Forum:SH Archive/Species lifespans

Is there a reason the species pages do not list known lifespans? I once owned both Alien Anthology and Ultimate Alien Anthology, and I remember that average lifespans, with detailed ageing information, were listed -- it may also have been included in more recent sources that I am not aware of. --R5-X41238-G8-R3-3124-D2 17:04, March 17, 2012 (UTC)