Cephalopods Present and Past New Insights and Fresh Perspectives.

Edited by: Neil H. Landman, Richard Arnold Davis and Royal H.

An excellent identification manual for the ammonites of the Pierre Seaway. Written by Neal Larson, vice-president of Black Hills Institute.

A wonderful pocket book for anyone interested in ammonites. Easy reading introduces these wonderful ancient creatures.

A technical bulletin on the ammonites of the Fox Hills Formation. The best resource of its kind.