Assertion: mastodon's bone | /r/CapableOf | offer evidence of a human presence
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text: Even before the publication of the San Diego mastodon paper, its lead author, Dr. Steven Holen, and one of his fellow authors and wife, Dr. Kathleen Holen, archaeologists at the Center for American Paleolithic Research in Hot Springs, South Dakota, had already been arguing that broken bones at several sites, mostly of mammoth, offer evidence of a human presence south of what is now