Mongolian Azdarchid

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Azdarchid indet., known as "Mongolian Giant" or "Gobi Azdarchid", is an unconfirmed genus of large extinct Azdarchid Pterosaurs that lived from 72 Million to 66 Million Years ago in Nemegt Formation of Mongolia, during the Maastrichtian stage, the final stage of the Cretaceous period.

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Created May 15, 2025Updated Jul 30, 2025Archived since Oct 20, 2026

MAIN INFORMATION: Azdarchid indet., known as "Mongolian Giant" or "Gobi Azdarchid", is an unconfirmed genus of large extinct Azdarchid Pterosaurs that lived from 72 Million to 66 Million Years ago in Nemegt Formation of Mongolia, during the Maastrichtian stage, the final stage of the Cretaceous period.

PHYSICAL APPEARANCE: The Mongolian Azdarchid, just like many other pterosaurs, looked like a normal Azdarchidae, having fur as skin, having a crutch-like arms with webs in between the elbow that would form the wings when flying, and its legs being just like Quetzalcoatlus, similar to that of a flying squirrel. The Mongolian Azdarchid had a slightly - not significantly, shorter beak just like Quetzalcoatlus. Mongolian Azdarchid had a short head crest situated on the base of its beak, similar to Quetzalcoatlus, but was put only on females.

APPEARANCE: Mongolian Azdarchid would mainly be colored a bland color of dark brown on most parts of itself and the crest, but with a lighter tint of brown reaching from the head to the border of the beak and head.

PALEONTOLOGY: Much like Phosphatodraco from Morocco, this pterosaur, still unnamed as of 2025, is only known from a few neck vertebrae. But from these fragmentary remains, it is believed that the Mongolian azhdarchid is one of the largest pterosaurs known. Comparison of its fossils with those of other azhdarchids imply that it may have been like Hatzegopteryx in terms of proportion, with a wingspan of 10 - 12 meters (33 - 40 feet), as well as a shorter but stockier neck than other azhdarchids. Furthermore, assuming that they are indeed similar, then the Mongolian azhdarchid perhaps also had Hatzegopteryx's short but stout, blunt beak as opposed to the slender, spear-like beak seen in other azhdarchids like Quetzalcoatlus, an adaptation that allows stocky azhdarchids to bash prey too big to swallow whole, and thus attack animals that their sleeker relatives would not normally target.

The Ömnögovi is the largest aimag (province) of Mongolia, found in the south of the country, in the northeast portion of the Gobi Desert. Within this aimag is an area called the Nemegt Basin, known locally as the "Valley of Dragons" due to its rich fossil content. It encompasses three formations showing the states the area underwent throughout the Late Cretaceous, namely, the Djadochta (75 - 71 million years old), Barun Goyot (72 - 71 million years old), and Nemegt (70 million years old) Formations. The Gurilin Tsav azhdarchid lived in the last of the three formations, which showed evidence of a rich, humid environment with large river channels, tidal flats, and forests. However, the Nemegt Formation is also known to have undergone periodic droughts, and there is precedence for arid regions much like the Gobi Desert today existing in Mongolia during those times, thus justifying the depiction of this pterosaur living in or at least traveling through a vast desert environment.

SETTINGS: Nemegt Formation, Mongolia

SIZE: Similar to Hatzegopteryx, the Mongolian Azdarchid was over 4.7 meters tall on average, and its wingspan was 10 meters long from across both wings.

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***Over 70 Million Years ago in the Maastrichtian stage of Cretaceous, would lie parts of a desert in the Mongolian Deserts of Nemegt Formation. Despite Yardangs and Mesas filling these parts of Nemegt Formation, there were a few shrubs and vegetation that grew here - despite no arrivals of any herbivores. These parts were taken half and half by either carnivores or herbivores, but carnivores mostly dominated the area.

A carcass of a Nemegtosaurus - a Titanosaur Sauropod - would lie in one spot in these deserts, its skin on its long neck was bared to skeleton, as it had been previously hunted to death by a pack of Tarbosaurus. It was the reason why most carnivores scavenged to this corpse of a lucky source for food. But a carnivore that preferred to mostly scavenge here was a flying Azdarchid Pterosaur, similar to Quetzalcoatlus in looks but similar to Hatzegopteryx in size, this flying giant preferred to hunt tiny vertebrates, but scavenge food for luck. What this Pterosaur was, would be named...

The Mongolian Azdarchid.

Having many other nicknames, the Gobi Azdarchid or the Mongolian Giant, it was mainly called "Azdarchidae indet", why? Because this Pterosaur was unfortunately one that was found only by a few fragments of its existing, specifically neck vertebrates of itself. Having a short and barely long crest, its fur mainly colored brown, this Pterosaur was pretty similar to Quetzalcoatlus. But, the Mongolian Azdarchid was similar in size to Hatzegopteryx, the largest in mass, but the Mongolian Azdarchid wasn't the largest (nor confirmed) Pterosaur in mass. Up in the skies of the noon, a flock of three of these Azdarchids would fly in the air; their dense, brown fur slightly made their flying webs less transparent against the sun.

The flock of Mongolian Azdarchids started to fly down to the carcass of the dead Nemegtosaurus, their descent was similar to the vultures - despite Pterosaurs were NOT related to birds at all, despite the caricature of the flying reptilians. The three Mongolian Azdarchids finally landed around the carcass, their spread wings turning into front arms that acted like crutches as they approached the carcass. As the Mongolian Azdarchids got close to the carcass, the three then went having a feast, their long beaks gobbling and pecking on the available meat that was still plastered but exposed at its body, making up an example of such a scavenger fest. As long as no dinosaurs appeared, these Pterosaurs were fine.

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