|
Eutrephoceras dekayi Morton
YPM 30394 Late Cretaceous, Fox Hills Fm, Trail City Mbr. Protocardia-Oxytoma assemblage zone, Dewey Co., South Dakota, USA. Collector: Ross, H. |
| W.K. Sacco, photo |
|
|
Eutrephoceras dekayi Morton
YPM 30394 Late Cretaceous, Fox Hills Fm, Trail City Mbr. Protocardia-Oxytoma assemblage zone, Dewey Co., South Dakota, USA. Collector: Ross, H. |
| W.K. Sacco, photo |
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