in beds well 

 exposed owing to their strike being parallel to the coast for about 

 200 yards. 



(5) Camarotoechia beds. M 7 and M 11. 



((,') Schehvienella bed. M 7 and M 12 /3. (Indicated in the map by a 

 chain-dot line.) 



(d) Athyris bed. M 7 and M 12. 



(«) Schelwienella bed. M 7 and M 12 a. 



M 8 contains abundant Syringothyris carteri, and M 9 Athyris glahristria. 

 These beds should be repeated at M 12 a;. The latter beds are heavily 

 covered by algae and animal growths, so that it is impossible to collect 

 thoroughly. After some trouble three fossiliferous layers were found, two of 

 which produced only Sgringothyris carteri ; the other (and lowest, uncovered 

 in the Laminaria zone during a spring tide) gave a few specimens of Athyris 

 glahristria. 



The spacing of the beds {a) to {e) in the two series, as well as their order, 

 is in agreement. 



