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Klamelisaurus is a genus of herbivorous sauropod dinosaur from the Middle Jurassic of China.

Klamelisaurus
Temporal range: Middle Jurassic, 174–163 Ma
Klamelisaurus mount.jpg
Skeleton cast
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Suborder: Sauropodomorpha
Clade: Sauropoda
Clade: Eusauropoda
Genus: Klamelisaurus
Zhao, 1993
Species
  • K. gobiensis Zhao, 1993

DiscoveryEdit

 
Artist impression of Klamelisaurus in a conifer forest

The type species Klamelisaurus gobiensis was named and described by Zhao Xijin in 1993. The generic name refers to Kelamaili, of which "Klameli" is a spelling variant, where remains were found north of Jiangjunmiao in the Junggar Basin of Xinjiang province, in 1982. The specific name refers to the Gobi.[1]

The holotype, IVPP V9492, was found in a layer of the Shishugou Formation dating from the Oxfordian, about 160 million years old. It consists of a partial skeleton lacking the skull. The postcranial skeleton is rather complete, missing only the front part of the neck, the left shoulder girdle, the left forelimb and the feet.[1] The quality of the bones was poor and deteriorated during preparation.

DescriptionEdit

Klamelisaurus was a medium-sized sauropod. In 2010, Gregory S. Paul estimated its length at fifteen metres, its weight at five tonnes, at the same time presuming it represented the adult form of Bellusaurus.[2] In their osteological description of Bellusaurus, Moore et al. (2018) refuted the possible synonymy of Klamelisaurus and Bellusaurus by pointing to the slightly older age of the former and non-ontogenetic differences between the two genera.[3]

Zhao in 1993 established a single explicit autapomorphy: the upper end of the ulna is expanded.[1]

In 1993 Zhao erected a new subfamily, Klamelisaurinae, of which Klamelisaurus was the only member. He assigned Klamelisaurinae to the obscure sauropod clade Bothrosauropodea.[1] It was considered of uncertain classification by Upchurch et al. (2004), possibly being a non-neosauropod eusauropod.[4]

ReferencesEdit

  1. ^ a b c d Zhao Xijing (1993). "A new Mid-Jurassic sauropod (Klamelisaurus gobiensis gen. et sp. nov.) from Xinjiang, China" (PDF). Vertebrata PalAsiatica. 31 (2): 132–138.
  2. ^ Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 178
  3. ^ Moore AJ, Mo J, Clark JM, Xu X. (2018) Cranial anatomy of Bellusaurus sui (Dinosauria: Eusauropoda) from the Middle-Late Jurassic Shishugou Formation of northwest China and a review of sauropod cranial ontogeny. PeerJ 6:e4881 https://doi.org/10.7717/peerj.4881
  4. ^ P. Upchurch, P. M. Barrett, and P. Dodson. 2004. Sauropoda. In D. B. Weishampel, H. Osmolska, and P. Dodson (eds.), The Dinosauria (2nd edition). University of California Press, Berkeley 259-322