 Several potential species are known; most are based on scrappy remains, and have gone through several other generic assignments.The genus is part of the complex taxonomy issues surrounding Early Cretaceous pterosaurs from Brazil and England, such as "Amblydectes", "Anhanguera", "Coloborhynchus", and "Ornithocheirus".Numerous species have been referred to this genus over time, and only those more widely connected with the genus are included here.