Mammals began a rapid diversification during this period.

The available evidence indicates that eukaryotes evolved much earlier but remained inconspicuous until a rapid diversification around 1 Ga.

During the Cambrian period it experienced a rapid diversification into most major phyla.

Their rapid decline and disappearance coincided with a rapid diversification of the Demosponges.

Greyhound's rapid diversification and frequent unit restructurings led to erratic profitability.

Thus, species associations can lead to rapid diversification of both lineages and contribute to overall community diversity.

"We've known there had to be rapid diversification of life at that time," he said.

The divisions of the time scale are set at these major punctuations because extinctions and rapid diversifications leave such clear signatures in the fossil record.

The rapid diversification of the metazoa followed.

These difficulties in interpreting the systematics of Cornales may represent an early and rapid diversification of the groups within the order.