116 DEPARTMENT OF THE INTERIOR 



2 GEORGE V., A. 1912 



Genera and species: 



1. Sponge-like organism. Long, slender cylindrical stem-like rods or 



spicules (?) Eyalostelia (?). 



2. Favosites sp. Compare Favosites limit arts, Rominger. 



3. Cladopora, one specimen. 



4. Atrypa aspera, Schlothurm. 



Station No. 1290.— Near meridian of 114° 33' W. Long.; four miles west 

 of the Flathead river, and one-half mile north of the Boundary line; 6,500-foot 

 contour. 



A limestone weathering rusty or brownish-yellow; specimens of fossils 

 silicified. 



Age: Upper Devonian. 



Formation : Jefferson limestone. 



Genera and species: 



1. Zaplirentis ( ?) sp. 



2. Atrypa reticularis, Linnaeus. 



3. Atrypa aspera, Schlothurm. 



The Mississippian fossils of the eastern block are listed, with locality 

 indications, by Dr. Ami, as follows : — 



Station No. 1285.— At 114° 32' 30" W. Long. ; two and a half miles west of 

 Flathead river, and one-half mile north of the Boundary line; 5,500-foot contour. 

 Age: Upper Mississippian. 

 Formation : Madison limestone. 

 Genera and species: 



1. Lithostrotion, sp. 



2. Syringopora, sp. 



3. Zaplirentis, sp. 



4. Menopliyllum, sp. 



5. Stenopora. 



6. Monticuloporoid. 



7. Composita, sp., aff. Composita trinuclea. 



8. (?) Reticularia, sp. 



9. Producta cora. 



10. Productus, sp. ; compare P. giganteus. Exhibits sculpture similar 



to that in English specimens. 



11. Camarotcechia, sp. 



12. Spirifer, sp. ; aff. S. Keokuk. 



13. Spirifer leidyi, or a very closely allied species, agreeing with Nor- 



wood and Pratten's description in nearly every detail. Middle 

 rib and sinus does not always extend to beak, Sometimes three 

 ribs of sinus equal; at other times one larger and two smaller, 

 etc 



