It’s important to note that the “true tempo of early animal evolution” exists in evolutionists’ imaginations, not in the rocks.
The standard evolutionary model is incapable of driving major transformations such as a fish evolving into an amphibian.
Trilobites look up silently from their Burgess Shale rock slabs, with sad eyes, asking, “Where did I come from?”
True arthropods are among the most sophisticated animals that appeared without ancestors in the Cambrian explosion.
Many claim the Cambrian explosion was triggered by a sudden global increase in oxygen levels.