66 



University of California Publications in Geology [Vol. 11 



identical with those in the earlier paper. 40 Some of the localities, 

 from which species are listed as belonging to the Clallam formation, 

 are from his "Gettysburg series," along the Strait of Juan de Fuca, 

 East Clallam Bay, Vancouver Island, the Sooke District of Vancouver 

 Island, and from the region of Astoria, Oregon. These lists, except- 

 ing that from the vicinity of Clallam Bay, are largely compiled from 

 lists of other writers. Reagan's conclusion was that the beds of 

 these various localities were in general of the same age. 



C. E. Weaver's paper, "A preliminary report on the Tertiary 

 palaeontology of western Washington," 41 appeared in 1912. In this 

 he described five formations above the Eocene, four of which were 

 referred to the Miocene and one to the Oligocene. The beds placed 

 in the Oligocene he called the Lincoln formation. Three formations, 

 the Blakeley, Wahkiakum and Chehalis, were referred to the Lower 

 Miocene. Weaver's reason for calling the Lincoln beds Oligocene 

 was the presence in them of a number of Tejc-n (Upper Eocene) 

 species. 



Following this, a paper by Ralph Arnold and Harold Hannibal 

 appeared, entitled "The marine Tertiary stratigraphy of the North 

 Pacific Coast of America." 42 These authors differed very radically 

 from Weaver in his divisions. A considerable part of what they 

 recognized as Oligocene had been placed by Weaver in the Miocene. 

 A thickness of about twelve thousand feet of sediments found in 

 Oregon and Washington are referred by them to the Oligocene and 

 given the general name Astoria series. This larger division is divided 

 into three formations, to which the names San Lorenzo, Seattle, and 

 Twin River are given. The fauna of the San Lorenzo beds, which 

 belonged to the oldest of the three formations, was correlated with 

 that found in type sections of the San Lorenzo in the Santa Cruz 

 Mountains. This fauna was the same as that found in Weaver's 

 Lincoln formation. The faunas of the Seattle and Twin River forma- 

 tions were stated to correspond in part to Weaver's Blakeley and in 

 part to his Wahkiakum formation. The beds above the Astoria series 

 were called by Arnold and Hannibal the Monterey, the fauna of 

 which was correlated with that of the Turritella ocoyana zone of the 



40 Beagan, A. B., Die Fossilien der Clallam-formation mit derjenigen der Ter- 

 tier-formation in Vancouver Insel und mit derjenigen der Astoria Miocan- 

 formation in Oregon vergliehen. Centralbl. fur Mineralogie, 1910, pp. 646-651. 



« Weaver, C. E., Wash. Geol. Surv., Bull. 15, pp. 1-80, 1912. 



42 Arnold, Ealph, and Hannibal, Harold, Proe. Amer. Philos. Soc, vol. 52, 

 pp. 559-605, 1913. 



