The actual pdf from ‘Antiquity Journal’:
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/1EE151AB1E571968B10267E48B78362A/S0003598X18000480a.pdf/early_art_in_the_urals_new_research_on_the_wooden_sculpture_from_shigir.pdf
That is a very interesting article. It explains in some detail how they came up with the latest estimate for the age of the sculpture.