La Colonia Formation Stratigraphic range: Maastrichtian |
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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.[1]
Originally thought to be Campanian in age or earlier, studies of underlying formations have made a Maastrichtian (70-65 million years ago) age more likely.[2]
Contents |
Fossil leaves and fruits assignable to Nelumbonaceae have been found in the Cañadón del Irupé locality of the La Colonia Formation.[3]
Turtles reported from the La Colonia Formation | ||||||
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Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
P. gasparinae |
"skull fragments and several postcranial elements including a nearly complete vertebral column."[4] |
Over 300 mammal specimens have been found in the La Colonia formation.[5]
Mammals of the La Colonia Formation | ||||
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Taxa | Presence | Notes | Images | |
A possible gondwanatherian or multituberculate. |
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Dinosaurs reported from the La Colonia Formation | ||||||
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Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
C. sastrei |
"Complete skeleton and skull."[7] |
An abelisaurid. |