250 



C. LAPV.'OBTH ON THE MOFFAT SERIES. 



Fig. 1. — Vertical Section, showing the Subdivisions of the Moffat Series of 

 Dobb's Linn and Craigmichan Scaurs. 



Gala or Queensberry flagstones 

 and Greywackes. 







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'* [ 









V, 





cS 





Wj 





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a 



1 





ft 



H 



s 



3 



£ 



w 



la 





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C&3. Zone of Rastrites maximus (Carr.). 

 Grey flaggy shales, sometimes 

 purple, containing four seams 

 of dark carbonaceous shale 

 •with fossils. 



Cb 2 . Zone of Monograptus spinigerus 

 (Nich.). Black and grey shales, 

 with seams of white clay. 



Obh Zone{$nb-)of Diplograptus eometa 

 (Geinitz). Black and grey shi- 

 v very mudstones. 



C«3. Zone of Monograptus gregarius 

 (Lapw.). Black flaggy shales, 

 with lines of coloured clays 

 and seams and nodules of iron- 

 pyrites. 



Ca 2 . Zone of Diplograptus vesiculous 

 (Nich.). Hard black carbona- 

 ceous flags. 



Ca 1 . Zone of Diplograptus acuminatus. 

 Shivery shales— black, brown, 

 and yellow. 



JB6 2 . Zone of Dicellograptus anceps 

 (Nich.). Soft green shales, 

 with seams of black and white 

 mudstones. 



Bb\ 



Bo*. 



Barren Mudstone." Light 

 green flaggy mudstones. 



Zone of Pleurograptus linearis 

 (Carr.). Hard black slaty 

 shales, with seams of white 

 mudstone. 



.Ba 2 . Zone of Dicranograptus Clingani 

 (Carr.). Hard black flags and 

 slaty shales. 



Ba l . Zone of Climacograptus Wilsoni 

 (Lapw.). Flaky shales and 

 mudstones— black, brown, and 

 spotted. 



3-{ 



Ab. " Didymograptus-beds." Highly 

 pyritous slaty black shales and 

 flags, with beds of pale shivery 

 mudstones. 



Aa. "Bibbed Mudstones." Thick beds 

 of pale non-fossiliferous mud- 

 stone, with seams and ribs of 

 hard grey flags. 



No fossils. 



Rastrites maximus, Monograptus turricidatus, M. 

 proteus, M, involutus, M. intermedius, M, runci- 

 natus, M. Becki, Peltocaris aptychoides. 



No fossils. 



Monograptus spinigerus { = Sedgwicki) , M. Hisingeri, 

 M. tenuis, M. attenuatus, Diplograptus Hug'hesi, 

 Retiolites perlatus, Rastrites hybr'idtis, R.capUlaris. 



Horizon of Monograptus Clingani. 

 Diplograptus eometa, D. sinuatus. ' 



Monograptus leptotheea, M. lobiferus, Rastrites 

 peregrinus, Diplograptus tamariscus, Discinocaris 

 Browniana, Eurypterus, &c, Monograptus fimbri 

 atus, M. argutus, M. triangulatus, M. Sandersoni 

 M. communis, M. eoncinnus, M. cyphus, Diplo 

 graptus palmeus, D. physophora. 



Diplograptus vesiculosus, Climacograptus innotatusl 

 Monograptus tenuis, M. attenuatus. 



Diplograptus acuminatus, Dimorphograptus elon- 



gatus. 

 Climacograptus scalaris. 



Dicellograptus anceps, Diplograptus truncatus. 

 Climacograptus bicornis. 



No fossils. 



Dicellograptus, Diplograptus. 



Pleurograptus linearis, Amphigraptus divergent, 

 Leptograptus flaccidus, Diplograptus quadrimu- 

 cronatus, Dicellograptus elegans. 



Eurypterus ?, Siphonotreta micula, Acrotreta Nichol- 

 soni, Dicellograptus Forchhammeri, D. Morrisi, 

 D. moffatensis, D. caduceus, Dicranograptus 

 Clingani, D. ramosus, D. Nicholsoni, Retiolites 

 fibratus, Climacograptus caudatus, Dictyonema 

 moffatensis. 



Climacograptus Wilsoni, C. Scharenbergi, C. bicornis, 

 Diplograptus tricornis, D.foliaceus, Glossograptut 

 Sincksi, Zasiograptus Harknessi. 



Ccenograptus gracilis, C. surcularis, C. pertenuis. 

 Didymograptus superstes. 

 Dicellograptus divaricatus, D. sextans. 

 Dicranograptus formosus, D. ziczac, D. Nicholsoni. 

 Diplograptus dentatus, D. Whitfieldi. 



Thamnograptus typus. 

 Clathrograptus cuneiformis. 



^==~=ky No fossils. 



Hi ! 



