GENERAL GEOLOGY 53 



fossils found [on Woody Island] were very few; one ap- 

 parently a Posidonomya.) the only bivalve ; a singular 

 organism like a flattened Dentalium, but which is prob- 

 ably a worm 

 tube; and an alga 

 which Professor 

 Knowlton iden- 

 tifies with Eich- 

 wald's Chondri- 

 tes heeri, were 



. FIG. 13. FOSSIL LOCALITY, POGIBSHI ISLAND. 



the most con- 

 spicuous. It is not improbable that these slates are of 

 Triassic age, but a final determination will require more 

 prolonged study." 



Professor Alpheus Hyatt reports upon these fossils: 1 

 " The slab from Woody Island, Kadiak, has what appears 

 to be a large, much compressed species of Posidonomya, 

 and I should think it might be Triassic or older, but there 

 is no solid basis for this opinion." 



The fossils from the newer Mesozoic of the Alaska 

 and Kenai peninsulas are from rocks of very different 

 character from the Yakutat Series. A large slab with 

 Monotis salinaria from Cold Bay, west of Kadiak, across 

 Shelikof Strait, is lithologically very like the Vancouver 

 slates. 



In the same way the limited occurrences of Paleozoic 

 fossils in Alaska are in limestones and rocks very unlike 

 those here under discussion. 2 



PORT CLARENCE 



The slates which make up the shore about Port Clar- 

 ence dip about 45 westwardly and have intercalated beds 



1 17th Ann. Rep. U. S. Geol. Survey, pt. i, p. 907. 1896. 

 2 Dr. Dall, Coal and Lignite of Alaska, iyth Ann. Rep. U. S. Geol. Survey, 

 pt. i, pp. 864-5. 1896. 



