48 GUIDE TO LOCALITIES. 



so numerous that many tons could be collected. These fragments 

 are found over an area of less than an acre. Professor Shaler 

 holds that the beds from which the fragments were derived 

 " are in place at some little depth beneath the surface ; within 

 a few hundred feet of the locality where the Cretaceous waste 

 now lies." 1 



The most abundant fossil in this rock is an Exogyra, different 

 from any of the previously described species. Shaler holds that 

 this form and the Camptonectes indicate that the deposits are 

 of middle Cretacean or earlier age. 



The following list is taken from Shaler's paper : 



1. New genus ? Cf. Myoconcha. 



2. Plicatula or Ostrea. Cf. P. instabile Stol. and 0. lugu. 

 bris Conrad. 



3. Tellina (linearia)? 



4. Cardium ? 



5. Pteria. 



6. Lucina ? 



7. Turritella (nerina) ? 



8. Camptonectes btirllngtonensis Gabb. 



9. Camptonectes parvus (?) Whitfield. 



10. Chemnitzia. 



11. Lucina. 



12. Corithium. 



13. Anomya ? 



14. Turritella. 



15. Nuculana. 



16. Ostrea or Exogyra ? 



17. Modiola. 



18. Modiola ? 



19. Exogyra. Cf. E. ostracina Lam. 



Another less prolific locality occurs, according to Professor 

 Shaler, on the western shore of Lagoon pond, immediately west 

 of Cottage city. 



3. HIGHLAND LIGHT. 



(Eocene erratics.) 



Route. — By rail, N. Y., N. H. & H. railroad, Cape Coddiv., Kn»eland 

 street station, to North Truro, 114 miles; fare $2.60. Thence walk or ride 



i Shaler, Geol. Martha's Vineyard. U. S. Geol. Surv., 7th Ann. rep., p. 336; 1888. 



