Portezuelo Formation

The type locality of the Portezuelo Formation is the mountain range known as Sierra del Portezuelo in Neuquén Province. This formation conformably overlies the Lisandro Formation of the Río Limay Subgroup. In the top layers it grades into the Plottier Formation, the younger formation within the Río Neuquén Subgroup. Sandstones and siltstones, probably deposited under fluvial conditions, make up the Portezuelo Formation. There are also occasional cemented claystone deposits, as well as numerous paleosols (fossil soils). The formation varies between thick throughout its range. == Fossil content ==

Many dinosaur fossils have recently been described from this formation, as well as remains of several other types of animals: • teleosteid fish including Leufuichthys • ceratodontiform lungfish including Chaoceratodus • abelisauroid theropods (A possible noasaurid and an abelisaurid) • several other theropods, including a modern, possibly galliform bird • ornithopods, including possible iguanodonts Dinosaurs Ornithischians Sauropods Theropods Crocodyliformes Pterosaurs Turtles == See also ==