Named By: Benjamin P. Kear - 2005.
Synonyms: Eromangasaurus carinognathus.
Classification: Chordata, Reptilia, Sauropterygia, Plesiosauria, Elasmosauridae.
Species: E. australis (type).
Size: Uncertain due to incomplete skull material.
Known locations: Australia, Eromanga Basin - Toolebuc Formation.
Time period: Albian of the Cretaceous.
Fossil representation: Complete but crushed skull and mandible (lower jaw).
was initially known as E. carinognathus, but this
was seen as a synonym
to the second species of Tuarangisaurus
which was also named in 2005.
The material became known as Tuarangisaurus australis
study by Bernjamin P. Kear revealed several key differences. In 2007
Eromangasaurus was resurrected as a distinct genus
but given the
species name E. australis due to it being classed
australis. The old species name E. carinognathus
now classed as a
synonym even though both species are derived from the same fossil.
Damage to the skull includes what appear to be tooth marks from a
indicating that Eromangasaurus was a prey species
for this and probably other
As an elasmosaurid plesiosaur, Eromangasaurus would have had a proportionately long neck compared to other non-elasmosaurid plesiosaurs. This would have given Eromangasaurus a significant reach for snapping up fish and squid.