Poebrotherium

[Jackie Hamptman <jhamptma@xxxxxxxxxxxxxxxxxxxxx>]

Greetings.  I am looking for additional citations or related information 
about Poebrotherium in the Chadronian.  Emry, Russell, and Bjork (p. 142, 
Chadronian, Orellan, and Whitneyan Land Mammal Ages, chpt. 5, Cenozoic 
Mammals of North America) cite Wilson (1974) when they write that 
Poebrotherium is knowm far back into the Chadronian.

I have the Wilson citation, but I would like to find out more.  I have 
tapped my resources here.  Thank you ...any leads will be helpful.

Jac. Hauptman (not Hamptman).