According to the Britannica the Cambrian explosion occurred between 530 and 541 million years ago. Other sources say it lasted for 15 to 30 million years. Yaknow, that's quite a stretch of time considering mankind has only been on Earth for maybe 1 million years. Lots of time for a Creator to experiment, maybe even entertain Him or Her self with their creations. Something like what we are doing now with our robots. Personally, I don't believe a word of so called evolutionary theory. Naturally, as a Christian I am a creationist. All of that experimental life was wiped out during the Time of Noah. A few of the great beasts survived to be killed later by people like St George.
Total length of time for all of this to happen? Most creationists say about 6 thousand years. I'm will to concede that it might have taken 40 to 60 thousand years. These are the ages that carbon dating of dinosaur fossils reveal. Some fossils still contain soft tissue.
Well, it's easy to argue as if time (and for that matter, space) is real rather than a framework imposed on reality by our perceptions, and, indeed, built into our language structures. Hence, it becomes very difficult, if not impossible, to talk in non-spatiotemporal terms.
If there is no actual space and time, then every"thing" that "has ever existed" was maybe "created at once" and all living things "past, present and future" are the one organism, albeit that each experiences a seemingly individual existence for a limited period. That raises issues about free will and so on, but then free will is another concept that depends on antecedent concepts of space and time.
I suspect that God or Mind At Large (M@L) or whatever you care to name The Ultimate doesn't possess a consciousness that is like ours. Being an Idealist, I think in terms of our being dissociated alters of M@L; and of that very dissociation being the cause of the kind of limited metaconsciousness we seem to have. Whereas M@L can simply will something to be, we have to use our metaconscious ability allied with what appears to be our bodies and perceptions in order to create the limited things we can, always within the ordered patterns and regularities of the universe/M@L.
When people talk in terms of really quite literal interpretations of the Bible as well as of events that many take as mythical, I sometimes wonder if they couldn't stop to consider the possibility of this being the result of their imposing on reality not only spatiotemporal, but also narrative, frameworks. I'm not saying that the frameworks are necessarily all bad, but at best, maybe they're just metaphors or analogies.
Switching out of my attempt at "non-spatiotemporality" and lapsing back into ordinary language, I'm not sceptical about evolution, but I am very sceptical about Darwinian explanations for it, or at least for macro- (as opposed to micro-) evolution. I believe that in some sense there has to be intention and telos involved somewhere along the line.
By the way, I'd be interested in seeing a link for your claim about the carbon-dating of dinosaur remains. It's not so much that I doubt what you are saying, as that I'm genuinely interested to evaluate this evidence for myself.