Mistralazhdarcho is a genus of azhdarchid pterosaur that lived during the Campanian and Maastrichtian ages of the Late Cretaceous period in what is now France.

These remains would later be made the holotype specimen of the new genus and type species Mistralazhdarcho maggii, named and described in 2018 by Valentin, along with paleontologists Romain Vullo, Géraldine Garcia, Pascal Godefroit, and Aude Cincotta.

The generic name combines the mistral, a typical northern wind from the area, and the related genus Azhdarcho.

The specific name honors Jean-Pierre Maggi, the mayor of Velaux, who supported the La Bastide Neuve paleontological project.

Because of its size, Mistralazhdarcho most likely represents a mid-sized class of European azhdarchid, its contemporary relatives in Europe were either small or gigantic.

In 1992, a rich fossil site was discovered by French paleontologist Xavier Valentin at Velaux–La Bastide Neuve, in the south of France.

[1] They were subsequently reported in the scientific literature in 2015 by paleontologist Aude Cincotta and colleagues, along with numerous other non-pterosaur fossil remains.

The specific name maggii honors Jean-Pierre Maggi, the mayor of Velaux, for his support of the La Bastide Neuve paleontological project.

The upper surface of the symphysis or fusion of the lower jaws shows elevated but blunt ridges on its edges.

[1] In 2021, in a more thorough analysis of the already mentioned genus Aerotitan, paleontologist Rodrigo Pêgas and colleagues compared its holotype to those of other azhdarchids, where they concluded that, among them, Mistralazhdarcho shared that most common features, especially its mandibular tip.

For example, a 2021 study by American paleontologist Brian Andres recovered Mistralazhdarcho as the sister taxon of Aerotitan in the subfamily Azhdarchinae within Azhdarchidae, in the most derived (advanced) position.

[4] The close relationship between Mistralazhdarcho and Aerotitan would later be demonstrated again in a phylogenetic analysis by Pêgas and colleagues in 2023, where they found both azhdarchids in a trichotomy with the genus Arambourgiania.

Azhdarcho lancicollis Albadraco tharmisensis Aerotitan sudamericanus Mistralazhdarcho maggii Aralazhdarcho bostobensis Phosphatodraco mauritanicus Eurazhdarcho langendorfensis Zhejiangopterus linhaiensis Wellnhopterus brevirostris Cryodrakon boreas Hatzegopteryx thambema Arambourgiania philadelphiae Quetzalcoatlus lawsoni Quetzalcoatlus northropi Cladogram by Pêgas and colleagues (2023).