The Exu Formation is an Albian geologic formation in Brazil. Pterosaur fossils of Lophocratia indet. have been recovered from the formation.

• List of pterosaur-bearing stratigraphic units
• Basin history of the Araripe Basin

• Fabin, Carlos E.; Correia Filho, Osvaldo J.; Alencar, Márcio L.; Barbosa, José A.; de Miranda, Tiago S.; Neumann, Virgínio H.; Gomes, Igor F.; de Santana, Felipe R. (2018), "Stratigraphic Relations of the Ipubi Formation: Siliciclastic-Evaporitic Succession of the Araripe Basin" (PDF), Anais da Academia Brasileira de Ciências, 90 (2 suppl 1): 2049–2071, doi:10.1590/0001-3765201820170526, PMID 29947671, retrieved 2018-10-05
• Martill, D. M (2008), "First pterosaur remains from the Exu Formation (Cretaceous) of the Araripe Basin, Brazil", Zitteliana B, 28: 243–248