Other interpretations of the same paleomagnetic data draw the continental motion out over a much longer span. Even if the globe started tilting 535 million years ago, that shift could not explain the initial biological burst, which began some 10 million years earlier, at the opening of the Cambrian. It could have strengthened an event that was already occurring. Evidence for a large-scale reorganization of early Cambrian continental masses by inertial interchange true polar wander. Monastersky, R. 1994.
Fossils widen range of biological burst.
Siberian rocks clock biological Big Bang. Mysteries of the Orient.