La Colonia Formation
| La Colonia Formation Stratigraphic range: Maastrichtian |
|
|---|---|
| Type | Geological formation |
| Overlies | Cerro Barcino Formation |
| Location | |
| Region | Chubut Province |
| Country |
 Argentina
|
The La Colonia Formation is a geological formation in Argentina whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.
Originally thought to be Campanian in age or earlier, studies of underlying formations have made a Maastrichtian (70–66 million years ago) age more likely.
The paleoflora was known for its aquatic components, Paleoazolla and Regnellidium. However, recent paleobotanical discoveries at the Cañadón del Irupé locality have revealed the presence of a more diverse range of plants associated with these water bodies, including pteridophytes, gymnosperms, and various angiosperms. Among these are fossil leaves and fruits assignable to Nelumbonaceae.
P. gasparinae
"skull fragments and several postcranial elements including a nearly complete vertebral column."
Over 300 mammal specimens have been found in the La Colonia formation.
A possible gondwanatherian or multituberculate.
C. sastrei
"Nearly Complete skeleton and skull."
An abelisaurid.
Hadrosauridae indet.
Indeterminate
An indeterminate hadrosaurid.
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Wikipedia