Tyrannosaur Tooth (Nanotyrannus lancensis)

A tooth from the "dwarf Tyrant" tyrannosaur, Nanotyrannus lancensis.

Nanotyrannus is now widely recognised as a distinct genus of tyrannosaurid, following a landmark 2025 study of the "Dueling Dinosaurs" specimen. Long debated as a juvenile T. rex, histological analysis of bone growth rings confirmed these animals were nearly full-grown adults, not fast-growing youngsters. More agile and slender than its famous cousin, Nanotyrannus was a swift, pursuit-style predator with proportionally longer arms, a narrow snout, and a higher tooth count, carving out its own unique niche in the Late Cretaceous ecosystem.

This particular tooth comes from the Hell Creek Formation in Carter County, Montana. This formation was laid down by ancient floodplains in the Late Cretaceous and preserves fossils of Triceratops and Tyrannosaurus, as well as many other well known dinosaurs. Its top, the K-Pg boundary, marks the asteroid impact that ended the dinosaurs.

This is a nice tooth with good enamel and serrations. It comes stored in a display box featuring the specimen name, region it was found, age and a QR code linking to some information about Nanotyrannus (fossil can be removed from the box).

This is genuine fossil. All the specimens we offer come with a lifetime authenticity guarantee.

Condition: Good | Size: 0.5 inch | Age: 68 - 65.5 Million Years | Found: Carter County, Montana (Hell Creek Formation)