Wulagasaurus

Source: Wikipedia, the free encyclopedia.
Not to be confused with Woolungasaurus.

Wulagasaurus
Temporal range:
Ma
↓
Right dentary
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: †Ornithischia
Clade: †Ornithopoda
Family: †Hadrosauridae
Subfamily: †Saurolophinae
Genus: †Wulagasaurus
Godefroit et al., 2008
Species:
†W. dongi
Binomial name
†Wulagasaurus dongi
Godefroit et al., 2008

Wulagasaurus (meaning "Wulaga lizard", in reference to the discovery locality) is a

China
.

Discovery

Humerus and ischium

Its remains were found in a

Amur River region named since 2000. The type and only species to date is W. dongi, named in honor of Chinese paleontologist Dong Zhiming.[4]

Wulagasaurus is

cheekbone, two maxillae (the toothbearing bone of the upper jaw), another dentary, two shoulder blades, two sternal elements, two upper arm bones, and an ischium. It can be distinguished from other hadrosaurids by its slender dentary and the unique form of its upper arm, which had distinctive articulations and placements for muscle attachments. Godefroit and colleagues performed a phylogenetic analysis that suggests Wulagasaurus was the most basal saurolophine known (which would result in a long ghost lineage[5]), and interpreted this as evidence that saurolophines and hadrosaurids in general originated in Asia, which has been supported by other finds since.[4]

Description

Life restoration

In 2010 Gregory S. Paul estimated its size at 9 meters (30 ft) and 3 tonnes (3.3 short tons).[6] As a hadrosaurid, Wulagasaurus would have been an herbivore.[7]

Classification

In a 2012 conducted by researchers from the

Chinese Academy of Science, American Museum of Natural History, and Geological Museum of Heilongjiang Provinces, re-evaluated and re-described Wulagasaurus dongi.[3] Based on both original and assigned specimens, they concluded that Wulagasaurus shared many morphological similarities with North American taxon's Brachylophosaurus and Maiasaura, possibly forming a clade-structure within the already existing clade Brachylophosaurini.[3] This hypothesis has been demonstrated by another phylogenetic 2014 analysis.[8]

See also

References

  1. ISBN 978-0-7566-9910-9
    .
  2. ^ Godefroit, P., Lauters, P., Van Itterbeeck, J., Bolotsky, Y. and Bolotsky, I.Y. (2011). "Recent advances on study of hadrosaurid dinosaurs in Heilongjiang (Amur) River area between China and Russia." Global Geology, 2011(3).
  3. ^ a b c Xing, Hai; Prieto-Marquez, Albert; Gu Wei; Yu Tingxiang (2012). "Reevaluation and phylogenetic analysis of the hadrosaurine dinosaur Wulagasaurus dongi from the Maastrichtian of northeast China" (PDF). Vertebrata PalAsiatica. 50 (2): 160–169.
  4. ^
    doi:10.4202/app.2008.0103
    .
  5. S2CID 86314252. Retrieved 2017-06-06. {{cite journal}}: Cite journal requires |journal= (help
    )
  6. ^ Paul, Gregory S. (2010). The Princeton Field Guide to Dinosaurs. New Jersey: Princeton University Press. pp. 296–297.
  7. ISBN 0-520-24209-2
    .
  8. PMID 24901454
    .
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