This was a joint event of the American Geophysical Union (AGU) and the Asia Oceania Geosciences Society (AOGS).

It appears that the researchers approached the matter with considerable professionalism, including taking great pains to eliminate contamination with modern carbon as a source of the C signal in the bones.

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In addition, multiple theories emerged as to how the bone fragment had come to be embedded in the mastodon rib, including an antelope attack.

Enter Texas A&M’s Mike Waters, who, in 2011, announced that he’d dated purified collagen in the bone, and that it was 13,800 years old.