| 词条 | Cimolopterygidae |
| 释义 |
| fossil_range = Late Cretaceous, {{fossilrange|75|{{period start|Paleogene}}}} | image = Cimolopteryx.jpg | image_upright = 1.15 | image_caption = Left coracoid of a Cimolopteryx rara | taxon = Cimolopterygidae | authority = Brodkorb, 1963 | type_species = {{extinct}}Cimolopteryx rara | type_species_authority = Marsh, 1892 | subdivision_ranks = Genera[1] | subdivision =
}}Cimolopterygidae is a group of extinct birds known from the late Cretaceous Period. Remains attributed to cimolopterygids have been found in the Frenchman Formation of Saskatchewan, the Lance Formation of Wyoming, the Fox Hills Formation of Colorado, the Hell Creek Formation of Montana, and the Allen Formation of Rio Negro, Argentina. Most date to the end of the Maastrichtian age, about {{period start|Paleogene}} million years ago, though a much earlier species has also been identified from the Campanian-aged Dinosaur Park Formation of Alberta, about 75 million years ago.[1][2] References1. ^Hope, S. (2002). "The Mesozoic radiation of Neornithes." Pp. 339-388 in Chiappe, L.M. and Witmer, L. (eds.), Mesozoic Birds: Above the Heads of Dinosaurs. {{Taxonbar|from=Q21291078}}2. ^1 {{cite journal |author=Federico L. Agnolin |year=2010 |title=An avian coracoid from the Upper Cretaceous of Patagonia, Argentina |journal=Stvdia Geologica Salmanticensia |volume=46 |issue=2 |pages=99–119 |url=http://campus.usal.es/~revistas_trabajo/index.php/0211-8327/article/view/7642/8861}} 8 : Prehistoric birds|Late Cretaceous birds of Asia|Charadriiformes|Controversial bird taxa|Late Cretaceous birds of North America|Late Cretaceous first appearances|Late Cretaceous extinctions|Late Cretaceous taxonomic families |
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