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The Upper Pennsylvanian (Missourian) ammonoid Pennoceras from the North America midcontinent
D. M. Work, D. R. Boardman, and R. H. Mapes
2007
Article
Journal of Paleontology
81:591-596
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Taxa discussed in this work:
Pennoceras seamani
Syngastrioceras smithwickense
Taxonomy:
Pennoceras seamani
belongs to
Pennoceras
- Work et al. (2007)