The Dashanpu Formation is a Mid

Middle Jurassic

The Middle Jurassic is the second epoch of the Jurassic Period. It lasted from 176-161 million years ago. In European lithostratigraphy, rocks of this Middle Jurassic age are called the Dogger....

 to Late Jurassic

Late Jurassic

The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 161.2 ± 4.0 to 145.5 ± 4.0 million years ago , which is preserved in Upper Jurassic strata. In European lithostratigraphy, the name "Malm" indicates rocks of Late Jurassic age...

 rock formation in China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, most notable for the wealth of dinosaur

Dinosaur

Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...

s that have been excavated from the area. The Dashanpu Formation sits in and around the small township of Dashanpu , situated seven kilometres north-east from Sichuan

Sichuan

' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...

's third largest city, Zigong

Zigong

Zigong , ancient name Ziliujing and Gongjing, is a prefecture-level city and the third largest city in Sichuan Province, in southwest China.-Geography:...

, in the Da'an district .

Geology

The Dashanpu Formation includes four layers of rock: The upper and lower Shaximiao Formations , although they are commonly referred to as one, simply being called “Shaximiao Formations”. The upper Shaximiao Formation is also known as the Shangshaximiao Formation, and the lower Shaximiao Formation is also known as the Xiashaximiao Formation. The Shaximiao Formations are the most productive, despite being only two of four. The last two formations, the Zhenchuchong Formation and the Ziliujing Formation, are noticeably less productive and remain relatively unexplored.

Dinosaur finds

The Dashanpu Formation has produced mainly sauropods

Sauropoda

Sauropoda , or the sauropods , are an infraorder of saurischian dinosaurs. They had long necks, long tails, small heads , and thick, pillar-like legs. They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land...

, but has also held numerous other dinosaur types, such as theropods and stegosauria

Stegosauria

Known colloquially as stegosaurs, the Stegosauria are a group of herbivorous dinosaurs of the Jurassic and Early Cretaceous Periods, being found mostly in the Northern Hemisphere, predominantly in what is now North America and China....

ns amongst others. In total, over 8,000 pieces of bone have been unearthed from the area – amounting to nearly 40 tonne

Tonne

The tonne, known as the metric ton in the US , often put pleonastically as "metric tonne" to avoid confusion with ton, is a metric system unit of mass equal to 1000 kilograms. The tonne is not an International System of Units unit, but is accepted for use with the SI...

s. The site was unknown until the early 1970s, when a Chinese gas company unearthed Gasosaurus

Gasosaurus

Gasosaurus was a tetanuran dinosaur discovered in Dashanpu, China. The scientific name, meaning "Gas Lizard", honours the gasoline company that found the Dashanpu fossil quarry in Sichuan Province, now named as the Lower Shaximiao Formation. It had strong legs but short arms, and like most...

in 1972. It would be the first of the many dinosaurs to be uncovered from the area. Most specimens found are held at the Zigong Dinosaur Museum which has been placed on the area during the mid-1980s.

Despite being a frequented “dinosaur-quarry” at present, the Dashanpu Formation was once a lush forest, evidence of which has been found alongside dinosaur remains in the form of fossilised wood. Paleontologists speculate that the area also had a lake that was fed by a large river. Dinosaur remains would have been swept toward the lake over millions of years, thus accounting for the hundreds of specimens found. Paleontologists have dated parts of the formation at about 168 to 161 million years old, between the Bathonian

Bathonian

In the geologic timescale the Bathonian is an age or stage of the Middle Jurassic. It lasted from approximately 167.7 Ma to around 164.7 Ma...

 to Callovian

Callovian

In the geologic timescale, the Callovian is an age or stage in the Middle Jurassic, lasting between 164.7 ± 4.0 Ma and 161.2 ± 4.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the Oxfordian....

 stages of the Mid Jurassic.

Zhiming's research

The paleontologist who has made the largest contribution to the formation and its excavation is Dong Zhiming

Dong Zhiming

Dong Zhiming , from the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing, is one of China's leading paleontologists. He began working at the IVPP in 1962, learning from Yang Zhongjian who was director at the time...

