Answer:
blank #1= cretaceous period of the mesozoic era
blank #2= cambrian period of the paleozoic era
blank #3= We are currently living the Quaternary Period or the Cenozoic era. There was no mass extinction event that ended the Tertiary Period and started the Quaternary Period / Cenozoic era. Instead, the division between the two periods is somewhat ambiguous and often argued by scientists.
I tried my best but I can't figure out the chart part, sorry :/
