So is there genetic proof or evidence of fish becoming land crawlers extracted from fossilized remains?
There's actually
incredible empirical evidence of this. So much so that it is a wonderfull example of just how extremely solid the explanatory power of the evolutionary model of biology actually is. It's pretty impressive.
So.... Using rough dates here for the sake of simplicity...
Before roughly 375 million years ago, there was only sea life and no animal land crawlers.
After roughly 375 million years ago, there were.
So... evolutionary scientists concluded that around the 370 million year landmark, there should be
transitional creatures in the process of evolving from fishlike vertebrates to land crawling vertebrates.
A whole list of expected traits was defined, including but certainly not limited to: the type of expected environment (in or near relatively shallow waters), physical traits (particularly concerning neck bones etc).
So, they consulted geologists (so we're cross scientific field here as well...) to find exposed rock from that particular time period which during that time would have been in or near shallow waters etc.
Such rock was identified and a team went there on a dig.
Lo and behold, they found tiktaalik. Previously unknown species, yet
exactly the type of organism that was predicted. In pretty much the exact location with pretty much the exact traits exhibited.
Pretty impressive if you ask me.
How come they were able to do this, if the underlying theory that was used to make this astonishing prediction, on which it is completely based on... is supposedly completely bonkers?