Figure 3 in Dinosaur Census Reveals Abundant Tyrannosaurus and Rare Ontogenetic Stages in the Upper Cretaceous Hell Creek Formation (Maastrichtian), Montana, USA

Figure 3. Tyrannosaurus (MOR 1125, ''B-rex'') teeth from the lower jaw of this medium-sized skeleton illustrate the extreme range in overall tooth size within one individual. A. A smaller posterior tooth from position #14 from the front of the jaw. B. A larger tooth from position #4 in the same jaw. This demonstrates why shed dinosaur teeth are not a reliable indicator of relative skeletal size and ontogenetic age. doi:10.1371/journal.pone.0016574.g003Published as part of John R. Horner, Mark B. Goodwin & Nathan Myhrvold, 2011, Dinosaur Census Reveals Abundant Tyrannosaurus and Rare Ontogenetic Stages in the Upper Cretaceous Hell Creek Formation (Maastrichtian), Montana, USA, pp. 1-9 in PLoS ONE (e16574) 6 on page 6, DOI: 10.1371/journal.pone.0016574, http://zenodo.org/record/374491