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Bold ranks show taxa that will be shown in taxoboxes
because rank is principal or always_display=yes.

Ancestral taxa
Domain: Eukaryota /displayed  [ Taxonomy; ]
Clade: Amorphea  [ Taxonomy; ]
Clade: Obazoa  [ Taxonomy; ]
(unranked): Opisthokonta  [ Taxonomy; ]
(unranked): Holozoa  [ Taxonomy; ]
(unranked): Filozoa  [ Taxonomy; ]
Clade: Choanozoa  [ Taxonomy; ]
Kingdom: Animalia  [ Taxonomy; ]
Subkingdom: Eumetazoa  [ Taxonomy; ]
Clade: ParaHoxozoa  [ Taxonomy; ]
Clade: Bilateria  [ Taxonomy; ]
Clade: Nephrozoa  [ Taxonomy; ]
Superphylum: Deuterostomia  [ Taxonomy; ]
Phylum: Chordata  [ Taxonomy; ]
Clade: Olfactores  [ Taxonomy; ]
Subphylum: Vertebrata  [ Taxonomy; ]
Infraphylum: Gnathostomata  [ Taxonomy; ]
Clade: Eugnathostomata  [ Taxonomy; ]
Clade: Teleostomi  [ Taxonomy; ]
Superclass: Tetrapoda  [ Taxonomy; ]
Clade: Reptiliomorpha  [ Taxonomy; ]
Clade: Amniota  [ Taxonomy; ]
Clade: Sauropsida  [ Taxonomy; ]
..... .....
Clade: Archosauria /skip  [ Taxonomy; ]
..... .....
Clade: Avemetatarsalia /skip  [ Taxonomy; ]
..... .....
Clade: Dinosauria /skip  [ Taxonomy; ]
..... .....
Clade: Theropoda /skip  [ Taxonomy; ]
..... .....
Clade: Ornithurae /skip  [ Taxonomy; ]
Class: Aves  [ Taxonomy; ]
Infraclass: Neognathae  [ Taxonomy; ]
Clade: Neoaves  [ Taxonomy; ]
Clade: Passerea  [ Taxonomy; ]
Clade: Telluraves  [ Taxonomy; ]
Clade: Australaves  [ Taxonomy; ]
Clade: Eufalconimorphae  [ Taxonomy; ]
Family: Halcyornithidae  [ Taxonomy; ]
Genus: Halcyornis  [ Taxonomy; ]


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Parent: Halcyornithidae [ Taxonomy; ]
Rank: genus (displays as Genus)
Link: Halcyornis
Extinct: yes
Always displayed: yes (major rank)
Taxonomic references: Harrison, Colin James Oliver; Walker, Cyriil Alexander (31 October 1972). "The affinites of Halcyornis from the lower Eocene". Bulletin of the British Museum (Natural History) Geology. 21 (4) – via Biodiversity Library.

Mayr, Gerald (2007-07-11). "New specimens of Eocene stem-group psittaciform birds may shed light on the affinities of the first named fossil bird, Halcyornis toliapicus KOENIG, 1825". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen: 207–213. doi: 10.1127/0077-7749/2007/0244-0207.

Parent's taxonomic references: Mayr, Gerald (2022). Paleogene fossil birds. Fascinating life sciences (2nd ed.). Cham: Springer. ISBN  978-3-030-87644-9.