341 



found abundant coiled annelid tubes of the species Spirorbis 

 carbonari us Dn. 



The greatest interest in the Joggins fauna has, however, 

 been directed to the land vertebrate remains which are 

 found in the basal carbonaceous deposits and always in the 

 upright Sigillariee tree stumps. These all belong to the 

 Stegocephalian amphibians, and are comprised under three 

 main genera, Dendrerpeton. Hylononms and Hyler- 

 peton. An interesting associate with these forms is the 

 delicate land snail shell, Pupa vetusta Dn., which like- 

 wise occurs in a few of the shale soils in company with 

 another land shell, Zonites priscus, Carpenter. Within the 

 strata proper no amphibian remains have been found with 

 the exception of footprints referred to Dendrerpeton, and 

 the single vertebra of Eosaurits acadianiis Marsh, which 

 was discovered by Marsh west of the coal mine near 

 McCarren brook. 



UPPER PART OF SECTION: McCaRREN BROOK WESTWARD. 



Between McCarren brook and Ragged Reef point, 

 sandstones become again dominant, and the coal groups, 

 although 22 in number, are of very minor importance, but 

 interesting in the fact that they are all accompanied with 

 Stigmarian undersoils. Beds of limestone are entirely 

 lacking in this part of the formation, and in general the 

 effects of swampy conditions are much less evident. 

 Thus the shale zones are prevailingly red in colour, and 

 almost lacking in organic remains with the exception of 

 traces of small rootlets, suggesting conditions of thorough 

 oxidation as well as dessication upon the original mud flats. 

 Erect trees are here rare and the vegetation in general is 

 much more scanty. On the other hand, channelling 

 action of the sandstones and sudden lateral replacements 

 are more conspicuous than before, though evidences of 

 strong current action are not so prevalent as in the succeed- 

 ing Shulie formation. 



Post-Joggins uplift and erosion — The peculiarities of 

 the succeeding Shulie formation are the emphasizing 

 features of strong current action. The beds are dominantly 

 coarse or conglomeratic, and the greater percentage of the 

 pebble content may be readily traced by lithological com- 

 parison to its source in a Cobequid upland. Furthermore, 

 the size of the individual pebbles increases towards the 



