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Tanycolagreus is a coelurosaurian theropod from the Late Jurassic period of North America.

Carpenter et al. (2005, pp. 43–44) determined that the holotype of Tanycolagreus represents a subadult individual which measured approximately 3.3 meters (11 feet) long in life. However, one of the referred fossils, the premaxilla from the Cleveland-Lloyd Quarry, would have belonged to a larger individual, measuring 4 meters (13 feet) long. In 2010 Gregory S. Paul estimated the weight of a four metres long animal at hundred twenty kilogrammes. It cannot be determined whether or not the Cleveland-Lloyd specimen represents a fully mature adult, so the upper size limit for the taxon remains unknown.

The head of Tanycolagreus is large, elongated and rectangular in profile due to a blunt snout. The leg is rather long and lightly built.

Carpenter et al. (2005; pp. 27 & 29) diagnosed Tanycolagreus topwilsoni as follows: "Medium-sized tetanuran having short, deep-bodied premaxilla pierced by narial foramen at base of nasal process, orbital process on postorbital, T-shaped quadratojugal, centrodiapophyseal lamina on dorsals. Differs from Coelurus in the absence of pleurocoel on anterior dorsals; posterior caudal prezygapophyses elongated to one-third centrum length, rather than short; straight, rather than sigmoidal, humeral shaft; bowed, rather than straight, radius; flat-bottomed rather than arced pubic foot; straight rather than sigmoidal femoral shaft; metatarsal length subequal to humeral length, rather than 1.75 times humeral length. Differs from Ornitholestes in straight anterior margin of premaxilla, rather than rounded; T-shaped rather than L-shaped quadratojugal; elongate neural spine; posterior caudal prezygapophyses only one-third centrum length, rather than one-half centrum length; bowed, slender radius, rather than straight, robust radius".

The single premaxillary tooth preserved with the holotype is badly damaged, but does exhibit the asymmetrical cross-section typical in theropod teeth; the cheek teeth are too poorly preserved to show any detail. In the foot the second toe is slightly hyperextendable but does not carry an enlarged claw.

Wikipedia
Wikipedia has a more detailed and comprehensive article on Tanycolagreus



Games

Jurassic World: The Game

see Tanycolagreus/JW: TG

Tanycolagreus became an available VIP creature in the game on June 29, 2016. An interesting feature to the Tanycolagreus in the game is that it has fur-like feather, which it had in reality.

Jurassic World: Alive

Tanycolagreus will appear in Jurassic World: Alive. An interesting feature to the Tanycolagreus in the game is that it has fur-like feather, which it had in reality.

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