Xingxiulong information

Xingxiulong; Temporal range: Hettangian PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Photographs of skeletal elements (a-n) and skeletal reconstruction (o) of Xingxiulong
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Sauropodiformes
Genus:	†Xingxiulong; Wang et al., 2017
Type species
	†Xingxiulong chengi; Wang et al., 2017

Xingxiulong (meaning "Xingxiu Bridge dragon") is a genus of bipedal sauropodiform from the Early Jurassic of China. It contains a single species, X. chengi, described by Wang et al. in 2017 from three specimens, two adults and an immature individual, that collectively constitute a mostly complete skeleton. Adults of the genus measured 4–5 metres (13–16 ft) long and 1–1.5 metres (3 ft 3 in – 4 ft 11 in) tall. Phylogenetic analysis suggests that Xingxiulong is most closely related to its contemporary Jingshanosaurus, although an alternative position outside of both the Sauropodiformes and Massospondylidae is also plausible.

Despite their close relationship, Xingxiulong prominently differs from Jingshanosaurus - and from most basal sauropodomorphs - in having a number of sauropod-like traits. These include a sacrum containing four vertebrae; a pubis with an exceptionally long top portion; and the femur, the first and fifth metatarsals on the foot, and the scapula being wide and robust. These probably represent adaptations to supporting high body weight, in particular a large gut. Unlike sauropods, however, Xingxiulong would still have been bipedal.

Xingxiulong information

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Xingxiulong

Musankwa

List of sauropodomorph type specimens

Brachiosaurus

Massospondylidae

Lusotitan

Apatosaurus

Titanosaurus

Patagotitan

Supersaurus

Massopoda

Plateosaurus

Gigantosaurus

Dreadnoughtus

Eoraptor

Nigersaurus

Mamenchisaurus

Saltasaurus

Giraffatitan

Alamosaurus

Titanosauria

Sauroposeidon

Inawentu

Tharosaurus

Jingiella

Quaesitosaurus

Galvesaurus

Chucarosaurus

Somphospondyli