Roadian (Early Permian) Ammonoid

The Meade Peak Tongue of the Phosphoria Formation contains crushed ammonoids. It is exposed in the Right Hand Fork of Hobble Creek east of Springville.  It was deposited in deep water of the Oquirrh Basin.
References:Yochelson, E. L., 1968, Biostratigraphy of the Phosphoria, Park City, and Shedhorn Formations, U.S.G.S. Professional Paper 313-D; Mikesh, D. L., Glenister, B. F., and Furnish, W. M., 1988, Stenolobulites n. gen., Early Permian ancestor of predominantly Late Permian paragastrioceratid subfamily pseudogastrioceratidae, Univ. of Kansas Paleontological Contributions, 123; Closs, Darcy; Mackenzie Gordon, Jr.; Ellis L. Yochelson, 1964, Cornaptychi from the Permian of Utah, Journal of Paleontology, Vol. 38, No. 5.; Kullman, J., Korn, D., and Petersen, M. S., 2000, GONIAT Database System, version 2.90, Tubingen

Impression of the crushed shell of 
Stenolobulites sinuosus? Mikesh, Glenister and Furnish, 1988


Referred to Cornaptychus by Closs, Gordon and Yochelson in 1964
this would be one half of the lower jaw or beak and maybe would have been used as an operculum to close off the aperture of the shell.
probably from


another crushed shell.

Crushed specimens of Stenolobulites sinuosus? Mikesh, Glenister and Furnish, 1988
The large one is 52mm dia. the small one is 9mm dia.

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