Tyrannosaurinae is one of the two extinct subfamilies of Tyrannosauridae, a family of coelurosaurian theropods that consists of at least three tribes and several genera. All fossils of these genera have been found in the Late Cretaceous deposits of western North America and east Asia. Compared to the related subfamily Albertosaurinae, tyrannosaurines overall are more robust and larger though the alioramins were gracile by comparison. This subfamily also includes the oldest known tyrannosaurid genus Lythronax as well as the youngest and most famous member of the group, Tyrannosaurus rex. There were at least 30 different species of tyrannosaurines.
Image: Alioramus remotus Skull
Image: Tyrannosaurus rex theropod dinosaur (Hell Creek Formation, Upper Cretaceous; near Faith, northwestern South Dakota, USA) 2 (15157270200)
Deinodon teeth, the earliest known tyrannosaurid remains
Skeletal diagrams showing holotype remains of Lythronax (A) and a Teratophoneus specimen (B). N–P show selected bones of the former
Tyrannosauridae is a family of coelurosaurian theropod dinosaurs that comprises two subfamilies containing up to thirteen genera, including the eponymous Tyrannosaurus. The exact number of genera is controversial, with some experts recognizing as few as three. All of these animals lived near the end of the Cretaceous Period and their fossils have been found only in North America and Asia.
Tyrannosauridae
Deinodon teeth, the earliest known tyrannosaurid remains
Teeth that have been assigned to Aublysodon at various times
Labelled Daspletosaurus skull
