652 
DR. J. W. DAWSON ON ERECT TREES CONTAINING- ANIMAL 
Very fine series of footprints of several individuals of different sizes, and showing 
different gaits, and in one instance the act of wallowing in soft mud, have been found 
in sandstone at Fillmore's Quarry, Fiver Philip, Nova Scotia, and are now in the 
Museum of the Geological Survey. In some of the series of tracks there is no mark 
of the belly or tail. In others the belly has left impressions marked with longitudinal 
grooves, as if there were abdominal furrows or rows of scales. Descriptions of the 
principal specimens will be found in the publications above referred to. 
2. Sauropus Sydnensis , Dawson. 
[‘Acadian Geology,' 3rd edition, p. 358, and woodcut.] 
This animal had shorter and broader feet, with five toes and no indication of the 
peculiar claw of the previous species. The breadth of the foot was about three inches, 
the width of the body about six inches, and the stride about eight inches. The 
original specimen was obtained by It. Brown, Esq., F.G.S., in the coal formations at 
Sydney, Cape Breton, and is now in the Museum of the McGill University, 
Sauropus antiquior , Dawson. 
This species is based upon a series of footprints found by Mr. F. M. Jones, of 
Halifax, at Parrsboro, and now I believe in the Provincial Museum at Halifax, where 
I have seen the specimen. The horizon is probably that of the Horton series. The 
footprint is about three and a-half inches wide, and scarcely half as much in apparent 
length. It shows four subequal toes, and an outer toe diverging from the others, and 
showing indications of a short claw. The shortness of the impressions in this species 
and in S. Sydnensis gives them a digit!grade aspect, while those of S. unguifer have a 
plantigrade appearance, varying however in different impressions, 
Hylopus Logani, Dawson. 
[‘ Air-breathers of the Coal Period,’ p. 5, fig. 1. ‘ Acadian Geology, 3rd edition, 
p. 353.] 
The original specimen of this footprint was found by Sir W. E. Logan at Horton 
Bluff in 1841, and was the first evidence of the existence of Batrachians in the Car¬ 
boniferous Period. The specimen obtained by Logan is fully described in the works 
above cited. The impression has been made on a firm surface, and shows merely the 
marks of four claws or narrow toes. Each impression is about one inch in length; the 
distance between the right and left footmarks is about three inches, aud the stride 
about four inches. There is no mark of the belly or tail. In 1881 a somewhat larger 
series of impressions, which should, however, probably be referred to the same species, 
was found in the same beds by Mr. Pineo, of Hantsport, and is now in the Museum of 
