<i>Cryodrakon boreas</i>, gen. et sp. nov., a Late Cretaceous Canadian azhdarchid pterosaur

Azhdarchid pterosaurs have been known since 1972 from upper Campanian deposits of Alberta, Canada. Originally represented by only very fragmentary remains tentatively assigned to the genus <i>Quetzalcoatlus</i>, additional material uncovered over the years has revealed that the taxonomic identity of the Alberta pterosaur material is at odds with this in the light of the growing understanding of azhdarchid diversity. Here, we describe previously undocumented pterosaur remains from Alberta and reassess previously studied material. The specimens collected from the Dinosaur Park Formation can be assigned to a new genus and species <i>Cryodrakon boreas</i>, gen. et sp. nov. The largest elements referable to this taxon suggest that this genus reached sizes comparable to those of other giant azhdarchids.自1972年起，加拿大阿尔伯塔省的坎潘阶上部地层中便有了神龙翼龙类（Azhdarchid）翼龙的化石记录。最初该类群仅以极为破碎的化石残骸为代表，曾被暂时归入风神翼龙属（Quetzalcoatlus）。但随着多年来发掘出更多相关标本，结合学界对神龙翼龙科多样性认知的不断深化，如今可确认阿尔伯塔省这批翼龙化石的分类学归属与此前的判定存在分歧。本文记述了一批此前未被正式报道的阿尔伯塔省翼龙化石，并对已有研究的标本进行了重新评估。采自恐龙公园组（Dinosaur Park Formation）的这批标本可被归入一个全新的属种——北风冰龙（Cryodrakon boreas），即新属新种（gen. et sp. nov.）。该类群的最大体型标本显示，这一新属的体型可与其他巨型神龙翼龙科成员相媲美。