The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.
Avian Paternal Care Had Dinosaur Origin
Abstract
The repeated discovery of adult dinosaurs in close association with egg clutches leads to speculation over the type and extent of care exhibited by these extinct animals for their eggs and young. To assess parental care in Cretaceous troodontid and oviraptorid dinosaurs, we examined clutch volume and the bone histology of brooding adults. In comparison to four archosaur care regressions, the relatively large clutch volumes of Troodon, Oviraptor , and Citipati scale most closely with a bird-paternal care model. Clutch-associated adults lack the maternal and reproductively associated histologic features common to extant archosaurs. Large clutch volumes and a suite of reproductive features shared only with birds favor paternal care, possibly within a polygamous mating system. Paternal care in both troodontids and oviraptorids indicates that this care system evolved before the emergence of birds and represents birds' ancestral condition. In extant birds and over most adult sizes, paternal and biparental care correspond to the largest and smallest relative clutch volumes, respectively.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“For example, by mapping the known reproductive behaviors of non-avian dinosaurs on a cladogram, including the social behaviors of nest attendance, parental protection, brooding, and communal nesting, Horner (2000) revealed that many of the reproductive traits of birds may have been derived from both their archosaurian and dinosaurian ancestors (see also Varricchio et al. 2008, arguing that”
From The evolution of sociality and the polyvagal theory (2023) · cites this paper as Varricchio et al., 2008
Citations
Cites
The Evolution of Parental Care
Clutton‐Brock, T. H. (2019) · Princeton University Press eBooks · doi:10.2307/j.ctvs32ssj · Cited by 3,143
The Evolution of Parental Care
Clutton‐Brock, T. H. (1991) · Princeton University Press eBooks · doi:10.1515/9780691206981 · Cited by 2,785
Fitting Models to Biological Data Using Linear and Nonlinear Regression
Motulsky, H. J., & Christopoulos, A. (2004) · doi:10.1093/oso/9780195171792.001.0001 · Cited by 1,434
Sereno, P. C. (1999) · Science · doi:10.1126/science.284.5423.2137 · Cited by 835
The Evolution of Avian Breeding Systems
(2000) · The Auk · doi:10.1642/0004-8038(2000)117[0531:teoabs]2.0.co;2 · Cited by 305
Norell, M. A., Clark, J. M., Chiappe, L. M., & Dashzeveg, D. (1995) · Nature · doi:10.1038/378774a0 · Cited by 290
Self-citationThe Evolution of Avian Breeding Systems
Ligon, J. D. (1999) · doi:10.1093/oso/9780198549130.001.0001 · Cited by 280
Sexual maturity in growing dinosaurs does not fit reptilian growth models
Lee, A. H., & Werning, S. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0708903105 · Cited by 269
Calcium in reproductive physiology.
Simkiss, K. (1967) · Cited by 236
Varricchio, D. J., Jackson, F. D., Borkowski, J. J., & Horner, J. R. (1997) · Nature · doi:10.1038/385247a0 · Cited by 217
Self-citation
Research works printed but not linked: 7
- R. Shine, in Biology of the Reptilia: Volume 16, Ecology B, C. Gans, R. B. Huey, Eds. (Liss, New York, 1988), pp. 276–329.
- A. Chinsamy, Palaeontol. Afr.27, 77 (1990).
- D. J. Varricchio, F. D. Jackson, in Feathered Dragons, P. J. Currie, E. B. Koppelhus, M. A. Shugar, J. L. Wright, Eds. (Indiana Univ. Press, Bloomington, 2004), pp. 215–233.
- A. Elzanowksi, in Acta XVIII Congressus Internationalis Ornithologici, V. D. Ilyichev, V. M. Gavrilov, Eds. (Academy of Sciences of the USSR, Moscow, 1985), pp. 178–183.
- J. R. Horner, in Dinosaurs Past and Present, Volume II, S. J. Czerkas, E. C. Olson, Eds. (Univ. of Washington Press, Seattle, 1987), pp. 51–63.
- S. L. Vehrencamp, Behav. Ecol.11, 334 (1999).
- J. Van Rhijn, Neth. J. Zool.34, 103 (1984).
Cited by
Sorted by citations
Campione, N. E., & Evans, D. C. (2012) · BMC Biology · doi:10.1186/1741-7007-10-60 · Cited by 475
An integrative approach to understanding bird origins
Xu, X., Zhou, Z., Dudley, R., Mackem, S., Chuong, C.-M., Erickson, G. M., & Varricchio, D. J. (2014) · Science · doi:10.1126/science.1253293 · Cited by 319
Self-citationSemiaquatic adaptations in a giant predatory dinosaur
Ibrahim, N., Sereno, P. C., Sasso, C. D., Maganuco, S., Fabbri, M., Martill, D. M., Zouhri, S., Myhrvold, N., & Iurino, D. A. (2014) · Science · doi:10.1126/science.1258750 · Cited by 246
Campione, N. E., Evans, D. C., Brown, C. M., & Carrano, M. T. (2014) · Methods in Ecology and Evolution · doi:10.1111/2041-210x.12226 · Cited by 208
Patterns of parental care in vertebrates
Balshine, S. (2012) · Oxford University Press eBooks · doi:10.1093/acprof:oso/9780199692576.003.0004 · Cited by 188
Metadata
- Authors
- Varricchio, D. J., Moore, J. R., Erickson, G. M., Norell, M. A., Jackson, F. D., & Borkowski, J. J.
- Affiliations
- Florida State University (US)
- Corresponding author
- Varricchio, David J.
- Venue
- Science
- Published
- 2008-12-19
- Volume
- 322
- Issue
- 5909
- Pages
- 1826-1828
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2055090154
- Cited by
- 177
- References
- 25
- Citations by year
- 2026: 5 · 2025: 8 · 2024: 4 · 2023: 12 · 2022: 8 · 2021: 13 · 2020: 10 · 2019: 8 · 2018: 9 · 2017: 10 · 2016: 8 · 2015: 26 · 2014: 14 · 2013: 11 · 2012: 8
- FWCI
- 5.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
- Physical Sciences › Environmental Science › Ecology › Avian ecology and behavior
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
- Keywords
- paternal care, Troodontidae, Oviraptoridae, bone histology, archosaurs, avian evolution, biparental care, polygamy, Cretaceous dinosaurs, egg clutches
- MeSH terms
- Animals, Behavior, Animal, Birds, Bone and Bones, Biological Evolution, Female, Fossils, Male, Maternal Behavior, Nesting Behavior, Paternal Behavior, Regression Analysis, Sexual Behavior, Animal, Dinosaurs, Clutch Size
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
