106 Canadian Record of Science. 
actual presence of that terrane. These facts, therefore, point 
to a higher horizon than had hitherto been indicated in the 
“ Geology of Canada” above cited. 
The following list of Trenton fossils is based upon the 
collection made by the writer in 1881—at the quarries near 
the “‘ Pont des Dalles’”—and at the old mill, some two miles 
down the river below this bridge. As can be readily seen 
they are eminently characteristic species. I have no doubt 
that this list could be swollen to larger proportions as the 
rocks are highly fossiliferous and the specimens in a very 
good state of preservation. 
The occurrence of orthoceratites several feet in length 
and in abundance, and of beautifully preserved and large 
specimens of Conularia Trentonensis is especially worthy of 
note. 
List of Trenton Fosstts From JOLIETTE, QUE. 
— 
. Diplograptus cf. D. putillus, Hall. 
. Solenopora compacta, Billings, sp. 
. Stictopora acuta, Hall. 
re sp. indt. 
. Ptilodictya maculata, Ulrich. 
. Monotrypella Trentonensis, Nicholson. 
. Prasopora lycoperdon, Vanuxem. 
. Amplexopora Canadensis, Foord. 
. Serpulites dissolutus, Billings. 
10. Glyptocrinus ramulosus, Billings. 
11. Orthis plicatella, Conrad. 
12. ‘ testudinaria, Dalman. 
13. Strophomena alternata, Conrad. 
14. Leptcna sericea, Sowerby. 
15. Conularia Trentonensis, Hall. 
16. Oyclonema bilix, Hall. 
17. Trochonema umbilicatum, Hall. 
18. Pleurotomaria Progne, Billings. 
19. Endoceras proteiforme, Hall. 
20. “ multitubulatum, Hall. 
21. Calymene seneria, Conrad. 
bo 
OOAD OP 
