Merriam.j John Day Basin. 297 



the basis of faunas to that of the writer, Dr. Wortman states that his 

 Paracotylops (Merycochoerus) beds are doubtless the same as the 

 upper division here proposed, and that his Diceratherium beds 

 would correspond to the middle division. This leaves the lower 

 division without a palaeontologic designation, until its fauna shall 

 be discovered. Attention is called in this connection to the fact 

 that in most classifications of the continental Tertiary beds of North 

 America this division is omitted. 



The collections made by the University of California parties 

 have all been labeled as accurately as possible in the field with 

 reference to horizons, and it is hoped that when the material is 

 finally gotten into form for study it will be possible to obtain more 

 information regarding the vertical distribution of species. Judging 

 from field observations alone, Dr. Wortman would be justified in 

 his classification. The large Paracotylops forms were found to be 

 principally, if not entirely, confined to the upper beds, the Oreodons 

 being principally represented by Eporeodon in the middle division. 

 Remains of the large Elotheres are most abundant in the buff beds, 

 though they are known also from much lower horizons. Remains 

 of Gomphotherium, probably caineloides, were found only in the 

 upper division, where they are quite abundant near the junction of 

 the North and South Forks. Diceratherium is certainly more 

 abundant in the middle division, though it probably occurs in the 

 highest beds as well. 



In a special report on the purely palaeontological results of the 

 work of the expedition, this question will receive further consider- 

 ation. 



Extent and StratigrapJiic Relations. — The fohn Day beds are 

 found exposed interruptedly along the John Day River and its 

 tributaries from Clarno's Ferry up to the Picture Gorge, just below 

 Dayville on the South Fork, and probably as far east as Granite 

 Creek on the Middle and North Fork. North of the mountains 

 unmistakable John Day is seen at Fossil and Lone Rock. Expo- 

 sures near the town of Antelope are possibly also a part of this 

 series. South of the mountains typical deposits are known at 

 Logan Butte near Price. 



At Bridge Creek and in Turtle Cove the whole section is 



