18KcK2 Nilssonia cf. orientalis Heer Nilssonia cf. orie3

 

Locality

18KcK2. Tuktu Bluff. Chandler River.

Locality Map

 

Remarks

This specimen has an ambiguously preserved apex. N. yukonensis has a distinct sinus according to Hollick's (1930) description. This apex may not have such a sinus. However N. orientalis, to which Smiley assigned this specimen, is predominantly a Jurassic form.