The material was fragmentary, and the type locality for Alanqa is Aferdou N'Chaft, near the village of Begaa and 10 kilometers (6.2 mi) to the north-east of Taouz.

Based on comparison to related species, the Alanqa saharica the individuals known from jaw specimens probably had wingspans of about 4 meters (13 ft).

However, according to Ibrahim and colleagues, the vertebra (which probably belonged to the same species) appeared to come from a larger individual, measuring about 6 meters (20 ft) in wingspan.

[6] Another analysis, this time by Nicholas Longrich and colleagues in 2018, recovered Alanqa as a thalassodromid, sister taxon to Aerotitan (a pterosaur also assigned as an azhdarchid).

On the other hand, Alanqa would be a prey item for the large predators of the ecosystem, such as theropod dinosaurs, (Spinosaurus, Carcharodontosaurus, and Sauroniops), crocodyliforms like Aegisuchus, and possibly a currently-unidentified madtsoiid snake.