. He first examined the formation in 1975, after bone fragments were found embedded in rock from the area. The site was being demolished to make way for both a natural gas

Natural gas

Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons . It is found associated with other hydrocarbon fuel, in coal beds, as methane clathrates, and is an important fuel source and a major feedstock for fertilizers.Most natural...

 field facility and a vehicle park when Zhiming first saw the area. Amongst the extensive clearings, Zhiming found numerous bone fragments which were exposed.

However, the specimens were being damaged due to bulldozers in the area and there would be little chance of closing the area as the state had invested millions of yuan in the site already. It was not until 1985 that the government finally agreed to close the construction on the site, and by then Zhiming and his team had already excavated over 100 dinosaurs from the area, including several rare sauropod skulls. A dinosaur was found in the Dashanpu Formation which was named in tribute of both Dashanpu and Dong Zhiming; Dashanpusaurus dongi

Dashanpusaurus

Dashanpusaurus is an extinct genus of sauropod dinosaur that lived during the middle of the Jurassic period. The dinosaur was described in 2005 by a group of Chinese paleontologists. The dinosaur's binomial name, Dashanpusaurus dongi, was named after a prolific dinosaur expert of the Dashanpu...

.

Paleobiota of the Dashanpu Formation

In addition to dinosaur finds, many other prehistoric finds have been uncovered from the Dashanpu Formation. Amongst these finds are fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

es, amphibian

Amphibian

Amphibians , are a class of vertebrate animals including animals such as toads, frogs, caecilians, and salamanders. They are characterized as non-amniote ectothermic tetrapods...

s, turtle

Turtle

Turtles are reptiles of the order Testudines , characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield...

s, marine reptiles such as crocodile

Crocodile

A crocodile is any species belonging to the family Crocodylidae . The term can also be used more loosely to include all extant members of the order Crocodilia: i.e...

s and also pterosaur

Pterosaur

Pterosaurs were flying reptiles of the clade or order Pterosauria. They existed from the late Triassic to the end of the Cretaceous Period . Pterosaurs are the earliest vertebrates known to have evolved powered flight...

s. Bienotheroides, a Tritylodont Synapsid

Synapsid

Synapsids are a group of animals that includes mammals and everything more closely related to mammals than to other living amniotes. They are easily separated from other amniotes by having an opening low in the skull roof behind each eye, leaving a bony arch beneath each, accounting for their name...

 has been found there, as well as Sinobrachyops, a Labyrinthodont.

Labyrinthodonts

Genus	Species	Location	Member	Material	Description
Sinobrachyops

Synapsids

Genus	Species	Location	Member	Material	Description
Bienotheroides

Pterosaurs

Genus	Species	Location	Member	Material	Description
Angustinaripterus Angustinaripterus Angustinaripterus was a basal pterosaur, belonging to the Breviquartossa, and discovered at Dashanpu near Zigong in the Szechuan province of China.Angustinaripterus was named in 1983 by He Xinlu....	A. longicephalus	Lower Shaximiao Formation.

Ornithischians

Indeterminate Stegosaurid remains have been found in the Upper Shaximiao Formation of Sichuan

Sichuan

' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...

.

