This video is called Tiny Hedgehog Fossil Could Answer Climate-Change Questions.
From Wildlife Extra:
Fossils of tiny, unknown, hedgehog found in Canada
Named Silvacola acares, which means tiny forest dweller, it is perhaps the smallest hedgehog ever to have lived and is both a genus and species new to science.
“It is quite tiny and comparable in size to some of today’s shrews,” said lead author Jaelyn Eberle.
“We can’t say for sure it had prickly quills, but there are ancestral hedgehogs living in Europe about the same time that had bristly hair covering them, so it is plausible Silvacola did, too.”
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