47
Hickorynut, Obovaria olivaria
Mississippi River, Rock Island County, 60mm
Mississippi River, Rock Island County,
60mm, dorsal view
Mississippi River, Rock Island County,
60mm, anterior view
Archeological site 25SY1:
26/3, 56mm
Big Blue River, Gage County
Mississippi River, Rock Island County, 60mm, anterior end is to the left
