Evergreen Formation

The Evergreen Formation is a Pliensbachian to Toarcian geologic formation of the Surat Basin in New South Wales and Queensland, eastern Australia. It is Upper Pliensbachian to Toarcian in age.
Fossil content.
The temnospondyl "Siderops", "Decorotergum warrenae" and indeterminate plesiosaur fossils are known from the formation, deposited in a lacustrine environment.