[stands2reason]

I think the Cambrian Explosion should be referred to by it's more factual name: the Cambrian Explosion of Fossils.

[furball4paws]

Precisely.

[Sopater]

I think the Cambrian Explosion should be referred to by it's more factual name: the Cambrian Explosion of Fossils.

Very true. The fossil record is a very poor indication of dates that various species may have disappeared from (or for that matter appeared on) the face of the planet as this List of Living Fossils clearly shows.