PLANT BEBS OF ELK RIVER 377 



are underlain on the South fork by a heavy mass of conglomerate con- 

 taining in its lower part many large pebbles of the greenstone like that 

 on which the conglomerate rests at the base of the "Myrtle." No plants 

 were found in the basal conglomerate, though it contains many examples 

 of Aucella crassicoUis. 



FOSSIL PLANTS 



The fossil plants were found in place as well as in many loose pieces 

 along the bed of Elk creek from near the mouth of Blackberry creek to 

 the forks and up the North fork at least a mile and a half. On the South 

 fork the plants have not been found farther than 200 yards above the 

 forks. All the beds above that point lie beneath the plant beds. 



The first collection of fossil plants from this locality was studied by 

 Professor Fontaine, who identified the following species : 



Dicksonia oregonensis Font. 



Thyrsopteris murrayana (Brogniart) Heer ? 



Gladophlehis vaccensis Ward. 



Gtenis sulcicaulis (Phillips) Ward ? 



Gtenophyllum ? n. sp. ? 



Podozamites lanceolatus minor (Schenk) Heer ? 



Otosamites oregonensis Font. n. sp. 



Taxites tsamoides (Leckenby) Seward. 



The collection recently made by Mr Storrs was examined by Dr F. H. 

 Knowlton, who identified the following forms : 



Yuccites hettangensis ? sp. 

 Sagenopteris pauci folia (Pbill.) Ward. 

 Sagenopteris goppertiana Zign. 

 CladophleMs pecopteroides ? Font. 

 Dicksonia oregonensis Font. 

 Gtenophyllum angustifolivm Font. 

 Nilsonia parvula (Heer) Font. 

 • Nilsonia orientalis minor Font. 

 Nilsonia sp. ? 



Twniopteris ? oregonensis Brogn. 

 Hausniannia sp. 



Podozamites lanceolatus latifolia (Br.) Heer. 

 Podozamites sp. 



Both sets of fossils were collected along the same portions of the stream 

 beds, and it is rather surprising that only one species, namely, Dicksonia 

 oregonensis Font., occurs in both lists. It is to be noted, however, that 

 ibis is the most common form. The flora contains 20 species, all of 

 which, according to Doctor Knowlton, "with the exception of the un- 



