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"the first major blossoming of modern biodiversity."

What does "modern" mean in this discourse?

Life before the Cambrian was weird, and does not fit neatly with the type of live and diversity we see from the Cambrian til now.

Most of the major phyla that exist today established themselves during the Cambrian explosion.

So "modern" is a synonym for "current" here, if one puts aside warnings about its decline due to human activity?