In 2006, a detailed lithostratigraphic and paleoecological study of a section of the Plottier Formation was published.

This section contained alluvial deposits laid down by what was essentially a low-gradient wandering river throughout the millions of years, but often was of a single-channel type with little meandering.

[3][1] Few animal fossils are known from this formation, including:[4] A footprint track of an ornithopod is known from the Middle Loma de la Lata site.

[10] 12 footprint tracks of a sauropod are known from the site of Proyecto Dino.

[10] There are also ichnofossils left on the river's mudflats, as well as fossil freshwater bivalves.