275 



1. Auloporoid coral sp. undt. 



2. *Serpulites annulatus Dawson. 



3. Productus sp. 



4. Schuchertella sp. 



5. *"Dielasma sacculus Martin." 



6. Edmondia cf. magdalena Beede. 



7. *Leptodesma sp. cf. Leiopteria acadica Beede. 



8. *Pteronites sp. 



9. *Loxonema sp. 



10. Orthoceras cf. indianense Hall. 



11. *Conularia planicostata Dawson. 



12. Ostracods. 



The Cambrian consists of purplish and greenish shales 

 with thin layers and beds of purplish weathering sandstone 

 and grit. Similar strata outcrop along shore for about 

 1,000 feet (300 m.). The beds are traversed by small 

 faults and dip in various directions usually at high angles. 

 The folding and faulting is such that practically every- 

 where the same horizon is exposed and a three to four-foot 

 bed of coarse sandstone or fine grit in various attitudes is 

 exposed at a number of places. Beyond this, the above 

 measures give place to greenish shales crenulated and 

 closely folded. 



At Young point some of the sandy beds are rich in 

 brachiopods. From these measures Dr. Matthew [2, p. 19] 

 has listed the following species : — 



Leptobolus atavus. Billingsella retroflexa. 



Lingulella selwyni. Holasaphus centropyge. 



Lingulepis roberti. A paradoxidoid trolobite. 



Obolus discus. A eurypterid? crustacean. 



This is the type locality for the trilobite genus Holasa- 

 phus, and specimens of the typical species (cranidia and 

 pygidia are quite abundant in the shale just north of the 

 quarry. 



Regarding the fossils from this locality, Matthew states 

 [2, pp. 18-19] that on examining an earlier collection it was 

 thought that they were of Lower Ordovician age. But as 

 a result of a personal visit to the locality, he became 

 convinced that "the beds, in place of being at the summit 

 of the Cambrian, are towards its base, and are in fact of 

 the lower division of the Etcheminian." Recently the 

 35063— 5 |a 



