Never heard of fossil reworking? Out-of-order fossils are found all the time but are explained-away as being reworked. 'Older' fossils into 'younger' beds as well as 'younger' fossils into 'older' beds.
The whole fossil 'record' is simply a mental construct. The precambrian doesn't exist except in people's minds.
How about the Earth going around the Sun - does that not exist except in people’s minds?