| fossil_range = <{{br />}}{{fossilrange|72|0|[[Zaman Kapur Akhir]] – sekarang, 72–0 [[Ma]]| | earliest=115.5|PS= |ref=<ref name="Field2020">{{Cite journal|title=Late Cretaceous neornithine from Europe illuminates the origins of crown birds|last1=Field|first1=Daniel J.|last2=Benito|first2=Juan|date=March 2020|journal=Nature|issue=7799|doi=10.1038/s41586-020-2096-0|volume=579|pages=397–401|issn=0028-0836 |last3=Chen|first3=Albert|last4=Jagt|first4=John W. M.|last5=Ksepka|first5=Daniel T.|pmid=32188952|bibcode=2020Natur.579..397F|s2cid=212937591|url=https://www.repository.cam.ac.uk/handle/1810/303639}}</ref><ref name="DePietriWilaru">{{cite journal |last1=De Pietri |first1=Vanesa L. |last2=Scofield |first2=R. Paul |last3=Zelenkov |first3=Nikita |last4=Boles |first4=Walter E. |last5=Worthy |first5=Trevor H. |title=The unexpected survival of an ancient lineage of anseriform birds into the Neogene of Australia: the youngest record of Presbyornithidae |journal=Royal Society Open Science |date=February 2016 |volume=3 |issue=2 |pages=150635 |doi=10.1098/rsos.150635 |pmid=26998335 |pmc=4785986 |bibcode=2016RSOS....350635D |doi-access=free }}</ref>}}Kemungkinan Zaman [[Kapur Awal]] atau asal usul Zaman Kapur Akhir awal berdasarkan [[jam molekuler]]<ref name="Yonezawa2017">{{cite journal |author=Yonezawa, T. |display-authors=et al |date=2017 |title=Phylogenomics and Morphology of Extinct Paleognaths Reveal the Origin and Evolution of the Ratites |journal=Current Biology |volume=27 |number=1 |pages=68–77 |doi=10.1016/j.cub.2016.10.029|pmid=27989673 |doi-access=free }}</ref><ref name="kuhl2020">{{cite journal |first1=H. |last1=Kuhl |first2=C. |last2=Frankl-Vilches |first3=A. |last3=Bakker |first4=G. |last4=Mayr |first5=G. |last5=Nikolaus |first6=S. T. |last6=Boerno |first7=S. |last7=Klages |first8=B. |last8=Timmermann |first9=M. |last9=Gahr |date=2020 |volume=38 |number=1 |pages=108–127 |url=https://academic.oup.com/mbe/advance-article/doi/10.1093/molbev/msaa191/5891114 |title=An unbiased molecular approach using 3'UTRs resolves the avian family-level tree of life |journal=Molecular Biology and Evolution |doi=10.1093/molbev/msaa191|pmid=32781465 |pmc=7783168 |hdl=21.11116/0000-0007-B72A-C |hdl-access=free }}</ref><ref name="crouch2022">{{cite journal |last1=Crouch |first1=N. M. A. |year=2022 |title=Interpreting the fossil record and the origination of birds |journal=bioRxiv |doi=10.1101/2022.05.19.492716|s2cid=249047881 }}</ref>
