172 SUBDIVISIONS OF THE CARBONIFEROUS SYSTEM 
referred to the Coal Measures. This genus, however, was abun- 
dant in early Carboniferous times, as may be gathered from those 
specimens obtained by me in the red, black and gray shales of 
the Union and Riversdale formations of Nova Scotia, which, 
though they underlie the Marine limestones of the Windsor 
formation, are nevertheless referred to the Eo-Carboniferous, 
a position which the enclosed fauna of Phyllopods warrants 
in assigning. 
Crustacea.—Several specimens of a new genus, and new 
species of one of the Podophthalmata and Xiphosura, occur in 
the Harrington River and Riversdale collections in Colchester 
County. These Crustaceans are highly characteristic of the 
Carboniferous system in Europe and America, and their occur- 
rence at this horizon, together with their generic characters, 
point to them as prototypes of higher forms found in the higher 
subsequent cycle of sedimentation in the series of sediments 
referred to in the Coal measures above. Of these, Belinwrus 
grandevus, 'T. R. Jones and H. Woodward, has been recently 
described, and the authors describe it as a Carboniferous form, 
related to Carboniferous species in Great Britain. 
Amphibia.—Of these animals there are both footprints and 
trails in the collection of the Geological Survey or National 
Museum at Ottawa, which are referable to the genera Sawropus 
and Hylopws, which were obtained from rocks of Union and 
Riversdale horizon, and some are of gigantic size. All other 
footprints referable to this genus in North America, have been 
described as Carboniferous and, consequently, the Parrsboro 
and Spencer’s Island specimens are Carboniferous, rather than 
any other horizon. 
In his “Geology, Chemical, Physical and Stratigraphieal,” 
Oxford, 1888, Professor Prestwich gives a table “Showing the 
character and distribution of the species of organic remains in 
the several main groups of the Paleeozoic series in the British 
area.’ Under the head of Amphibians (including footprints) he 
notes the occurrence of these in the Carboniferous, but none in 
the Devonian. 
