First, I designated “Glatorian/Agori” in the title because we don’t exactly know what the relationship between the two is; I’m going to assume that they’re genetically related enough to have these results apply to Agori as well. Chimpanzees can live up to 70 years in captivity, outliving many humans without access to modern medicine.
I will be using Gresh as a model for this. I will also be assuming that the Glatorian species ages at the same rate that humans do; this doesn’t necessarily need to be the case because there are many animals like turtles that reach adulthood faster than humans but survive in a mature/elderly state for much longer. This will require a lot of assumptions that I’m sure can be explained with more specifications about the species, however because this has not yet happened I’m gonna run with it anyway.
So, to cite an Ask Greg from the old LMB days, the human equivalent of Gresh’s age at the time of the restoration of Spherus Magna was “mid-twenties”. Let’s say 25, right in the middle. Now, we need to compare this with the fact that Gresh was alive during the Core War. What we have from the Greg quote is “He was alive but too young to fight.” So this gives us a range to work with; anywhere between a newborn and, say, 15 or 16. It could be that, like many real-life countries, the Elemental Lord of Jungle levied younger soldiers as the circumstances of the war became more extreme. Still, I think 15 or 16 would be about the age that a male human could potentially operate as an effective soldier; Glagori society was based on Greco-Roman customs, and 16 corresponds with the age that Roman soldiers could be recruited, so we’ll run with that.
This means that, going proportionally, if Gresh was a newborn in the Core War then 1 human year would equal 4,000 Glagori years. If Gresh was a teenager who was still too young to fight, 15 human years, then 1 human year would equal 10,000 Glagori years.
Not adjusting for infant mortality, and assuming that Glagori society was able to care for people up to the average human lifespan of 70 seeing as how Raanu was 60 human years at the time of the Reunification Event, this would put the average Glagori lifespan anywhere between 280,000 and 700,000 years. A pretty wide margin of error, but both extremes of this range are equally boggling for the minds of us fleeting humans to comprehend. In Earth terms, a single generation of Glagori that dies of natural causes today was born in the Pleistocene epoch; before the extinction of Homo erectus, and possibly contemporaneous with the lifetime of anatomically modern humans’ and Neanderthals’ most recent common ancestor.
Lizard-people, amirite?