Species: Nanotyrannus iancensis Age: Late Cretaceous (66 mya) Location: Brusett, Montana Formation: Hell Creek
Item #A113 Tiny Nanotyrannus iancensis tooth. The denticles (serrations) are in great condition on both sides with the occasional missing denticle here and there. The rich black enamel looks beautiful, with very little wear. A small chip at the tip was likely caused during hunting or feeding. This tooth was broken in half and glued back together. Dimensions are 63/128” x 17/64” x 15/128” or 12.55mm x 6.81mm x 2.89mm.
Nanotyrannus iancensis, which translates to “dwarf tyrant,” grew to be over 17’ in length, and weighed around 1 ton. Their smaller size and thin, curved teeth made them a more agile predator than the cumbersome T. rex.
Fun fact: There is a great deal of controversy over whether N. iancensis is a distinct species or merely a juvenile T. rex. Many paleontologists point to significant differences in tooth size, shape, and quantity to argue for the validity of the species.