Yes, it is certainly an interesting long list of longevity dates. However, I noticed MANY types of snakes listed that were nowhere close to even being as old as some of the snakes I am aware of in captivity. Heck, the oldest splendida there only has 12 years ten months as the oldest there, and I know for a fact that Brian Hubbs captured a 36" splendida in 1986, and now 24 years later, I think he still has it and is doing quite well.
And I think Tim Spuckler has a 20 year old Honduran as well, and the oldest one in that data was only 15 years 5 months. Heck, I have a 13 year old anerythristic Honduran myself!
The problem being, it is virtually impossible to get accurate and updated data for that because there are so darn many sources that are not known about, so the info is extremely limited. Nonetheless though, some of the dates were very impressive indeed, but I am sure that there are many ages listed that are far shy of actual known age records for many snakes. And some could have very well been from the recorded ages. I know the 40 plus years for the Boa constrictor was accurate too, because there was one at the Philadelphia zooological park that died at 40 years and several months in I think 1977.
~Doug
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"a snake in the grass is a GOOD thing" 
my website -serpentinespecialties.webs.com