WALNUTS AND HICKORIES BERRY. 



321 



Over a score of fossil species have been described. Unlike the 

 walnut the hickory is not known with certainty from the Cre- 

 taceous, but it is present in very early Eocene deposits in Wyoming 

 and on the Pacific coast. Hickories occur in the upper Eocene of 



Central Europe and there is a fine large leafed species from deposits 

 of this age at Kukak Bay, Alaska. The Oligocene occurrences 

 are largely referred to Hicorid ventricosa which is abundantly 

 represented by leaves and fruit in the Oligocene browncoal deposits 

 44863°— SM 1913 21 



