Extinct genus of dinosaur from early Jurassic South Africa
Arcusaurus
Temporal range: Early Jurassic, Pliensbachian
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Dinosauria
Clade:
Saurischia
Clade:
†Sauropodomorpha
Clade:
†Bagualosauria
Genus:
†Arcusaurus Yates et al., 2011
Species
†A. pereirabdalorum Yates et al., 2011 (type)
Arcusaurus is an extinct genus of sauropodomorph dinosaur from the Early Jurassic (Hettangian to Sinemurian stages) of South Africa.
Arcusaurus was first named by Adam Yates, Matthew Bonnan and Johann Neveling in 2011 and the type species is Arcusaurus pereirabdalorum. The generic name is derived from Latin arcus, "rainbow", a reference to the Rainbow Nation. The specific epithet honours Lucille Pereira and Fernando Abdala who discovered the fossils.
A phylogenetic study of Arcusaurus found it to be a basal sauropodomorph, placing it as the sister taxon of Efraasia and all of the more derived sauropodomorphs. Since Efraasia is known from the Norian stage of the Late Triassic, the close relationship with Arcusaurus implies that there was a 35-million-year ghost lineage of sauropodomorphs stretching from Late Triassic forms to Arcusaurus. However, Arcusaurus possesses many features unique to more advanced groups included in the clade Plateosauria, raising doubts about the results of the phylogenetic analysis.[1]
^Yates, Adam M.; Matthew F. Bonnan; Johann Neveling (2011). "A new basal sauropodomorph dinosaur from the Early Jurassic of South Africa". Journal of Vertebrate Paleontology. 31 (3): 610–625. doi:10.1080/02724634.2011.560626.
Arcusaurus is an extinct genus of sauropodomorph dinosaur from the Early Jurassic (Hettangian to Sinemurian stages) of South Africa. Arcusaurus was first...
Museum Bathonian Isalo III Formation, Madagascar Partial jaw with teeth Arcusaurus pereriabdalorum BP/1/6235 Evolutionary Studies Institute Pliensbachian...
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