What does the existence of multiple species within the genus, like *Waimanu handleyi*, suggest about this early lineage?

Answer

That the group was already experiencing some degree of adaptive radiation.

The discovery of several closely related species within a narrow geological window suggests that *Waimanu* was actively branching and diversifying rapidly to suit local environmental conditions.

What does the existence of multiple species within the genus, like *Waimanu handleyi*, suggest about this early lineage?
evolutionmammalfossilWhaleWaimanu