Kartu dino No. 1236 ci 2 027

Nanotyrannus

Tur bi mooy: “dwarf tyrant king”1

Lekkoon: YàppTiranosoor yiKretase bu mujj

Nanotyrannus was a small, fast cousin of T. rex that lived near the end of the dinosaur age. It had a slender skull, big arms, and long legs for chasing prey. Scientists argue whether it was a separate dinosaur or just a baby T. rex.1

Dundoon

am na 72 ba 66 milyoŋ at6

Kretase bu mujj

Fosil yu ñu gis ci

Hell Creek Formation and Lance Formation in Montana, South Dakota, North Dakota, and Wyoming, USA1 6

Guddaay

5,2 m (17 ft)1

Diisaay

704 kg ba 1,2 toon (1 600 ba 2 600 lb)1

Kawewaay

1,8 m (5,9 ft)

jortu

Gaawaay bi gën a kawe

lu tollu ci 50 km/h (31 mph)

Daw: Dececchi et al. 2020 (45 to 50 km/h)

Kañ la dundoon?

Triyaas

Jurasik

Kretase

Am na 252 milyoŋ at20114566, asteroyid bi

Naka la réyoon?

Naka la guddoon?

Naka la kawewoon?

jortu

Naka la diisoon?

diis ni 60 xaj

gudd ni 5 xaj, bakkan ba geengudd ni 29 banaana yu ñu topp-toppalediis ni 240 xaaldiis ni 63 xale yu materneldiis ni 38 xale yu lekkooldiis ni 2,5 uurs yu weexmënoon na daw 100 meetar ci 7,2 segond (nit ki gën a gaaw dafay soxla 9,6)

Naka la Nanotyrannus réyoon, bu ñu ko méngalee ak YAW?

Ay kalkil rekk ci sa navigatëer. Dara du ñu denc, dara du ñu yónne fenn.

Naka la gaawoon?

Nit kuy dox lu tollu ci 5 km/h (3 mph)

Xale bu nekk ci welo lu tollu ci 12 km/h (7 mph)

Nanotyrannus lu tollu ci 50 km/h (31 mph)

Fas buy daw bu gaaw lu tollu ci 65 km/h (40 mph)

Segg bu gaaw lu tollu ci 100 km/h (62 mph)

yëf yu neex

Xibaar yu neex

Nanotyrannus was about 5.2 metres (17 feet) long, much smaller than T. rex which could be over 12 metres (40 feet).1

Its arms were longer and stronger than those of T. rex, both in absolute size and compared to its body.1

Nanotyrannus had small horns or crests right in front of its eyes, which T. rex did not have.1

It was probably a fast runner. Scientists think it could chase down prey more easily than the bulky T. rex.1

The first Nanotyrannus skull was found in 1942 and was originally thought to be a new species of Gorgosaurus.1

In 2025, scientists named a second species, Nanotyrannus lethaeus, based on a skeleton nicknamed 'Jane'.1

Nanotyrannus lived right up to the asteroid impact that killed the non-avian dinosaurs, about 66 million years ago.1

Nataalu Nanotyrannus bu ñu def ak IA — Nataal bu IA def la, muy wone ni Nanotyrannus mën a meloon, ordinatëer moo ko def ci li boroom xam-xam yi xam. Jortu kese la: rab bi ci dëgg mën na meloon neneen, te kenn xamul ay kulëëram yu dëgg.

yeen a laaj

Laaj yi ñu gën a laaj ci Nanotyrannus

?Was Nanotyrannus a real dinosaur?

Yes. In 2025, scientists proved it was a separate dinosaur, not a baby T. rex.3 4

?How big was Nanotyrannus?

About 5.2 metres (17 feet) long. It weighed roughly 704 kilograms (1,552 pounds) for one species and up to 1,200 kilograms (2,600 pounds) for another.1

?When did Nanotyrannus live?

It lived about 67 to 66 million years ago, right up to the asteroid impact that killed the non-avian dinosaurs.1

?Could Nanotyrannus run fast?

Yes. It had long legs and was probably a fast runner, able to chase down prey more easily than the bulky T. rex.1

?Did Nanotyrannus have feathers?

Scientists are not sure. No feathers have been found on Nanotyrannus fossils, but many related dinosaurs had them.1

?What did Nanotyrannus eat?

It was a meat-eater. It probably hunted smaller dinosaurs and other animals, using its sharp teeth and strong arms.1

?How many teeth did Nanotyrannus have?

It had more teeth than T. rex. The front teeth were smooth, and the rest were serrated and blade-like.1 5

?Is Nanotyrannus bigger than T. rex?

No. Nanotyrannus was much smaller, about 5.2 metres (17 feet) long, while T. rex could be over 12 metres (40 feet) long.1

Ku tas léeb yu dul dëgg

Léeb: Nanotyrannus is just a baby T. rex.

Dëgg: Many scientists now think Nanotyrannus is a separate, smaller species. Studies in 2025 showed that some Nanotyrannus specimens were fully grown adults, not youngsters.1

Ngir ñi xam dino lool

Turu xam-xam: Nanotyrannus
Ku ko tudde: Bakker et al. 19886
Kurél: Tiranosoor yi
Njaboot / klad: Nanotyrannidae6
Klasifikasiyoŋ: Theropoda > Tyrannosauroidea6
Màggaayu doj yi: 72 ba 66 milyoŋ at (Maastrichtian)6
Formasiyoŋi doj: Hell Creek, Lance6
Réew yi: Amerig6
Fosil yu ñu gis: 6 ci The Paleobiology Database6
Gisees: The first Nanotyrannus skull was found in 1942 by David Hosbrook Dunkle in the Hell Creek Formation of Montana. In 1988, Robert Bakker, Michael Williams, and Philip Currie named it Nanotyrannus, meaning 'dwarf tyrant'.1 2
Ñu ngi koy werante ba tey: Scientists still debate whether Nanotyrannus is a valid genus or just a juvenile Tyrannosaurus rex. New studies in 2025 support it being a real, separate dinosaur, but not everyone agrees.1

Fa xibaar yi jóge

Nanotyrannus (en.wikipedia.org)
Nanotyrannus, a new genus of pygmy tyrannosaur, from the latest Cretaceous of Montana (zenodo.org)
Nanotyrannus and Tyrannosaurus coexisted at the close of the Cretaceous | Nature (nature.com)
Nanotyrannus Confirmed: Dueling Dinosaurs Fossil Rewrites the Story of T. rex | Department of Biological Sciences (bio.sciences.ncsu.edu)
Agile and vicious Nanotyrannus was not just a teenage T. rex | Reuters (reuters.com)
Nanotyrannus in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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