Imagine you are a scientist studying two different T. rex fossils. Observations from one fossil suggest it is from a T. rex with a body mass of about 2,000 kg.
The other fossil is from a T. rex with a body mass of about
3,500 kg.
Based on the growth curve data, what is the age difference between these two fossilized dinosaurs?
Why can you assume the larger T. rex is more mature, not just bigger? Defend your answer using evidence from the graph.