From Tegana Formation, North Africa Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15 metric tons.This tooth is from a large Carcharodontosaurus...

From: Two Medicine Formation, Teton County, Montana Albertosaurus is a genus of tyrannosaurid theropod dinosaurs that lived in western North America during the Late Cretaceous Period, about 70 million years ago.   23.3 grams, Display measure: 3.5 x 1 x 4.75 inches

From Tegana Formation, North Africa Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15 metric tons.This tooth is from a large Carcharodontosaurus...

Age: Cretaceous Age 67.5 - 65 Million years old From: Hell Creek Formation, Harding County, South Dakota Nanotyrannus ("dwarf tyrant") is a potentially dubious genus of tyrannosaurid dinosaur. It is known only from two specimens (possibly three), which are potentially juvenile specimens of the contemporary genus Tyrannosaurus rex.   23.3 grams,...

Age: Cretaceous Age 67.5 - 65 Million years old From: Judith River Formation, Blaine County, Montana Nanotyrannus ("dwarf tyrant") is a potentially dubious genus of tyrannosaurid dinosaur. It is known only from two specimens (possibly three), which are potentially juvenile specimens of the contemporary genus Tyrannosaurus rex.   23.3 grams, Display measure: 3.5 x 1...