WILLIAMS.] 
THE PEMBROKE FAUNA. 
29 
Pembroke. — At Pembroke 1 fossils are reported " at the extreme 
south point of the town, near S. Mahar's house" and "in the east part 
of Pembroke, on Hardon Clark's farm," in "slates, grits, and sand- 
stones of various colors, texture, and degrees of inclination. 11 The 
locality was discovered by W. B. Rogers, and some of the species 
wore identified by him. The following were determined by E. Bil- 
lings: 
1. Stenopora. 
Favosites. 
Petraia. 
Strophomena. 
Chonetes. 
Orthis. 
Khynchonella. 
Spirifera. 
Retzia. 
Athyris. 
A try pa. 
L2. 
Modiolopsis. 
13. 
Avicula. 
14. 
Cyrtodonta. 
15. 
Murchisonia. 
in. 
Pleurotornaria 
17. 
Platyostoma. 
is. 
Orthoceras. 
19. 
Calymene. 
20. 
Homalonotus. 
21. 
Tentaculites. 
6. Orthis musculosa (?) 
7. Avicula naviformis. 
8. Calymene blumenbachii. 
9. Homalonotus dawsoni. 
The species determined are: 
1. Favosites cervicornis. 
2. Strophomena rhomboidalis. 
3. Chonetes nova-scotica. 
4. Khynchonella wilsoni var. 
5. Atrypa reticularis. 
Billings adds: "The rocks of this locality are Upper Silurian and 
belong to the Lower Helderberg series of the New York survey. They 
are nearly on the same horizon with those of Square Lake, and also 
with the upper part of the Arisaig series of Dr. Dawson in Nova 
Scotia." 
The following species are added on the determination of Prof. W. B. 
Rogers : 
15. Spirifer sulcatus. 
16. Lepteena rugosa. 
17. Orthis elegantula. 
18. Modiolopsis ovatus. 
10. Discina tenuilamellata. 
11. Cornulites flexuosus. 
12. Tentaculites distans. 
13. Avicula honeymani (?) 
14. Beyrichia lata. 
Hitchcock mentions 2 " seven other patches of the Lower Helderberg 
group, mostly limestones," which are identified by containing " the 
same coral," which is — 
1. Favosites gothlandica. 
The seven localities are as follows: (1) "Squaw Mountain at the 
southwest end of Moosehead Lake ; " (2) "on an island at the lower 
end of Ripogenus Lake ; " (3) "Horseshoe Pond in No. 5, R. 8;" (4) 
"in No. 7, R. 7, near the mouth of the Seboois River," and (5) in No. 
7, R. 6, east of the Seboois River; (6) Ashland, three localities, one of 
Sixth Ann. Kept. Secretary Board of Agriculture, Augusta, 1861, p. 238. 
2 Op. cit., p. 239. 
