Yutyrannus

Yutyrannus
General information
Universe	Real life
Classification	Yutyrannus huali
Homeworld	Earth
Intelligence	Non - sapient
Biochemistry	Carbon based
Discovered	2012
Discoverer	Xu Xing
Biological information
Reproduction	Sexual; lays eggs
Average height	3 meters (10 ft)
Average weight	1400 kg (3100 lbs)
Average length	9 meters (30 ft)
Locomotion	Bipedal
Feeding behavior	Carnivorous
Prey	Smaller sauropods, hadrosaurs, various smaller herbivorous dinosaurs
Distinctive features	Full body feather covering, crests above eys
Lineage information
Cultural information
Sociocultral characteristics
Scientific taxonomy
Domain	Eukaryota
Kingdom	Animalia
Phylum	Chordata
Class	Sauropsida
Order	Saurischia
Suborder	Theropoda
Superfamily	†Tyrannosauroidea
Family	†Proceratosauridae
Genus	†Yutyrannus
Species	†Y. hauli
Other information
Status	Extinct

Yutyrannus was genus a Proceratosaurid Tyrannosaurid theropod dinosaur from early Cretaceous China. Yutyrannus is the largest known dinosaur that has direct evidence of feathers, showing that even larger Theropod dinosaurs could have had feathered plumage. The genus contains a single known species, Y. Huali.

Physiology

Yutyrannus was a medium sized bipedal, predatory theropod, with 2 long legs, and relatively large arms with 3 fingers, each tipped with a claw. It's head was adorned with 2 crests aboe it's eyes, while it's snout had a large midline crest, although it was still smaller than that of some it's relatives, such as the earlier Proceratosaurus or Guanlong. It's the largest animal which has direct evidence of feathers, which were long, up to 20 centimeters (7.9 in), and filamentous. The feathers may have covered the entire body and served in regulating temperature, considering the rather cold climate of early Cretaceous northeastern China.

The animal was one of the largest members of it's group up until that point, although it was most likely smaller than the Sinotyrannus. Still, it was far more robustly build than most of it's relatives, being closer in proportion to other similairly sized theropods such as Allosaurus. Due to it's numerous fossils, it's ontogeny is somewhat understood, with younger individuals having longer arms and legs, but smaller skulls, not to disimilairly what is known about Tyrannosaurus.

Behaviour

An image showcasing the hypothetical pack behaviour of Yutyrannus. Here, they are depicted attacking a Dongbeititan, a large Sauropod from the same region.

Yutyrannus would have been one of the 2 large carnivores in the Yixian formation, alongside a yet undescribed species of theropod. It's possible Yutyrannus would have hunted in small packs or atleast form occasional mobs to take down larger animals such as the Dongbeititan, as there's a fossil of 3 Yutyrannus preserved together in a quarry where Sauropod remains have been found. There were some other Sauropod hunting dinosaurs which likely also possesed pack behaviour, such as the Giganotosaurus relative, Mapusaurus. That for now however remains only speculation. Not much else can be deduced from it's fossils.

Triva

TBD

Gallery

Life sized reconstruction of an Yutyrannus at the American Museum of National History.

A drawing depicting a pack of Yutyrannus alongside other fauna during a colder season.

A Yutyrannus from Jurassic World: Evolution 2. The animal is largely accurate to reality, aside from it's size, suggesting it may have been cloned by Biosyn as opposed to Ingen.

2 Skeletal mounts of Yutyrannus fighting from Dino Kingdom 2012. The poses appear to be based of an older painting of Dryptosaurus, a relative of the Tyrannosaurus, similair in size to Yutyrannus.