The DOI matches its Crossref record; 17 of the 18 references it cites were found in a registry or an index, and 1 are not checked yet.
The colour of fossil feathers
Open accessAbstract
Feathers are complex integumentary appendages of birds and some other theropod dinosaurs. They are frequently coloured and function in camouflage and display. Previous investigations have concluded that fossil feathers are preserved as carbonized traces composed of feather-degrading bacteria. Here, an investigation of a colour-banded feather from the Lower Cretaceous Crato Formation of Brazil revealed that the dark bands are preserved as elongate, oblate carbonaceous bodies 1-2 microm long, whereas the light bands retain only relief traces on the rock matrix. Energy dispersive X-ray analysis showed that the dark bands preserve a substantial amount of carbon, whereas the light bands show no carbon residue. Comparison of these oblate fossil bodies with the structure of black feathers from a living bird indicates that they are the eumelanin-containing melanosomes. We conclude that most fossil feathers are preserved as melanosomes, and that the distribution of these structures in fossil feathers can preserve the colour pattern in the original feather. The discovery of preserved melanosomes opens up the possibility of interpreting the colour of extinct birds and other dinosaurs.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
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?
The source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“the morphological properties of the associated melanosomes have been used to reconstruct various plumage colours of extinct dinosaurs 12-16 .”
From New evidence on the colour and nature of the isolated Archaeopteryx feather (2012) · cites this paper as [15]
Experimental — accuracy not yet measuredThe source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“indicating low density and most likely an organic composition, corroborated by their dark coloration, perhaps due to melanin or another recalcitrant pigment [47–49”
From Cambrian Sessile, Suspension Feeding Stem-Group Ctenophores and Evolution of the Comb Jelly Body Plan (2019) · cites this paper as [49]
Experimental — accuracy not yet measuredThe cited source says what the claim attributes to it.
In the citing paper
“Other melanosome imprints are aligned along the longitudinal axis of a proximal barbule (Fig. 3c,d), an arrangement previously reported in the barbules of extant and more recent fossil bird feathers 14,15 .”
From New evidence on the colour and nature of the isolated Archaeopteryx feather (2012) · cites this paper as [15]
The cited source says what the claim attributes to it.
In the citing paper
“Similar fossilized feather traces have been found to preserve colour-imparting organelles called melanosomes 12-16 , which consist of melanins, the most widespread and abundant pigments in animals and found in the feathers of all birds (excluding albinos) 4 .”
From New evidence on the colour and nature of the isolated Archaeopteryx feather (2012) · cites this paper as [15]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Core complex mechanics: From the Gulf of Corinth to the Snake Range
Chéry, J. (2001) · NERC Open Research Archive (Natural Environment Research Council) · doi:10.1130/0091-7613 · Cited by 940
Coloration strategies in peacock feathers
Zi, J., Yu, X., Li, Y., Hu, X., Xu, C., Wang, X., Liu, X., & Fu, R. (2003) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.2133313100 · Cited by 588
Two feathered dinosaurs from northeastern China
Qiang, J., Currie, P. J., Norell, M. A., & Shu-An, J. (1998) · Nature · doi:10.1038/31635 · Cited by 580
The melanosome: membrane dynamics in black and white
