Xixiposaurus
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''Xixiposaurus'' (meaning "Xixipo lizard") is a
genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of "
prosauropod Sauropodomorpha ( ; from Greek, meaning "lizard-footed forms") is an extinct clade of long-necked, herbivorous, saurischian dinosaurs that includes the Sauropoda, sauropods and their ancestral relatives. Sauropods generally grew to very large siz ...
"
dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ...
which existed in what is now
Lower Lufeng Formation The Lufeng Formation (formerly Lower Lufeng Series) is a Lower Jurassic sedimentary rock formation found in Yunnan, China. It has two units: the lower Dull Purplish Beds/Shawan Member are of Hettangian age, and Dark Red Beds/Zhangjia'ao Member ar ...
,
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
during the lower
Jurassic period The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. The Jurassic constitutes the second and m ...
. It was first named by Sekiya Toru in
2010 The year saw a multitude of natural and environmental disasters such as the 2010 Haiti earthquake, the Deepwater Horizon oil spill, and the 2010 Chile earthquake. The 2009 swine flu pandemic, swine flu pandemic which began the previous year ...
and the
type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...
is ''X. suni''.


Etymology

The generic name, ''Xixiposaurus'', refers to the village of Xixipo in
Lufeng County Lufeng (; Yi script, Chuxiong Yi script: , International Phonetic Alphabet, IPA:) is a county-level city located in Yunnan province, China, administered as a part of Chuxiong Yi Autonomous Prefecture. Geography Lufeng is located in the east of Ch ...
,
Yunnan Yunnan; is an inland Provinces of China, province in Southwestern China. The province spans approximately and has a population of 47.2 million (as of 2020). The capital of the province is Kunming. The province borders the Chinese provinces ...
, China, where the holotype, a partial skeleton with skull named ZLJ01018, was discovered. The specific name, ''suni'', refers to Professor Sun Ge of
Jilin University Jilin University (JLU) is a public university in the city of Changchun, Jilin, China. It is affiliated with the Ministry of Education. The university is part of Project 211, Project 985, and the Double First-Class Construction. History Founded ...
.


Classification

Sekiya (2010)'s phylogenetic analysis places ''Xixiposaurus'' as a derived member of a monophyletic Prosauropoda, a hypothesis that is currently unaccepted. It is placed as the sister taxon to ''
Mussaurus ''Mussaurus'' (meaning "mouse lizard") is a genus of herbivorous sauropodomorph dinosaur that lived in southern Argentina during the Sinemurian stage of the Early Jurassic. It receives its name from the small size of the skeletons of juvenile and ...
'' in a family Plateosauridae, which also included ''
Riojasaurus ''Riojasaurus'' (meaning "lizard from La Rioja") was a herbivorous sauropodomorph dinosaur named after La Rioja Province in Argentina where it was found in the Los Colorados Formation in the Ischigualasto-Villa Unión Basin by José Bonaparte. ...
'', ''
Coloradisaurus ''Coloradisaurus'' (meaning "Los Colorados lizard") is a genus of massospondylid sauropodomorph dinosaur. It lived during the Late Triassic period (Norian stage) in what is now La Rioja Province, Argentina. It is known from two specimens coll ...
'', and "''
Gyposaurus ''Gyposaurus'' (meaning "vulture lizard", referring to the outdated hypothesis that prosauropods were carnivores) is a genus of basal sauropodomorph dinosaur from the early Jurassic of South Africa. It is usually considered to represent juvenil ...
''" '' sinensis''.


References

Sauropodomorpha Dinosaur genera Sinemurian dinosaurs Pliensbachian dinosaurs Lufeng Formation Dinosaurs of China Fossil taxa described in 2010 {{Sauropodomorph-stub