So Noah's flood was 500 million years ago?<quoted text>
The Cambrian explosion was really the Cambrian extinction. The results if Noah's flood.
To make a fossil you must bury the dead fast else it just rots away.
There are jelly fish fossils from this Cambrian extinction. A pretty major event would be needed to make fossil all over the world of the same time period. We call it Noah's flood.
Do you know what that means?
Nobody was around to see it.