Pudoproetus sp.
Trilobite

Mississippian
Osagean Series
Fern Glen Formation
Jefferson County, Missouri

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Pudoproetus sp.

Order: Proetida
Superfamily: Proetoidea
Family: Proetidae
Species: Pudoproetus sp.

The hypostome on this specimen is remarkable

Your trilobite is a species of the genus Pudoproetus.
I don't recall the species. It is, of course, as you mention
a member of the family Proetidae. There is a Fern Glen
masters thesis, that was done at Rolla (UMR) I believe
either in the late 50's or early 1960's.
Dr. Bruce L. Stinchcomb

Viewer Comments:

#1
Reference concerning Pudoproetus
Feist , Raimund & Petersen , Morris S.;1995: "Origin and
spread of Pudoproetus, a survivor of the Late Devonian
trilobite crisis" Journal of Paleontology 69 (1). p 99-109

#2
It is probably Pudoproetus fernglenensis (Weller, 1909) which is
found in the Fern Glen Formation, St. Louis County, Missouri.
Reference:
Hessler (1963) Lower Mississippian Trilobites of the
Family Proetidae in the United States,
Part I. Journal of Paleontology 37(3):543-563.

Credits:
Collected and prepared by Carl Cook
Thanks to Dr. Bruce L. Stinchcomb for his identification

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Fern Glen Formation

Mississippian Fossils of Missouri