J561 - Tyrannosaur Dinosaur Tooth - Nanotyrannus sp - Late Cretaceous - Lance Creek Fm Altiocculus harrisi feldspars and altered olivines represent

feldspars and altered olivines represent

Journal of Paleontology 74 (2): 309–16

Observations: With absence of marked longitudinal striae

McCollum 2000

J561 - Tyrannosaur Dinosaur Tooth - Nanotyrannus sp - Late Cretaceous - Lance Creek Fm Altiocculus harrisi feldspars and altered olivines representNanotyrannus lancensis is a small, fast, agile tyrannosaur from the Late Cretaceous Hell Creek Formation (originally part of the Lance Formation), known for being small and distinctly different from T. rex, with recent studies confirming it's a separate species, not a juvenile T. rex, based on unique features like more teeth, larger hands, and distinct bone structures. Meaning "dwarf tyrant," it was a capable predator of smaller prey, coexisting with