Mr Maussan said the specimens had been analysed by the Autonomous National University of Mexico (UNAM), where scientists had been able to extract DNA and use radiocarbon dating to establish an age.

Source: https://metro.co.uk/2023/09/13/alien-bodies-unveiled-in-mexican-parliament-19491228/

The team then measured radiocarbon concentrations in the wood, allowing them to pinpoint the year each tree fell from its roots.

Source: https://www.dailymail.co.uk/galleries/article-12575107/Seattle-hit-MEGAQUAKE-experts-two-fault-lines.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

The University of Maiduguri conducted an initial investigation of the site in 1989 and 1990 to determine if it was a canoe and to take radiocarbon dating samples of the wood.

Source: https://leadership.ng/inside-yobes-15-tourist-attractions-cultural-events-and-the-incredible-8000yrs-dufuna-canoe/