''Beiguornis'' is a genus of

bohaiornithid Bohaiornithidae is a group of early predatory enantiornitheans from the early Cretaceous Period of China. All known specimens come from the Jiufotang Formation and Yixian Formation, dating to the early Aptian age, 125–120 million years ago. Boh ...

bird from the

Early Cretaceous The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Pro ...

Longjiang Formation of Inner Mongolia,

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

. The genus contains a single species, ''Beiguornis khinganensis''. ''Beiguornis'' is the first and only

enantiornithine The Enantiornithes, also known as enantiornithines or enantiornitheans in literature, are a group of extinct avialans ("birds" in the broad sense), the most abundant and diverse group known from the Mesozoic era. Almost all retained teeth and cla ...

bird known from the Longjiang Formation. In the phylogenetic analysis conducted by the describing authors, ''Beiguornis'' formed a

monophyletic In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic gro ...

group with the bohaiornithids '' Sulcavis'' and '' Zhouornis.'' Zhouornis hani

References

{{Taxonbar, from= Q110644827 Birds described in 2022 Fossil taxa described in 2022 Extinct birds of Asia Early Cretaceous dinosaurs of Asia Prehistoric bird genera Enantiornitheans