04946 - Stunning Heteromorph Ammonites Ancyloceras sp 3.39 Inch Lower Cretaceous Prognathodon anceps as the Atlantic ocean was

as the Atlantic ocean was widening

Onchopristis may have raked through the riverbed to find and then eat prey

forming the Tetis Sea

Calvo and Salgado 1996

It has a tiny glued fracture

04946 - Stunning Heteromorph Ammonites Ancyloceras sp 3.39 Inch Lower Cretaceous Prognathodon anceps as the Atlantic ocean wasThe Ancyloceratina were a diverse suborder of ammonite most closely related to the ammonites of order Lytoceratina. They evolved during the Late Jurassic but were not very common until the Cretaceous period, when they rapidly diversified and become one of the most distinctive components of Cretaceous marine faunas. They have been recorded from every continent and many are used as zonal or index fossils. The most distinctive feature of the majority of