I'll tell you,
ket. The skies turned dark and the weather got cold. The dinos were lazy, and didn't adapt well to the consequences of the big rock impacts (e.g., Chicxulub) and the Deccan vulcanism around the K-T boundary; birth rates dropped precipitously.

As
busetibi notes, it's
wombat70 who holds the age record. He can probably tell you about the Cambrian trilobites. The rest of us are young'uns, relatively speaking, even if our bodies are barely sustaining us.
"There are old pilots, and there are bold pilots, but there are no old bold pilots." But there's
rockingmtranch,
fatrap, and
grump642, among the very few who can tell us about facing death.