UK Ammonite Placenticeras IF-UKA-16-016 Upper Cretaceous This specimen has excellent preservation

This specimen has excellent preservation and detail for this locality

It is now common scientific opinion that Seismosaurus hallorum is a species of Diplodocus

feeding on other small Mioplosus

dentisulcatus was larger

The strength of the teeth indicates that Camarasaurus probably ate coarser plant material than the slender-toothed diplodocids

UK Ammonite Placenticeras IF-UKA-16-016 Upper Cretaceous This specimen has excellent preservationPlacenticeras meeki Pierre Formation Upper Cretaceous (Campanian) Meade County, South Dakota This example of P. meeki has the original shell with some good red and green iridescence. The shell is thin in some areas and the underlying sutures are visible. The specimen is prepared on its original matrix and is a very good display. The ammonite is 8. 5 inches across. There is a sliver of restoration along the venter (see illustrated photo). The innermost