624 EEPORT UNITED STATES GEOLOGICAL SURVEY. 



This general section, as I have already indicated, has been compiled 

 from the detailed sections given in preceding portions of the report. The 

 nnmbers of these sections are given in the right-hand column of the 

 table. 



Section No. 11, in John Day's Valley, begins just at the top of the "Eed 

 Beds." Of the latter the best section was made at Station 55. (Section 

 No. 10.) 



The section of Station No. 6G (Section No. 19) is the section of the Meek- 

 oceras Beds, and I am of the opinion that it lies immediately below the 

 Eed Beds. In descending the ridge leading southwest from Station 6Q, 

 the last dips seen are towards the southwest, but the timber soon be- 

 comes dense and obscures the outcrops. After passing through the timber 

 and coming out in the Blackfoot Valley, red sandstones, in all respects 

 like those in John Day's Valley and the Salt Eiver Eange, are noted with 

 a northeastern dip. It is evident, therefore, that the timber covers a 

 synclinal axis, and the red sandstones probably outcrop with a south- 

 west dip somewhere between Station 66 and the northeasterly dipping 

 outcrop on the Blackfoot. 



Again, in the Salt Eiver Eange below the red sandstones is a series 

 of grayish calcareous and arenaceous beds, resembling those of section 

 No. 19 at Station 66. These beds also contain Aviculopecten pealei and 

 Gervillia, which occur in section No. 19. 



The beds therefore appear to be lithologically and palseontologically 

 identical, and also occupy the same position stratigraphically, and I have 

 no hesitation in connecting the sections as I have done in the general 

 section. • 



The limestones, called the " Pentacrinus Beds," were so named because 

 Fentacrinus asteriscus appeared to be a characteristic fossil of the beds 

 wherever they were seen. 



The only fossils from the "Belemnites Beds" were obtained in John 

 Day's Valley, and this name was given provisionally, although it is prob- 

 able that Belemnites densus will be found to range down througli the 

 section in other localities, when a more careful investigation shall be 

 made. 



The name " Eed Beds " has been retained for the red sandstbnes be- 

 cause they are supposed to be equivalent to the " Eed Beds " of the East- 

 ern Eocky Mountain region in Colorado and adjacent regions. 



Organic contents. 



The fossils from No. 1 of the section have been described by Professor 

 White in BuUetin of the Survey, Vol. V, No. 1, pp. 105-117. ' The list is 

 as follows : 



Meelcoceras gracilitatis. 

 Meekoeeras muslibaclianus. 

 Meelcoceras aplanatum. 

 Arcestes f cirratus. 

 Arcestes f two species. 

 Terehratula semisimplex. 

 Terebratula augusta. 

 Amculopecten idahoensis. 

 Aviculopecten pealei. 

 Aviculopecten altus. 

 Eumicrotis curta. 



