Dinosaur remains are among the fossils that have been recovered from the formation.

[1] It is located in Romania, near Sânpetru village, part of Sântămăria-Orlea commune.

It forms a component of the Hațeg Island fauna.

The Sânpetru Formation crops out in the central to southern Hațeg Basin along the Bărbat River and comprises sandstones and mudstones deposited in a wet floodplain environment characterized by braided fluvial channels.

The formation is correlated with the Densuș-Ciula Formation of the northern section of the same basin, both dating to the Maastrichtian of the Late Cretaceous.