They all were found in the informal Calathium Calcisiltite Member of the Fillmore Formation, in the Ibex region of western Utah. Of course it is a secret spot and if I told you exactly where it was I would have to make a call and have something done about it
By the way, they were not collected, just photographed in the field and marked with a GPS.
The first two I would just have to say Protocyclocerid, could be either Protocycloceras or Catoraphiceras but I cant see the sutures, Catoraphiceras would have a ventral saddle.
The big one is probably some form of Ellesmerocerid.
An ammonoid body chamber found last weekend. An Arctocerid probably churkites. Like the others, the body chamber filled with mud that partially lithified, protecting it from the crushing weight of the sediment. Unlike most of the others, the phragmocone left an impression in the soft muddy bottom which also partially lithified, or at least got hard enough to protect it.
Also a photo of Jim Jenks, a fellow triassic ammonoid enthusiast.