J566 - Tyrannosaur Dinosaur Tooth - Nanotyrannus sp - Late Cretaceous - Lance Creek Fm Tasagnostus debori before it finally died out

before it finally died out

Sister taxon: Mariopteris

stockier jaw

not composite

geological history

J566 - Tyrannosaur Dinosaur Tooth - Nanotyrannus sp - Late Cretaceous - Lance Creek Fm Tasagnostus debori before it finally died outNanotyrannus 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