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Prehistoric Human Jawbone Found in Iowa River

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A jawbone found in Iowa last month belonged to a prehistoric man, authorities have determined.

On August 11 the Marshall County Sheriff’s Office said: conservation personnel found a possible human lower jawbone in the Iowa River. Although it was intact, officials said it had deteriorated so much that they thought it was a few years old. Three other potential human bones were also found in the area.

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According to the Marshall County Sheriff’s Office, a prehistoric human jawbone was found in the Iowa River in August 2022.

Marshall County Sheriff’s Office


The Marshall County medical examiner was contacted and authorities began investigating the findings.

Over a month later, the sheriff’s office said on Wednesday: that the jawbone probably belonged to a middle-aged and older prehistoric Native American man. The bone was studied by the Office of the State Archaeologist at the University of Iowa.

According to the sheriff’s office, the other three bones were not human.

Archaeologists are likely to conduct further analysis on the jawbone, the sheriff’s office said.

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