Edited by oilshale
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By oilshale (edited)
Orthoconic Nautiloid Cephalopod
Kingdom: Animalia
Eon: Phanerozoic
Era: Paleozoic
Period: Carboniferous
Sub Period: Mississippian
Epoch: Late
International Age: Serpukhovian
Big Snowy Group
Heath Formation
Bear Gulch Bed
Acquired by: Purchase/Trade
Length: 80 mm
Width: 20 mm
Bear Gulch
Fergus County
Montana
United States
With soft part preservation.
Lit.:
Landman, N. H., and R. A. Davis, 1988. "Jaw and crop preserved in an orthoconic nautiloid cephalopod from the Bear Gulch Limestone (Mississippian, Montana)."
Mapes, R. S. 1987. "Upper Paleozoic cephalopod mandibles: frequency of occurrence, modes of preservation, and paleoecological implications". Journal of Paleontology 61: 521-538.
Edited by oilshale
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