Genus	Species	Location	Member	Material	Description	Images
Agilisaurus Agilisaurus Agilisaurus is a genus of ornithischian dinosaur from the Middle Jurassic Period of what is now eastern Asia. The name is derived from the Latin agilis meaning 'agile' and the Greek sauros meaning 'lizard', and refers to the agility suggested by its lightweight skeleton and long legs...	A. louderbacki	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Nearly complete skeleton with skull."
	A. multidens			"Nearly complete skeleton with skull."
Chialingosaurus Chialingosaurus Chialingosaurus is a genus of stegosaur similar to Kentrosaurus from the Upper Shaximiao Formation, Late Jurassic beds in Sichuan Province in China. Its age makes it one of the oldest species of stegosaurs, living about 160 million years ago...	C. kuani	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation.	"Partial postcranial skeleton, subadult."
Chungkingosaurus Chungkingosaurus Chungkingosaurus, meaning "Chongqing Lizard", is a genus of dinosaur from the Late Jurassic-age Upper Shaximiao Formation in what is now China. It is classified as a stegosaurid.-Discovery and species:...	C. jiangbeiensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Incomplete skeleton with skull, [three] fragmentary postcrania, adult."
Dianchungosaurus Dianchungosaurus Dianchungosaurus is an extinct genus of mesoeucrocodylian crocodylomorph from the Early Jurassic of China. It was previously considered a dinosaur, but it was recently reclassified as a mesoeucrocodylian by Paul Barrett and Xing Xu . It is probably the same animal as the informally named...	D. lufengensis			"Fragmentary skull."
Gongbusaurus Gongbusaurus Gongbusaurus is a genus of ornithischian, perhaps ornithopod, dinosaur that lived between about 160 and 155 million years ago, in the Late Jurassic period. A small herbivore, it is very poorly known. Two species have been assigned to it, but as the original name is based on teeth, there is no...	G. shiyii	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Teeth."	Later determined to be indeterminate ornithischian remains.
Gigantspinosaurus Gigantspinosaurus Gigantspinosaurus is a genus of herbivorous ornithischian dinosaur from the Late Jurassic. It was a stegosaur found in Sichuan, China....	G. sichuanensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation.	Partial postcranial skeleton, subadult.
Hexinlusaurus Hexinlusaurus Hexinlusaurus is a genus of basal ornithischian dinosaur from the Middle Jurassic of China. The holotype , consists of an almost complete, articulated skull and some postcranial material, collected from a terrestrial sandstone within the Lower Shaximiao Formation at the famous dinosaur-bearing...
Huayangosaurus Huayangosaurus Huayangosaurus is a genus of stegosaurian dinosaur from the Middle Jurassic of China. The name derives from "Huayang", an alternate name for Sichuan , and "saurus", meaning "lizard"...	H. taibaii	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Complete skeleton with complete skull, [five] fragmentary postcrania, adult."
Sanpasaurus Sanpasaurus Sanpasaurus is the name given to the mixed-up fossils of sauropod and iguanodontian dinosaurs from the Jurassic of Sichuan, China. The type species, S. yaoi, was described by Chung Chien Young, in 1944, who recognized that the remains arrived to the lab in a jumbled state, so that their...	S. yaoi	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Ziliujing Formation		Later determined to be indeterminate ornithopod remains.
Tuojiangosaurus Tuojiangosaurus Tuojiangosaurus is a genus of stegosaurid dinosaur from the Late Jurassic Period, recovered from the Upper Shaximiao Formation of what is now Sichuan Province in China. Physically similar to the North American Stegosaurus, Tuojiangosaurus is the best understood of the Chinese stegosaurids...	T. multispinus	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"[Two] partial skeletons."
Xiaosaurus Xiaosaurus Xiaosaurus , is a genus of small herbivorous dinosaur from the middle Jurassic, approximately 169 to 163 mya. Xiaosaurus lived in what is now the Sichuan Basin of China....	X. dashanpensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Teeth and isolated postcranial material."
Yandusaurus Yandusaurus Yandusaurus is a genus of herbivorous basal euornithopod dinosaur from the Bathonian age of China.-Discovery and naming:...	Y. hongheensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Nearly complete skeleton with skull."

Sauropodomorphs

Indeterminate prosauropod remains formerly attributed to the anchisauridae have been recovered from Zhenzhunchong outcrops in Sichuan.

