From the Jurassic,Toarcian stage,tenuicostum zone.
Collected from Port Mulgrave Yorkshire,England.
One of the rarer Dactylioceratids,from the Lower grey shale's member.
This is a split nodule which has been prepared using air pens,and the matrix has been base cut to facilitate display
The ammonite measures 55mm and with the matrix is 60mm x 52mm.