Named By: Adam Yates, Matthew Bonnan & Johann Neveling - 2011.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropodomorpha.
Species: A. pereirabdalorum (type).
Known locations: South Africa - Elliot Formation.
Time period: Hettangian to Sinemurian of the Jurassic.
Fossil representation: Partial skull and post cranial remains from two juvenile individuals.
is hard to currently establish a size estimate for Arcusaurus
because at the time of writing the genus is only represented by the
partial remains of two juveniles. Not only does this make it
impossible to run a tape measure along a known complete specimen, but
as juvenile they would have grown larger still, to what extent we
can’t currently say.
There is also some confusion about how Arcusaurus is related to other sauropodomorphs. A phylogenetic analysis done at the time of the original description found Arcusaurus to be closely related to the genus Efraasia, yet Arcusaurus also possesses certain features that are more common to the later and more advanced sauropodomorphs. It may be that Arcusaurus represents a transitional form of sauropodomorph that links the sauropodomorphs of the late Triassic and early/mid Jurassic.
- A new basal sauropodomorph dinosaur from the Early Jurassic of South Africa - Adam Yates, Matthew Bonnan & Johann Neveling - 2011.