The fossil record in the theoretical geologic column shows that sea creatures are at the bottom of the sedimentary rock layers, which evolutionists claim as evidence that they have been in existence the longest because the lowest layers of sedimentary rock are supposedly the oldest. This is also why evolutionists believe that life started in the oceans. As the “ages” of rock in the geologic column decrease, more complex fossils are found. What would cause this arrangement of fossils?
During Noah’s flood, you can imagine that the animals in the ocean were the first to be buried because they were at the lowest point of sea level. As the waters grew higher and higher onto the coast land and low lands, people and animals sought shelter at higher elevations. Animals that were slow moving were not able to make it to the higher land and were then buried by water and sediment. Humans, faster land animals, and birds were able to make it to the high land, but eventually they too were covered in the water and sediment, and some of them turned into fossils. The layers we see today in sedimentary rock were the result of hydrological sorting. Check out the following video at the bottom to see an experiment of such sorting. Go to 3:00 to see the experiment.
Another suggested article is here where it explains the layering of fossils, and it also includes a link to many out of place fossils along with references.