Genus	Species	Location	Member	Material	Description	Images
Abrosaurus Abrosaurus Abrosaurus is a genus of macronarian sauropod dinosaur from the Middle Jurassic Period of what is now Asia, one of many dinosaurs found at the Dashanpu Quarry in the Sichuan Province of China. Like most sauropods, Abrosaurus was a quadrupedal herbivore but it was rather small for a sauropod, not...	A. dongpoi	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Skull."
Dashanpusaurus Dashanpusaurus Dashanpusaurus is an extinct genus of sauropod dinosaur that lived during the middle of the Jurassic period. The dinosaur was described in 2005 by a group of Chinese paleontologists. The dinosaur's binomial name, Dashanpusaurus dongi, was named after a prolific dinosaur expert of the Dashanpu...
Datousaurus Datousaurus Datousaurus, meaning either "Chieftain lizard" or "Big-head Lizard" was a dinosaur from the Middle Jurassic. It was a sauropod collected from the Lower Shaximiao Formation in Dashanpu, Zigong Sichuan province, China...	D. bashanensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...		"[Two] partial skeletons without skulls, [and possible] jaws."	Lower Shaximiao Formation
Gongxianosaurus Gongxianosaurus Gongxianosaurus is a genus of dinosaur from the Early Jurassic Period. It was a sauropod or prosauropod from China.The type species, G. shibeiensis, was described by He, Wang, Lui, Zhou, Lui, Cai and Dai in 1998.-References:...	G. shibeiensis.	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Ziliujing Formation	"Postcranial skeleton."
cf. Lufengosaurus Lufengosaurus Lufengosaurus is a genus of prosauropod dinosaur which lived during the Early Jurassic period in what is now southwestern China.-Discovery and species:...	cf. L. huenei	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Zhenzhunchong Formation
	cf. L magnus	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Zhenzhunchong Formation		Actually referrable to cf. L. huenei.
Mamenchisaurus Mamenchisaurus Mamenchisaurus was a plant-eating four-legged dinosaur, known for its remarkably long neck which made up half its total length. It is known from numerous species which ranged in time from 160 to 145 million years ago, from the Oxfordian to Tithonian ages of the late Jurassic Period of...	M. constructus	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation
	M. fuxiensis			"Maxilla, teeth, dentary, basioccipital, dorsal vertebrae, pubis, [and] ischium."
	M. hochuanensis.	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"[Four] partial skeletons without skulls."
	M. jingyanensis.	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation
	M. youngi.	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Skull and skeleton."
Omeisaurus Omeisaurus Omeisaurus is a genus of sauropod dinosaur from the Middle Jurassic Period of what is now China. Its name comes from Mount Emei, where it was discovered in the lower Shaximiao Formation of Sichuan Province.Like other sauropods, Omeisaurus was herbivorous and large...	O. changshouensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Partial skeleton."	Later determined to be indeterminate sauropod remains.
	O. fuxiensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation		Later determined to be indeterminate sauropod remains.
	O. jiaoi	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	Nearly complete skeleton
	O. junghsiensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Several partial skeletons."
	O. luoquanensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Partial skeleton."	Later determined to be indeterminate sauropod remains.
	O. tianfuensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Skeleton with partial skull."	Mamenchisaurus Mamenchisaurus Mamenchisaurus was a plant-eating four-legged dinosaur, known for its remarkably long neck which made up half its total length. It is known from numerous species which ranged in time from 160 to 145 million years ago, from the Oxfordian to Tithonian ages of the late Jurassic Period of...  fuxiensis may be O. tianfuensis?
Protognathosaurus Protognathosaurus Protognathosaurus is a genus of dinosaur from the Middle Jurassic. It was a sauropod found in what is present-day China. The type species, P. oxyodon, was originally described by Zhang , and was renamed by George Olshevsky in 1991...	P. oxyodon	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Dentary."	Later determined to be indeterminate sauropod remains.
Sanpasaurus Sanpasaurus Sanpasaurus is the name given to the mixed-up fossils of sauropod and iguanodontian dinosaurs from the Jurassic of Sichuan, China. The type species, S. yaoi, was described by Chung Chien Young, in 1944, who recognized that the remains arrived to the lab in a jumbled state, so that their...	S. yaoi	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Ziliujing Formation	"Isolated postcranial elements."	Later determined to be indeterminate sauropod remains.
Shunosaurus Shunosaurus Shunosaurus, meaning "Shu Lizard", is a genus of sauropod dinosaur from Middle Jurassic beds in Sichuan Province in China, 170 million years ago...	S. lii	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"As many as [twenty] skeletons with [five] skulls."
Zizhongosaurus Zizhongosaurus Zizhongosaurus is a genus of basal herbivorous sauropod dinosaur which lived in the Early Jurassic Period of China. It was a large-bodied herbivore characterized by a long neck....	Z. chuanchengensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Ziliujing Formation		Later determined to be indeterminate sauropod remains.

