How long can the recovery of biodiversity take following ancient mass extinctions?
Answer
10 to 50 million years
Evidence suggests that recovery periods following past catastrophes, such as the P-T or O-S events, often required deep time, spanning 10 to 50 million years for biodiversity to return to pre-extinction levels.

Related Questions
What defines an event as a mass extinction rather than background extinction?Which of the five major mass extinctions is known as 'The Great Dying'?What massive geological feature is strongly linked to the Permian-Triassic extinction?What immediate global effect did the material ejected by the K-Pg impactor cause?Which gases are pumped into the atmosphere by extreme, sustained volcanism?What devastating ocean stressor results directly from volcanic gas emissions?How do massive ice sheets impact marine life during intense global cooling periods?What is a primary driver of the current, sixth mass extinction event?What distinguishes the pacing of the K-Pg extinction compared to the P-T extinction?How long can the recovery of biodiversity take following ancient mass extinctions?