248 REPORT UNITED STxVTES GEOLOGICAL SURVEY. 



contact with them, I found a small exposure of Fox Hills strata, which. 

 are composed of soft sandstones and, like the Laramie strata- there, they 

 are nearly vertical. From one of these Fox Hill's layers I obtained a 

 small collection of fossd shells, all of which are imperfect, and some of 

 the species which they indicate are not recognizable. The identification 

 of those of the following - list is i^robably correct, and shows an intimate 

 relation of these strata with those of the Coalville series. 



LIST OF CRETACEOUS FOSSILS FROM THE VALLEY OF BEAR RIVER, 



WYOMING. 



1. Ostrea ? 



2. Volselki (Brachydontes) multilinigera Meek. 



3. Wucula f 



4. Barbatia coalvillensis White. 



5. Cardium trite White ? 



6. Cyrena securis Meek. 



7. Tellina f modesta Meek. 



8. Tellina (Arcopagia f) utahensis Meek. 



9. Gorbula dubiosa White.* 



NOTES ON THE CRETACEOUS FOSSILS OF BEAR RIVER VALLEY. 



1. Ostrea ? 



The examples of this oyster are numerous and many of them well pre- 

 served, but they are all small, and so wanting in specific characters that 

 they cannot be satisfactorily identified with any published species or de- 

 scribed as new. They are possibly identical with 0. coalvillensis Meek. 



2. Volsella (Brachydontes) multilinigera Meek. 



This species was originally discovered by Meek at Coalville. It also 

 Occurs near Hilliard Station, four miles east of this locality. 



3. Nucula f 



The examples are too imperfect for specific determination. They in- 

 dicate a species much like N. planimarginata Meek & Hayden. 



4. Barbatia coalvillensis White. 



Hitherto discovered only at Coalville. (See remarks under head of 

 Cretaceous fossils of that locality.) 



5. Cardium trite White. 



The examples found here are only imperfect casts, but the surface 

 markings are more nearly like those of C. trite than those of either 

 C. curtum or G. subcurtum, the only two other species of Cardium that 

 are likely to be found in these strata. G. trite was discovered at the 

 head of Waterpocket Canon, Utah, by Mr. Gilbert, and is described 

 and figured in another part of this volume. 



6. Cyrena securis Meek. 



This .species has been discovered at Coalvdle and also at Hilliard Sta- 

 tion, four miles east of this locality. It is described and figured in 

 another part of this volume. 



7. Tellina ? modesta Meek. 



A Coalville species. (See remarks under that head.) 



8. Tellina (Arcopagia f) utahensis Meek. 



See remarks under notes on Coalville fossils. 



* See following remarks under No. 9. 



