Fossils of land animals are scarcer than those of plants. In order to become fossilized, animals must die in a watery environment and become buried in the mud and silt. Because of this requirement most land creatures never get the chance to become fossilized unless they die next to a lake or stream. http://scienceviews.com/dinosaurs/fossilformation.html
In order to create a fossil record that comes close to duplicating what we have--we need to bury the fossils rapidly in a watery environment before they decay. For this to happen on a large scale there needs to be a massive water catastrophe. Millions of years are not required for a massive fossil grave yard but a water catastrophe is. And there needs to be an event which shepherds the animals together into one location.
It was admitted that fossils are forming today--which is true with the right conditions--which certainly means we don't need millions of years to create fossils.
But the ages of the various fossils differ by, in many cases, hundreds of millions of years (confirmed by radiometric dating), e.g., a fossil of a Dimetrodon vs a fossil of a Neanderthal man.
