Dukamaje Formation
The Dukamaje Formation is a geological formation in Niger and Nigeria whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. A wealth of Mosasaur fossils have also been recovered from this formation, particularly from the area around Mt. Igdaman.
Fossil content
;Other reptilesSokotosuchus ianwilsoniPalaeophis sp.Podocnemis sp.Trematochampsa taquetiLibycosuchus sp.;FishesAsteracanthus aegyptiacusIgdabatis sigmodonLamna nigerianaSchizorhiza stromeriStephanodus lybicusStratodus apicalisIschyrhiza nigeriensisCeratodus sp.Ginglymostoma sp.
- ''Pycnodus sp.''