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Tuojiangosaurus
 
 
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Tuojiangosaurus (meaning 'Tuo River lizard') is a genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 of stegosaurid dinosaur
Dinosaur

Dinosaurs were the dominant vertebrate animals of Landform ecosystems for over 160 million years, from the late Triassic Period until the end of the Cretaceous Period , when most of them became extinct in the Cretaceous?Tertiary extinction event....
 from the Late Jurassic
Jurassic

The Jurassic is a geologic period that extends from about annum to  Ma, that is, from the end of the Triassic to the beginning of the Cretaceous....
 Period, recovered from the Upper Shaximiao Formation of what is now Sichuan
Sichuan

is a Province in western China proper with its capital in Chengdu. The current name of the province, ?? , is an abbreviation of ??? , or "Four circuit #Circuits in East Asia of rivers", which is itself abbreviated from ???? , or "Four circuits of rivers and gorges", named after the division of the existing circuit into four during the Song...
 Province in China
China

China is a Culture of China, an ancient civilization, and, depending on perspective, a national or multinational entity extending over a large area in East Asia....
. Physically similar to the North America
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
n Stegosaurus
Stegosaurus

Stegosaurus is a genus of Stegosauria Thyreophora dinosaur from the Late Jurassic Period in what is now western North America. In 2006, a specimen of Stegosaurus was announced from Portugal, showing that they were present in Europe as well....
, Tuojiangosaurus is the best understood of the Chinese
People's Republic of China

The People's Republic of China , commonly known as China, is the largest country in East Asia and the List of countries by population in the world with over 1.3 billion people, approximately a fifth of the world's population....
 stegosaurs.






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Fieldmuseum5 Chicago
Tuojiangosaurus (meaning 'Tuo River lizard') is a genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 of stegosaurid dinosaur
Dinosaur

Dinosaurs were the dominant vertebrate animals of Landform ecosystems for over 160 million years, from the late Triassic Period until the end of the Cretaceous Period , when most of them became extinct in the Cretaceous?Tertiary extinction event....
 from the Late Jurassic
Jurassic

The Jurassic is a geologic period that extends from about annum to  Ma, that is, from the end of the Triassic to the beginning of the Cretaceous....
 Period, recovered from the Upper Shaximiao Formation of what is now Sichuan
Sichuan

is a Province in western China proper with its capital in Chengdu. The current name of the province, ?? , is an abbreviation of ??? , or "Four circuit #Circuits in East Asia of rivers", which is itself abbreviated from ???? , or "Four circuits of rivers and gorges", named after the division of the existing circuit into four during the Song...
 Province in China
China

China is a Culture of China, an ancient civilization, and, depending on perspective, a national or multinational entity extending over a large area in East Asia....
. Physically similar to the North America
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
n Stegosaurus
Stegosaurus

Stegosaurus is a genus of Stegosauria Thyreophora dinosaur from the Late Jurassic Period in what is now western North America. In 2006, a specimen of Stegosaurus was announced from Portugal, showing that they were present in Europe as well....
, Tuojiangosaurus is the best understood of the Chinese
People's Republic of China

The People's Republic of China , commonly known as China, is the largest country in East Asia and the List of countries by population in the world with over 1.3 billion people, approximately a fifth of the world's population....
 stegosaurs. It was around 7.0 meters
Metre

The metre or meter is a Unit of measurement of length. It is the SI base unit of length in the metric system and in the International System of Units , used around the world for general and scientific purposes....
 (23 ft) long and 2 meters (7 ft) high, with a postulated weight of around 4 metric tons (4.4 short ton
Short ton

The short ton is a unit of weight equal to 2,000 Pound . In the United States it is often called simply ton without distinguishing it from the metric ton or the long ton ; rather, the other two are specifically noted....
s).

Discovery and species

Tuojiangosaurus Tail Nhm
The type
Type species

In taxonomy, a type species is the species that originally defined a genus . It is an individual specimen that fixes the name of a genus . Two different definitions are used interchangeably, in a general term and a botanical term....
 and only species, T. multispinus, was named in 1977 (exactly a hundred years after Stegosaurus) on the strength of two specimens, one over half complete. Like its compatriot Kentrosaurus
Kentrosaurus

Kentrosaurus is a genus of stegosauria dinosaur from the Late Jurassic of Tanzania, related to the better-known Stegosaurus of North America....
, it had two rows of pointed plates along the spine. It also had two outward-pointing spikes on each side of the end of the tail, angled approximately at 45 degrees to the vertical. In stegosaurs, this spike arrangement has become affectionately known as the "thagomizer
Thagomizer

The thagomizer, or tail spikes, is an arrangement of four to ten spikes on the tails of particular dinosaurs of the cladistics Stegosauria, of which Stegosaurus stenops is the most familiar....
".

Popular Culture

A mounted skeleton of Tuojiangosaurus multispinus is on display at the Municipal Museum of Chongqing. In addition, a mounted cast is on display at the Natural History Museum
Natural History Museum

The Natural History Museum is one of three large museums on Exhibition Road, South Kensington, London . Its main frontage is on Cromwell Road. The museum is a non-departmental public body sponsored by the Department for Culture, Media and Sport...
, in London
London

London is the capital of both England and the United Kingdom, and the most populous municipality in the European Union. An important settlement for two millennia, History of London goes back to its founding by the Roman Empire....
.

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