• @Spaceballstheusername
    link
    21 year ago

    Since we only found 3 trex skeletons how could we know if their young grew fast?

    • Tlaloc_Temporal
      link
      fedilink
      11 year ago

      We have over 40 T. rex specimens, and many more Tyrannosaurs. We can age them and observe growth rates by measuring bone rings, just like tree rings. Jane and Petey in particular had lots of new bone growth when they died as adolescents.