Halcyornithidae

Halcyornithidae; Temporal range:
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Class:	Aves
Clade:	Eufalconimorphae
Family:	†Halcyornithidae; Harrison & Walker, 1972
Synonyms
	Pseudasturidae (Mayr, 2002)

Halcyornithidae is a family of fossil birds, possibly belonging to the order Psittaciformes (parrots and relatives).[1] Members of this family lived in the Eocene, around 55-48 million years ago. Fossil remains are known from the Green River Formation in the United States and from the London Clay formation in the United Kingdom.[2][3] They were probably the sister group to the owl-like Messelasturidae.[4]

Classification

Cyrilavis
Halcyornis
Pulchrapollia
Pseudasturides
Precursor?
Serudaptus

References

Ksepka; Clarke; Grande (2011). "Stem Parrots (Aves, Halcyornithidae) from the Green River Formation and a Combined Phylogeny of Pan-Psittaciformes". Journal of Paleontology. 85 (5): 835–852. doi:10.1666/10-108.1. S2CID 86618579.
Mayr, Gerald (December 2002). "On the osteology and phylogenetic affinities of the Pseudasturidae–Lower Eocene stem-group representatives of parrots (Aves, Psittaciformes)". Zoological Journal of the Linnean Society. 136 (4): 715–729. doi:10.1046/j.1096-3642.2002.00042.x.
Dyke, Gareth J.; Cooper, Joanne H. (2000). "A new psittaciform bird from the London Clay (Lower Eocene) of England". Palaeontology. 43 (2): 271–285. doi:10.1111/1475-4983.00126.
Mayr, Gerald (2011). "Well-preserved new skeleton of the Middle Eocene Messelastur substantiates sister group relationship between Messelasturidae and Halcyornithidae (Aves, ?Pan-Psittaciformes)". Journal of Systematic Palaeontology. 9 (1): 159–171. doi:10.1080/14772019.2010.505252. S2CID 84569222.

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[1] Ksepka; Clarke; Grande (2011). "Stem Parrots (Aves, Halcyornithidae) from the Green River Formation and a Combined Phylogeny of Pan-Psittaciformes". Journal of Paleontology. 85 (5): 835–852. doi:10.1666/10-108.1. S2CID 86618579.

[2] Mayr, Gerald (December 2002). "On the osteology and phylogenetic affinities of the Pseudasturidae–Lower Eocene stem-group representatives of parrots (Aves, Psittaciformes)". Zoological Journal of the Linnean Society. 136 (4): 715–729. doi:10.1046/j.1096-3642.2002.00042.x.

[3] Dyke, Gareth J.; Cooper, Joanne H. (2000). "A new psittaciform bird from the London Clay (Lower Eocene) of England". Palaeontology. 43 (2): 271–285. doi:10.1111/1475-4983.00126.

[4] Mayr, Gerald (2011). "Well-preserved new skeleton of the Middle Eocene Messelastur substantiates sister group relationship between Messelasturidae and Halcyornithidae (Aves, ?Pan-Psittaciformes)". Journal of Systematic Palaeontology. 9 (1): 159–171. doi:10.1080/14772019.2010.505252. S2CID 84569222.