Reference health
New Species of Enantiornithes (Aves: Ornithothoraces) from the Qiaotou Formation in Northern Hebei, China
21/21 checkable references clean · checked 2026-07-14
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a publisher retraction, withdrawal, or removal notice.
21 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 21 checked references that resolve
resolves10.5479/si.00810266.27.67
Discovery of a Cretaceous Bird, Apparently Ancestral to the Orders Coraciiformes and Piciformes (Aves: Carinatae)
resolves10.1080/02724634.1994.10011554
<i>Neuquenornis volans</i>, a new Late Cretaceous bird (Enantiornithes: Avisauridae) from Patagonia, Argentina
resolves10.1206/0003-0082(2007)3594[1:JBFTEC]2.0.CO;2
Juvenile Birds from the Early Cretaceous of China: Implications for Enantiornithine Ontogeny
resolves10.1007/s00114-003-0489-1
New Early Cretaceous fossil from China documents a novel trophic specialization for Mesozoic birds
resolves10.1111/j.1755-6724.2006.tb00792.x
New Eoenantiornithid Bird from the Early Cretaceous Jiufotang Formation of Western Liaoning, China
resolves10.1111/j.1755-6724.2008.tb00711.x
A New Species of <i>Cathayornis</i> from the Lower Cretaceous of Inner Mongolia, China and Its Stratigraphic Significance
resolves10.1080/02724634.2009.10010371
Phylogenetic support for a specialized clade of Cretaceous enantiornithine birds with information from a new species
resolves10.1038/382442a0
An Early Cretaceous bird from Spain and its implications for the evolution of avian flight
resolves10.1126/science.276.5318.1543
A Nestling Bird from the Lower Cretaceous of Spain: Implications for Avian Skull and Neck Evolution
resolves10.1139/e04-055
Description of a new enantiornithine bird from the Early Cretaceous of Hebei, northern China
resolves10.1111/j.1755-6724.2007.tb00995.x
A New Enantiornitine Bird with Four Long Rectrices from the Early Cretaceous of Northern Hebei, China
resolves10.1002/gj.1045
Evolutionary radiation of the Jehol Biota: chronological and ecological perspectives
resolves10.1007/BF03184320
Two new ornithurine birds from the Early Cretaceous of western Liaoning, China
resolves10.1007/s00114-001-0276-9
Largest bird from the Early Cretaceous and its implications for the earliest avian ecological diversification
resolves10.1111/j.1469-7580.2008.00880.x
Insight into diversity, body size and morphological evolution from the largest Early Cretaceous enantiornithine bird
resolves10.1016/j.cretres.2006.06.003
Palaeomagnetic and 40Ar/39Ar dating constraints on the age of the Jehol Biota and the duration of deposition of the Sihetun fossil-bearing lake sediments, northeast China
The 21 references without a DOI — listed, not checked
no DOI — not checkedHandbook of Avian Anatom: Nomina Anatomica Avium
no DOI — not checkedGlorified dinosaurs: the origin and early evolution of birds
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkedAnatomy and systematics of the Confuciusornithidae (Theropoda: Aves) from the Late Mesozoic of northeastern China
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkedMesozoic Birds of China
no DOI — not checkedThe avifauna of Emeryville shell mound
no DOI — not checkedMesozoic Jehol Biota of Western Liaoning, China
no DOI — not checkedFirst avialian bird from China (Jinfengopteryx elegans gen. et sp. nov.)
no DOI — not checkedSystema naturae, sistens regna tria naturae, in classes et ordines genera et species redacta tabulis que aeneis illustrata
no DOI — not checkedAnatomical details from a well preserved specimen of Longirostravis (Aves, Enantiornithes) from the Jiufotang Formation, Liaoning Province, China
no DOI — not checkedSanz J.L. andBonaparte J.F. 1992.A new order of birds (Class Aves) from Early Cretaceous of Spain. In:Campbell K.E.(eds.) Papers in Avian Paleontology. Honoring Pierce Brodkorb. Science Series 36 Natural History Museum of Los Angeles County 39–40.
no DOI — not checkedThe osteology of Concornis lacustris (Aves: Enantiornithes) from the Lower Cretaceous of Spain and a reexamination of its phylogenetic relationships
no DOI — not checkedMesozoic Birds: Above the Heads of Dinosaurs
no DOI — not checkedFurther support for a Cretaceous age for the feathered–dinosaur beds of Liaoning, China: New 40Ar/39Ar dating of the Yixian and Tuchengzi formations
no DOI — not checkedThe Jehol Biota
no DOI — not checkedWellnhofer P. 1974.The fifth skeletal specimen ofArchaeopteryx.Palaeontographica abt. A (147):169–216.
no DOI — not checkedThe Jehol Biota: the Emergence of Feathered Dinosaurs, Beaked Birds and Flowering Plants
no DOI — not checkedDiscovery of a new enantiornithine bird from the Early Cretaceous of Liaoning, China
no DOI — not checkedMesozoic birds of China – a synoptic review
no DOI — not checkedThe skull volume 2: patterns of structural and systematic diversity
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