C. LAPWORTH ON THE MOFFAT SERIES. 



309 



Fig. 27. — Vertical Section III. Lower Hartfell Shale Sec. 

 (Dobb's Linn). {Continued upon Section IV. p. 315). 



Thin-bedded, hard, black slaty shales. 



Hard black flaggy shales, with seams 

 of soft black mudstone 





Black flaggy and slaty shales ; fossils 

 rare 



Dark flaky shales, with seams of grey 

 and white mudstone 



GrLENKTLN SHALES. 



Hard grey flags 



Climacograptus tubuliferus. 



Leptograptus jlaccidus, Hetiolites filra~ 

 tus, Lasiograptus margaritatus, Cli- 

 macograptus styloideus (var.). 



Dicellograptus Forchhammeri (vars.). 



Siphonotreta micula, Lingula, Euryp- 

 terus, ? sp. 



Horizon of Dicellograptus caduceus. 



Dicranograptus ramosus, Lasiograptus t 

 sp. 



Horizon of Climacograptus caudatus. 



Corynoides calycularis, Diplograpfus 

 foliaceus (vars.), Dicranograptus 

 Clingani. 



Corynoides, Discina, Climacograptus 

 bicornis, C. Wilsoni, C. Scharenbergi, 

 Diplograptus tricomis. 



Dicranograptus Nieholsoni. 



No fossils. 



Zone of Climacograptus Wilsoni fyc. (Hart/ell). 



Soft black shales, with seams of spotted 

 sandy and ashy mudstone 



Finely laminated soft carbonaceous jf^^^ ^flsj 

 shales 



Coarse gritty beds, with seams of grey 

 ashy shales 



Hard grey flags 



Siliceous flagstones and hard jointed 



shales 



Soft dark shales 



Altered shales and mudstones of 

 doubtful thickness 



Discina. 



Few fossils. 



Diplograptus secalinus, Climaco- 

 graptus bicornis, Diplograptus tri- 

 comis, Climacograptus Wilsoni, C. 

 Scharenbergi, Lasiograptus Hark- 

 nessi, Corynoides calycularis, Dicra- 

 nograptus Nieholsoni. 



GrLENKILN SHALES. 



— ^rz No fossils. 