Theropods

Indeterminate Theropod remains have been recovered from the Ziliujing Formation in Sichuan

Sichuan

' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...

.

Genus	Species	Location	Member	Material	Description	Images
Chuandongocoelurus Chuandongocoelurus Chuandongocoelurus named after the Chuandong in Sichuan Province, China, was a genus of tetanuran theropod dinosaur first described by Chinese paleontologist He in 1984...	C. primitivus	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Vertebrae, [a possible] scapula, pelvis, femur, tibia, fibula, [and] partial pes."
Gasosaurus Gasosaurus Gasosaurus was a tetanuran dinosaur discovered in Dashanpu, China. The scientific name, meaning "Gas Lizard", honours the gasoline company that found the Dashanpu fossil quarry in Sichuan Province, now named as the Lower Shaximiao Formation. It had strong legs but short arms, and like most...	G. constructus	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	"Postcranial skeleton."
Kaijiangosaurus Kaijiangosaurus Kaijiangosaurus is the name given to a genus of dinosaur from the Middle Jurassic. It was a theropod like Megalosaurus. Its fossils, fragmentary remains of the skull, cervical vertebrae and elements of the pectoral girdle and both limbs, were found in China...	K. lini	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	Vertebrae.
Leshansaurus Leshansaurus Leshansaurus is a genus of theropod dinosaur from the Mid to Late Jurassic Dashanpu Formation of what is now China. It was described in 2009 by a team of Chinese paleontologists. The type species is L. qianweiensis. Fossils of Leshansaurus were discovered in strata from the Shangshaximiao...	L. qianweiensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	One fairly complete skeleton and an isolated femur.
Sinraptor Sinraptor Sinraptor is a genus of theropod dinosaur from the Late Jurassic. The name Sinraptor comes from the Latin prefix "Sino", meaning Chinese, and "Raptor" meaning thief. The specific name dongi honours Dong Zhiming...	S. hepingensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation
Szechuanosaurus Szechuanosaurus Szechuanosaurus is a dubious genus of theropod dinosaur from the Late Jurassic. This dinosaur lived in the Asia in the Oxfordian and early Kimmeridgian . It is based on four undiagnostic teeth from the Shangshaximiao Formation.-Discovery and species:Three species have been assigned to this genus...	S. campi	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Isolated teeth."	Later determined to be an indeterminate theropod.
	S. yandonensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Isolated teeth."	Later determined to be an indeterminate theropod.
	"S." zigongensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	Fragmentary postcranial remains and two partial skeletons.
Xuanhanosaurus Xuanhanosaurus Xuanhanosaurus is a genus of theropod dinosaur which lived during the Jurassic of China.The type species Xuanhanosaurus qilixiaensis was named by Dong Zhiming in 1984. The generic name refers to Xuanhan County in Sichuan. The specific name is derived from the town of Qilixia...	X. qilixaensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Lower Shaximiao Formation	Vertebrae and a forelimb.
Yangchuanosaurus Yangchuanosaurus Yangchuanosaurus was a theropod dinosaur that lived in China during the late Oxfordian stage of the Late Jurassic, and was similar in size and appearance to its North American contemporary, Allosaurus...	Y. magnus	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Skull, vertebrae, pelvis, [and a] femur."
	Y. shangyouensis	Sichuan Sichuan ' , known formerly in the West by its postal map spellings of Szechwan or Szechuan is a province in Southwest China with its capital in Chengdu...	Upper Shaximiao Formation	"Skeleton lacking forelimbs, pes, and distal caudal series."

External links

• Dong Zhiming account of Dashanpu Formation
• "Xiashaximiao Formation" at DinoData