
Infernodrakon (meaning "dragon from hell") is a genus of azhdarchid pterosaurs from the Late Cretaceous Hell Creek Formation of Montana, United States. The genus contains a single species, I. hastacollis, known from a single neck vertebra. Based on comparisons with related azhdarchids, it probably had a wingspan of about .
Infernodrakon (meaning "dragon from hell") is a genus of azhdarchid pterosaurs from the Late Cretaceous Hell Creek Formation of Montana, United States. The genus contains a single species, I. hastacollis, known from a single neck vertebra. Based on comparisons with related azhdarchids, it probably had a wingspan of about .
== Discovery and naming == thumb|left|Holotype at the [[Burpee Museum of Natural History]] In 2002, a tyrannosauroid specimen (BMR P2002.4.1, "Jane", now the holotype of Nanotyrannus lethaeus) was recovered from strata belonging to the Maastrichtian-age Hell Creek Formation in Carter County, Montana, United States. Alongside that specimen was the fifth cervical (neck) vertebra of an azhdarchid pterosaur. Catalogued as BMR P2002.2, it was originally assigned to cf. Quetzalcoatlus sp. In 2014, Alexander Averianov identified the specimen as indeterminate azhdarchid. In 2021, Brian Andres and Wann Langston Jr. classified BMR P2002.2 more broadly as an indeterminate azhdarchiform.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).