F. H. Knowlton — Jurassic Flora of Oregon. 43 



S. Redding CreeJc, Trinity County, California. 



The final area of beds holding a Lower Cretaceous flora to 

 be considered is the small one on Redding Creek, near Doug- 

 las City, Trinity County, California. It is said that the beds 

 at this locality lap over the crest of the Coast Range from the 

 Sacramento Valley, and are of the same age as the beds in the 

 latter area. The flora is a small one, comprising only the fol- 

 lowing species : 



Sagenopteris oregonensis Font. 

 Sagenopteris elliptica f Font. 

 Gleichenia? Gilbert- Thompsoni Font. 

 Gladophlebis heterophylla Font. 

 Sequoia JReichenbachi (Gein.) Heer. 



These specimens, with the exception of Oladophlehis heter- 

 ophylla, which is known from the Kootenai and lower Poto- 

 mac, are all reported by Fontaine and the writer from the 

 Lower Cretaceous flora of the localities along the western side 

 of the Sacramento Valley, in direct connection with these beds, 

 as stated above. 



The fauna associated with the plants embraces Pecten 

 ojoerculiformis, Trigonia leana, Cardittm f, Corhula, and 

 Pleuromya papyraeea, and is regarded by Doctor Stanton as 

 belonging to the lower Horsetown. 



Table showing Local Distkibution of the Jurassic Flora. 



As a preliminary to the proper consideration of the Jurassic 

 flora in all its aspects, we may first present a table which gives 

 a complete list of forms known, together with their distribution 

 among the several localities in Oregon and California. The 

 number, or numbers, opposite each species, refer to the locali- 

 ties as follows : 



1 = Thompson Creek, Oregon. 



2 = Buck Peak, Oregon. 



3 = Nichols Station, Oregon. 



4 = Elk River, Oregon. 



5 = Big Bar, California. 



6 = Rattlesnake Creek, California. 

 T = Oroville, California. 



Marehantites erectus (Bean) Sew., I. 



DicJcsonia oregonensis Font., 1, 2, 4, 5. 



Goniopteris hyniejiophylloides (Brongn.) Sew., 3, 7. 



Thyrsopteris Murrayana (Brongn.) Heer, 1, 3, 4. 



Polypodium oregonense Font., 1, 2, 3, 4. 



Gladophlebis vaccensis Ward, 1, 2, 3, 4, 5, 7. 

 " haiburnensis (L. & H.) Br. ? 1, 



" acutiloba (Heer) Font., 1, 3. 



