Name: Scaphites nodosus Age: Upper Cretaceous, Maastrichtian Provenance: Pierre, South Dakota, USA
Ammonite is 6.2 cm. As can be seen, this specimen is on its gangue. There are some gaps at the ventral area (see photos) and I think the ammonite has been glued back on the stone. The front side is nevertheless extremely well preserved. It is a beautiful sample of an unusual ammonite.
Name :Crioceratites nolani Age : Cretaceous , Hauterivian stage Location : Arpavon , Drôme , France Comments : The ammonite has a size of 3.8 cm. It is onto its natural matrix without reglue nor restorations. The spines are original. Weight : 282 gr Overall size : 8.5 x 7.2 x 2.4 cm
Name : Heterotissotia bucheri Age : Upper cretaceous , Coniancian Location : Cajamarca, Peru
The ammonite has a size of 6,4 cm ! It has nice preservation of the typical suture lines and a half whorl of the living chamber.This is one of the rare species.
The ammonite measures 22.5 cm and weighs 2420 g. It hasn't been polished , and both sides are cleaned . It shows iridescence and an overall outstanding preservation. Big part of the shell is preserved