Reference health
The fossil record and limb disparity of enantiornithines, the dominant flying birds of the Cretaceous
11/11 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.
15 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 11 checked references that resolve
resolves10.1080/02724634.1997.10010977
Bipedalism, flight, and the evolution of theropod locomotor diversity
resolves10.1111/j.1469-7998.2006.00261.x
Avian brachial index and wing kinematics: putting movement back into bones
resolves10.1038/382442a0
An Early Cretaceous bird from Spain and its implications for the evolution of avian flight
resolves10.1017/S0016756807003871
Large euenantiornithine birds from the Cretaceous of southern France, North America and Argentina
resolves10.1111/j.1469-7580.2008.00880.x
Insight into diversity, body size and morphological evolution from the largest Early Cretaceous enantiornithine bird
The 15 references without a DOI — listed, not checked
no DOI — not checkedChiappe, L.M. 2002: Basal bird phylogeny: problems and solutions. In Chiappe, L.M. & Witmer, L.D. (eds): Mesozoic Birds: Above the Heads of Dinosaurs, 448–472. University of California Press, Berkeley, California.
no DOI — not checkedChiappe, L.M. & Walker, C.A. 2002: Skeletal morphology and systematics of the Cretaceous Euenantiornithes (Ornithothoraces: Enantiornithes). In Chiappe, L.M. & Witmer, L.D. (eds): Mesozoic Birds: Above the Heads of Dinosaurs, 240–267. University of California Press, Berkeley, California.
no DOI — not checkedChiappe, L.M., Suzuki, S., Dyke, G.J., Watabe, M., Tsogtbaatar, D. & Barsbold, R. 2007: A new enantiornithine bird from the Late Cretaceous of the Gobi Desert. Journal of Systematic Palaeontology 4, 1–16.
no DOI — not checkedDel Hoyo J. Elliott A. & Sargatal J. 1999: Handbook of the Birds of the World (volume 5): Barn Owls to Hummingbirds 760 pp. Lynx Edicions Barcelona Spain.
no DOI — not checkedDunning J.B. Jr 1992: CRC Handbook of Avian Body Masses 371 pp. CRC Press London.
no DOI — not checkedDyke, G.J., Nudds, R.L. & Benton, M.J. 2007: Birds across the K-P boundary. The Auk 124, 339–341.
no DOI — not checkedFountaine, T.M.R., Benton, M.J., Nudds, R.L. & Dyke, G.J. 2005: The quality of the fossil record of Mesozoic birds. Proceedings of the Royal Society of London, Series B: Biological Sciences 272, 289–294.
no DOI — not checkedHou, L.-H. 1994: A late Mesozoic bird from Inner Mongolia. Vertebrata Palasiatica 32, 258–266 [in Chinese with English summary].
no DOI — not checkedKurochkin, E.N. 1995: Synopsis of Mesozoic birds and early evolution of class Aves. Archaeopteryx 13, 47–66.
no DOI — not checkedKurochkin, E.N. 2001: New ideas on origin and early evolution of birds. In Kurochkin, E.N. & Rakhimov, I.I. (eds): Achievements and Problems of Ornithology of Northern Eurasia on a Boundary of Centuries, 68–96. Magrif, Kazan, Russia [in Russian with English summary].
no DOI — not checkedNudds, R.L. 2007: Wing-bone length allometry in birds. Journal of Avian Biology 38, 515–519.
no DOI — not checkedNudds, R.L., Dyke, G.J. & Rayner, J.M.V. 2004: Forelimb proportions and the evolutionary radiation of Neornithes. Proceedings of the Royal Society London B (Suppl.) 271, 324–327.
no DOI — not checkedRayner, J.M.V. & Dyke, G.J. 1998: Comparative analysis of the limb bones of flying and non-flying vertebrates. Journal of Vertebrate Paleontology 18(3), 71A.
no DOI — not checkedRayner, J.M.V. & Dyke, G.J. 2002: Origins and evolution of diversity in the avian wing. In Bels, V., Gasc, J.P. & Casinos, A. (eds): Vertebrate Biomechanics and Evolution, 297–317. Bios Scientific Publishers, Cambridge, UK.
no DOI — not checkedSanz, J.L. & Buscalioni, A.D. 1992: A new bird from the Early Cretaceous of Las Hoyas, Spain, and the early radiation of birds. Palaeontology 35, 829–845.
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work were clean at the dated check: each resolved to a known work in a public registry, and none
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