Nanotyrannus ‭(‬Dwarf Tyrant‭)

Short Info

Nanotyrannus ‭(‬Dwarf Tyrant‭)

Phonetic : nan-o-tie-ran-us.

Named By : Charles Gilmore‭ ‬-‭ ‬1942

Diet : Carnivore

Size : Estimated 6 meters long

Type of Dinosaur : Large Theropod

Type Species : Gorgosaurus lancensis

Found in : USA

When it Lived : Late Cretaceous, 68-66 million years ago

Nanotyrannus is a ‘pygmy’ or ‘dwarf tyrant’ that refers to the subfamily Tyrannosaurinae’s small size. Lancensis is Montana’s ‘Lance Formation’, where the skull was discovered in 1942 by American paleontologist David H Dunkle.

Nanotyrannus lancesis is a small tyrannosaur. It was first discovered in 1942. The species was originally thought to belong to a Gorgosaurus. However, it was reclassified as a tyrannosaur in 1988. The question of whether the species name is correct or if it is a juvenile T. Rex is still being debated.

Nanotyrannus is characterized by a wide, boxy skull with a narrow back, thin snout and blade-like teeth. It also has an extended antorbital penestra (longer eye socket), and a straight orbital margin (cheek bone) of the jugal. A small pit in the quadratojugalbone (a small jaw bone located near the cheeks) is another unique feature.

Scientists initially thought that the skull was a small, but complete, Gorgosaurus. However, Nanotyrannus was created in 1988 and the species was given its new name. A closer examination revealed that the skull bones had not fused yet, suggesting the specimen could be a juvenile. It is difficult to base a species on a young specimen as animals change rapidly as they age. Although it is considered a young T. Rex, others believe it to be a different species because it has more teeth than T.

This debate could be settled by the discovery of remarkable fossils from a Nanotyrannus, ceratopsian and other combatants in Montana. This is the strongest evidence to date that this predator could have been a new species and not a juvenile T. Rex. After a lengthy legal battle, the specimen was finally accepted by the North Carolina Museum of Natural Sciences in 2020. After nearly a decade of hiding the specimen, scientists will now be able to examine it.

Nanotyrannus was either a juvenile T. Rex or a valid species. It lived in the same region of western North America as T. rex. The Rocky Mountains rose in the west, and a large part of the area was covered by an inland sea. The climate was warm and humid all year. The land was dominated by conifer, oak, magnolia, conifer, and birch forests. There were also coastal swamps with ferns and cypress-like trees. Many animals were present, including birds, insects and snakes. There was also small mammals like crocodiles and crocodiles.