Whitfieldoceras mumiaforme
Apparently Whitfieldoceras mumiaforme lasts into Decorah Formation from Platteville formation. This specimen has barely visible septae and is very thin. Seem to have enlargement on the left side which is constant with Whitfieldoceras and a bend along a certain portion of the shell. Ordovician, Decorah Formation, Twin Cities Minnesota. Rare.
Photo Information
- Taken with samsung Galaxy A54 5G
- Focal Length 5.5 mm
- Exposure Time 1/30
- f Aperture f/1.8
- ISO Speed 250