Dukamaje Formation, Geological formation in Tahoua Region, Niger
The Dukamaje Formation is a geological deposit in the Tahoua Region spread across the Iullemmeden Basin. It consists of alternating layers of mudstone, shale, siltstone, marl, and gypsum that accumulated under varying water and climate conditions.
The formation dates from the Late Cretaceous period, particularly the Maastrichtian age, when the area was covered by sea. It holds numerous fossil remains of marine reptiles and dinosaurs that lived in those ancient waters.
Local researchers and international scientists regularly conduct field studies at this formation to examine its geological and paleontological features.
The site is remote and accessible only with specialized vehicles and proper permits. Visitors should bring sufficient water and supplies to manage the harsh desert heat and prepare for extensive travel times.
The site has yielded several mosasaur skeletons, including specimens of Goronyosaurus nigeriensis, predators adapted to hunting in murky ocean waters. These marine reptiles demonstrate how different hunter species developed specialized abilities for Cretaceous sea conditions.
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