Interest
Even if the "Precambrian rabbits" turned out to be genuine, they would not instantly refute the theory of evolution, because that theory is a large package of ideas, including: that life on Earth has evolved over billions of years; that this evolution is driven by certain mechanisms; and that these mechanisms have produced a specific "family tree" that defines the relationships among species and the order in which they appeared. Hence, "Precambrian rabbits" would prove that there were one or more serious errors somewhere in this package, and the next task would be to identify those errors.[2] '
Interesting acknowledgment. I would also add that undoubted “fossil rabbits in the Precambrian” could also be explained by moving the date of rabbit evolution back in time. This is already done (on a less dramatic scale) when fossils are found in strata believed to be older than when it was previously believed that they evolved. This is sometimes called a “range extension.”
It would be a large time adjustment (within evolutionary geology) for rabbits, possibly requiring the assumption that all mammal, and reptile evolution had occurred much earlier than believed previously, so it could require significant, huge adjustment.
But evolutionary theory itself doesn’t exclude early fossils found from being complex, or being mammals,