Ruyangosaurus

Ruyangosaurus
Temporal range: Early Cretaceous, Aptian–Albian
Skeletal and life restorations
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Suborder: †Sauropodomorpha
Clade: †Sauropoda
Clade: †Titanosauriformes
Genus: Ruyangosaurus
Lu et al., 2009
Species

Ruyangosaurus (Ruyang County lizard) is a genus of titanosauriform sauropod dinosaur recovered from the Early Cretaceous Haoling Formation of China. The type species is R. giganteus, described in 2009 by a group of scientists from the Chinese Academy of Sciences and the Henan Geological Museum.[1] Along with Huanghetitan and Daxiatitan, Ruyangosaurus is among the largest dinosaurs discovered in Cretaceous Asia.

Classification

The describers of Ruyangosaurus assigned it to Andesauridae, a widely disused term for the most primitive titanosaurs. A recent cladistic study recovers the genus as a member of Lognkosauria.[2]

Habitat

Ruyangosaurus shared its habitat with Xianshanosaurus, "Huanghetitan" ruyangensis, Yunmenglong, Luoyanggia, and Zhongyuansaurus. The type horizon of Ruyangosaurus was originally described as being of "early Late Cretaceous" age,[1] but recent work has assigned it an Aptian-Albian Age based on fieldwork and analysis of invertebrate and microfossil assemblages.[3]

See also

References

  1. 1 2 Lü J, Xu L, Jia S, Zhang X, Zhang J, Yang L, You H, Ji Q. (2009). "A new gigantic sauropod dinosaur from the Cretaceous of Ruyang, Henan, China". Geological Bulletin of China 28(1), 1-10.
  2. ↑ Sassani N, Bivens GT. (2017) The Chinese colossus: an evaluation of the phylogeny of Ruyangosaurus giganteus and its implications for titanosaur evolution. PeerJ Preprints 5:e2988v1 https://doi.org/10.7287/peerj.preprints.2988v1
  3. ↑ Xu, L., Pan, Z.C., Wang, Z.H., Zhang, X.L., Jia, S.H., Lü, J.C., Jiang, B.L., 2012. Discovery and significance of the Cretaceous system in Ruyang Basin, Henan Province. Geological Review 58, 601-613.
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