Echkar Formation
Geologic formation in Niger
From Wikipedia, the free encyclopedia
The Echkar Formation is a geological formation comprising sandstones and claystones in the Agadez Region of Niger, central Africa.
| Echkar Formation | |
|---|---|
| Stratigraphic range: Late Albian-Cenomanian ~ | |
| Type | Geological formation |
| Unit of | Tegama Group |
| Underlies | Farak Formation |
| Overlies | Elrhaz Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Claystone |
| Location | |
| Coordinates | 17.9°N 5.6°E |
| Approximate paleocoordinates | 2.8°N 0.4°E |
| Region | Agadez Region |
| Country | Niger |
| Extent | Iullemmeden Basin |
| Type section | |
| Named for | Echkar, Aderbissinat |
| Lua error in Module:Location_map at line 191: No value was provided for longitude. | |
Description
Its strata date back to the Late Albian to Late Cretaceous (Cenomanian stages, about 100-95 million years ago). Dinosaur remains are among the fossils that have been recovered from the formation.[1]
Fossil content
Vertebrates
Fish
| Fish of the Echkar Formation | ||||
|---|---|---|---|---|
| Genus | Species | Material | Notes | Images |
| Ceratodus | C. sp. |  | ||
| Lepidotes | L. sp. |  | ||
| Onchopristis | O. numida |  | ||
| Platyspondylus | P. foureaui | |||
Dinosaurs
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Ornithischians
| Ornithischians of the Echkar Formation | ||||
|---|---|---|---|---|
| Genus | Species | Material | Notes | Images |
| ?Stegosauria indet. | No genus given. May not actually belong to Stegosauria. | |||
Sauropods
| Sauropods of the Echkar Formation | ||||
|---|---|---|---|---|
| Genus | Species | Material | Notes | Images |
| Aegyptosaurus | A. baharijensis |  | ||
| Rebbachisaurus | R. tamesnensis R. sp.[citation needed] |
 | ||
Theropods
| Theropods of the Echkar Formation | ||||
|---|---|---|---|---|
| Genus | Species | Material | Notes | Images |
| Bahariasaurus | B. ingens |  | ||
| Carcharodontosaurus[3] | C. iguidensis[4] |  | ||
| Elaphrosaurus | E. iguidiensis (=Theropoda indet.) | Likely an indeterminate theropod. |  | |
| Inosaurus | I. tedreftensis | |||
| Rugops | R. primus | .png) | ||
| Spinosaurus | S. sp.[4] | Teeth |  | |
Reptiles
Color key
|
Notes Uncertain or tentative taxa are in small text; |
| Reptiles of the Echkar Formation | ||||
|---|---|---|---|---|
| Genus | Species | Material | Notes | Images |
| Araripesuchus | A. rattoides |  | ||
| Elosuchus | E. sp. |  | ||
| Fortignathus | F. felixi | |||
| Kaprosuchus | K. saharicus |  | ||
| Laganosuchus | L. thaumastos |  | ||
| Testudines indet. | No genus given. | |||