Dukamaje Formation
Kafuwar Dukamaje wani tsari ne na yanayin kasa a Nijar da Najeriya wanda tsarinsa ya samo asali tun daga Late Cretaceous.Ragowar Dinosaur na daga cikin burbushin da aka gano daga samuwar. An kuma gano dimbin burbushin Mosasaur daga wannan kafuwar,musamman daga yankin da ke kusa da Dutsen Igdaman.

Abun cikin burbushin halittu

Duba kuma 

 Jerin abubuwan halittar dutse masu ɗauke da dinosaur
 Jerin rukunin rukunonin burbushin halittu a Afirka
 Jerin rukunin rukunan burbushin halittu a Nijar
 Geology na Nijar
 Geology na Najeriya