We find plenty of arthropod / crustacean "living fossils" in the lower rock records. Virtually unchanged for 300-500 "million years". This is expected under YEC and runs completely counter to Evolutionary predictions.
If a certain creature is missing it could just be because that species did not happen to be fossilized or that we just have not yet found that fossil. Ya know, the explanation Evolutionists invoke on a constant basis?
Really? Please quote me a source on evolution that states that organisms are required to change. Because I'm pretty sure the theory says the change is in response to differential success at transmitting their genes. I notice you threw out this criticism to sidestep the point that was made about them, i.e. that they share the same environment as trilobites but never show up in the record with trilobites.
And as has been pointed out, it isn't "certain species" that are missing, it's entire groups of organisms. Like those pesky angiosperms for which you have no explanation.
Based on what? Are you kidding me? I actually have to explain the mobility differences between mammals and reptiles to you?
In other words, you actually have no evidence to support your claim that highly derive marine reptiles like ichthyosaurs were inferior to their mammalian counterparts. You think a sea otter could outswim an ichthyosaur?
I already explained two alternate hypotheses that Evolutionists were prepared to pursue. 1) Birds could have evolved from a proto-mammal instead of dinosaurs. 2) Mammals could have evolved from amphibians instead of reptiles.
And yet neither of these theories is the accepted view. Almost as if science is a self-correcting process that strives to conform to the evidence as best it can. Yes, yes, I know you have a problem with theories conforming to the evidence. Is that why you're so sanguine about your Flood model failing utterly to explain the fossil record?
You ever notice how evolutionists are always trying to explain the existence of large groups of fossils as being due to some kind of isolated mudslide or overflowing river?
Now why would they do that? If only there was some sort of way to quickly research this sort of thing. Oh wait, there is. It's called the internet and some minor use of it has furnished me with modern analogues that align perfectly with what we see in the fossil record:
Here you can read a rather florid description of a mass death of caribou crossing a flooded river in 1984.
"At least 9,604 caribou (by official count as of Sunday) and probably more than 10,000 died at Limestone Falls"
Note that while the scale of this disaster was unprecedented, large numbers of deaths were in fact common:
"Caribou have always died at Limestone Falls; perhaps 50 a year would perish there, maybe 100 or even 500 would drown when the summer rains had been particularly heavy."
And similar mass deaths are common for herds of wildebeest crossing rivers in flood.
Click through these images to see what happens when large numbers of otherwise competent swimmers try to cross together. When these mass death assemblages are buried by sediment, then you have the potential to get massive fossil bonebeds as seen in the fossil record.