Smilodon gracilis ("the slender Smilodon") was the smallest and earliest of the sabertooth cats. It first appeared in the United States about 2.5 million years ago and lived until about 500,000 years ago.
... the age of 18, 6.7% from 18 to 24, 28.0% from 25 to 44, 25.8% from 45 to 64, and 17.2% who are 65 years of age or older. The median age is 41 years. For every 100 ...