Polished 10 1/2" Ammonite (Choffaticeras?) - Goulmima, Morocco

This is a huge, polished 10.5" wide ammonite collected North of Goulmima, Morocco. These ammonites are Upper Cretaceous (Early Turonian Stage) in age. The genus of this specimen is Choffaticeras, one of the larger ammonites from the locality.

The scientific paper describing this ammonite assemblage can be found at: http://data.over-blog-kiwi.com/0/52/28/44/ob_159f69_kennedy-et-al-2008-goulmima.pdf