Whiterockian Series, Rangerian Stage
Zone L Cephalopods

Pictured below (naturally sectioned) are a few I have seen on top of a ledge of the Juab Limestone around Fossil Mt. in the Ibex area.

See Fossil Mountain Here

Catoraphiceras sp.
This specimen is 65mm long

Plectolites sp. 

Plectolites sp., this specimen is 104mm diameter a Tarphycerid
notice the dorsal location of the siphuncle

Rossoceras sp.
an Endocerid, the endocones in the very wide siphuncle are replaced with sparry calcite.

Closeup of Photo above

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