464 R. ARNOLD RECONNAISSANCE OF THE OLYMPIC PENINSULA 



List of fossils from near the top of the Clallam formation 



The fourth fauna is that found in sandstone layers interbedded with 

 conglomerates in the upper part of the formation, and is : 



Chione aff. temblor ensis Anderson. Tellina sp. 



Mactra sp. Crepidula prxrupta Conrad. 



Mytilus aff. mathewsonii Gabb. Dentalium substriatum Conrad. 



Panopea generosa Gould. Fusus sp. 



Pecten fucanus Dall. Scala (Opalia) sp. 



Phacoides acutilineatus Conrad. 



List of fossils from the equivalents of the upper beds of the Cape Flattery 



section 



The fifth fauna of the Oligocene-Miocene is that found at the mouth of 

 the Sekiu river in beds the equivalent of the uppermost strata of the Cape 

 Flattery section. The relation of this fauna to those just given is some- 

 what problematical, although it appears quite likely that the former is 

 younger than most of the latter. 



Cardium aff. qtiadrigenarium Conrad. Cancellaria sp. 



Leda sp. Cylichna sp. 



Mactra sp. Dentalium sp. , 



Nucula sp. Fusus sp. 



Tellina aff. bodegensis Hinds. Natica sp. 



Yoldia sp. 



Correlations. — Correlations between the different fossiliferous locali- 

 ties of the Oligocene-Miocene series over the whole of the Peninsula and 

 Puget Sound region are comparatively easy, as are also correlations with 

 certain of the Oregonian faunas such as those of the Astoria shales and 

 sandstones, but when it comes to making direct correlations with the 

 Calif ornian or Alaskan faunas much difficulty is encountered. One of 

 the greatest surprises the writer had in all of his work along the straits 

 was his inability to find the characteristic upper Miocene fauna of the 

 Sooke beds which are so well developed only 15 miles to the northward on 

 Vancouver island. "With an almost unbroken series of Miocene faunas 

 one would certainly expect to find the Sooke species somewhere among the 

 lot, but such was not the case and no plausible explanation of their 

 absence has so far presented itself. 



Coal in the Clallam formation.* — Coal occurs in the sandstones east of 

 Callam bay in the upper part of the Oligocene-Miocene series and in the 

 base of the same series in the vicinity of Freshwater bay. Three well 



* Bulletin no. 260, U. S. Geological Survey, 1905, pp. 413-421. 



