20 FOSSIL FLORA OF THE JOHN DAY BASIN, OKEOON. [bull/JOI. 



.... At one locality on Birch Creek, where a .section of the Rattlesnake was care- 

 fully examined, it was found to comprise 30 to 40 feet of coarse basal gravels, above 

 this al)Out 25 feet of soft brown tuff, and capping this about 30 feet of rhyolite. At 

 other localities more than 100 feet of gravel have been seen upon the rhyolite. The 

 l>asal gravel l)eds show a thickness of 200 feet or more in other localities. They are 

 fre(]uently very coarse and contain many pebbles, evidently derived from the Colum- 

 bia [River] lava.'« 



The Rattlcsinike formation has thoroforc not yielded fossil phmts, 

 but contains a considerable vertebrate fauna. 



RIVER TERRACES. 



At many places along- the John Day and its tril)iitaries '"one or 

 more terraces are to ))e found not far above the existing floor of the 

 valley." In several localities they have been found to contain undis- 

 turbed remains of Elephan ppliiu (jenius. 



LOCALITIES FOR FOSSIL PLANTS IN THE JOHN DAY BASIN. 



1. Bridge Creek, about 6 miles southeast of Burnt ranch and 2^ 

 miles southwest of The Dalles military road at Allen's ranch. Collec- 

 tions at this place have ])een made by Condon, Voy, Bendire, Merriam, 

 Osmont, and Knowlton. 



2. Road crossing at Cherry Creek, about 10 miles northwest of 

 Burnt ranch. Collections made by Mcrriam's party in 1J)U0 and l)y 

 Knowlton and Merriam in 1901. The original locality which afforded 

 the specimens studied by Lesquereux and Newberry is said to be 

 about 2 miles up Cherry Creek from the point where the military road 

 first crosses it. 



3. Currant Creek, Crook County. Several species were described 

 by Newberry from collections made by Condon at this locality. 

 Only one of these species has been since obtained in this area and 

 then not at the original place, but at Cherry Creek. The type local- 

 ity is unknown. 



4. One and one-half miles east of Clarnos ferry. Collection 

 made by Merriam\s party in 1900. 



5. Three miles above Clarnos ferry. Collection made by 

 Merriam's party in 1900. 



6. One-half mile northeast of Fossil, Collection made by 

 Merriam's party in 1900. 



7. Three and one-half miles south of Lone Rock. Collection 

 made by Merriam's party in 1900. 



8. Van Horn's ranch (now Belshaw's ranch), about halfway 

 between Canyon and Dayville, on East Fork of John Day River. 

 Original locality .south side of militar}" road and near bed of stream. 

 Collections made by Condon, Voy, Bendire, Merriam, and Knowlton 

 and Merriam. 



o Merriam, op. cit., p. 310. 



