No. 11. — A A r eir Occurrence 
Narraga n sett B a si n . 
of Carboniferous Fossils 
in the 
By Myron L. Fuller. 
Although Carboniferous fossils, in a more or less perfectly pre¬ 
served form, have been noticed in many parts of the Narragansett 
Basin, such remains are not sufficiently abundant to render the dis- 
covery of a new locality entirely without interest, and a description 
of such an occurrence may not, therefore, be wholly out of place. 
The locality from which the fossils here described were obtained 
is in the city of Brockton, Massachusetts. This city is situated on 
the northern border of the north-east extension of the great mass of 
Carboniferous strata occupying what is known geologically as the 
Narragansett Basin. On the geological maps of the state the strati¬ 
fied group is indicated as just touching the southern portion of the 
city, but in reality it extends nearly four miles farther to the 
northward, giving an additional area of about thirteen square 
miles. The ledge from which the fossils were taken is about a 
quarter of a mile northeast of the railroad station and presented 
originally no natural outcrop, the low hill at the point in question 
appearing, before the commencement of the excavations undertaken 
by the railroad in connection with the construction of its new 
freight yard, as if composed entirely of a coarse variety of modified 
drift. This, however, proved to be simply a coating, and the buff 
till was soon encountered, while the removal of a few feet more 
exposed the rock itself, of which large amounts were blasted out and 
transferred to a neighboring field. It was in these broken frag¬ 
ments that the first of the fossils were found, my attention being 
called to the occurrence by Dr. L. W. Puffer, of Brockton, who 
was the first to recognize the nature of the remains. 
Before proceeding to the description of the fossils a short review 
of the local formations will be given. A section reaching from the 
northern to the central portion of the city would include the follow¬ 
ing : — 
1. Granites (with diorite). 
2, Basal arkose, 