Marks, M. S., & Seabra, M. C. (2001) · Nature Reviews Molecular Cell Biology · doi:10.1038/35096009 · Cited by 464
Anatomy, Physics, and Evolution of Structural Colors
Prum, R. (2006) · Bird Coloration, Volume 1 · doi:10.2307/j.ctv22jnscm.10 · Cited by 207
Self-citationLiu, Y., & Simon, J. D. (2003) · Pigment Cell Research · doi:10.1046/j.1600-0749.2003.00098.x · Cited by 185
BACTERIAL DEGRADATION OF BLACK AND WHITE FEATHERS
Goldstein, G., Flory, K. R., Browne, B. A., Majid, S., Ichida, J. M., & Burtt Jr., E. H. (2004) · The Auk · doi:10.1642/0004-8038(2004)121[0656:bdobaw]2.0.co;2 · Cited by 178
Comparison of Structural and Chemical Properties of Black and Red Human Hair Melanosomes¶
Liu, Y., Hong, L., Wakamatsu, K., Ito, S., Adhyaru, B. B., Cheng, C., Bowers, C. R., & Simon, J. D. (2005) · Photochemistry and Photobiology · doi:10.1562/2004-08-03-ra-259.1 · Cited by 173
How feather colour reflects its melanin content
McGraw, K. J., Safran, R. J., & Wakamatsu, K. (2005) · Functional Ecology · doi:10.1111/j.1365-2435.2005.01032.x · Cited by 171
Mechanics of Melanin-Based Coloration
McGraw, K. (2006) · Bird Coloration, Volume 1 · doi:10.2307/j.ctv22jnscm.9 · Cited by 168
Flagged first, then by citations
Research works printed but not linked: 3
- Doguzhaeva L, 2004, Occurrence of ink in Paleozoic and Mesozoic coleoids (Cephalopoda), Mitt. Geol.-Paläont. Inst. Univ. Hamburg, 88, 145
- Durrer H. 1986 The skin of birds: coloration. In Biology of the integument 2: vertebrates vol. 2 (eds J. Bereiter-Hahn A. G. Matoltsky & K. S. Richards) pp. 239–247. Berlin Germany: Springer.
- Wuttke M, 1983, “Weichteil-Erhaltung” durch lithifizierte Mikroorganismen bei mittel-eozänen Vertebraten aus den Ölschiefern der “Grube Messel” bei Darmstadt, Senck. Leth, 64, 509
Cited by
Sorted by citations
Fossilized melanosomes and the colour of Cretaceous dinosaurs and birds
Zhang, F., Kearns, S. L., Orr, P. J., Benton, M. J., Zhou, Z., Johnson, D., Xu, X., & Wang, X. (2010) · Nature · doi:10.1038/nature08740 · Cited by 303
Plumage Color Patterns of an Extinct Dinosaur
Li, Q., Gao, K.-Q., Vinther, J., Shawkey, M. D., Clarke, J. A., D’Alba, L., Meng, Q., Briggs, D. E. G., & Prum, R. O. (2010) · Science · doi:10.1126/science.1186290 · Cited by 278
Self-citationBiology of the Sauropod Dinosaurs: Understanding the Life of Giants
Klein, N., Remes, K., Gee, C., & Sander, P. (2011) · Choice Reviews Online · doi:10.5860/choice.49-0282 · Cited by 114
Melanosomes: Biogenesis, Properties, and Evolution of an Ancient Organelle
D’Alba, L., & Shawkey, M. D. (2018) · Physiological Reviews · doi:10.1152/physrev.00059.2017 · Cited by 264
Ancient biomolecules: Their origins, fossilization, and role in revealing the history of life
Briggs, D. E. G., & Summons, R. E. (2014) · BioEssays · doi:10.1002/bies.201400010 · Cited by 223
Self-citation
Metadata
- Authors
- Vinther, J., Briggs, D. E. G., Prum, R. O., & Saranathan, V.
- Affiliations
- Yale University (US)
- Corresponding author
- Briggs, Derek E.G
- Venue
- Biology Letters
- Publisher
- The Royal Society
- Published
- 2008-07-08
- Volume
- 4
- Issue
- 5
- Pages
- 522-525
- ISSN
- 1744-9561 (ISSN-L)
- 1744-957X
- PMC
- PMC2610093
- OpenAlex
- W2056510498
- Cited by
- 204
- References
- 17
- Citations by year
- 2026: 7 · 2025: 12 · 2024: 8 · 2023: 11 · 2022: 10 · 2021: 11 · 2020: 12 · 2019: 22 · 2018: 9 · 2017: 9 · 2016: 20 · 2015: 11 · 2014: 10 · 2013: 10 · 2012: 14
- FWCI
- 7.10
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Biology Letters (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Bristol Research (University of Bristol) (submittedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Fossil Insects in Amber
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
- Keywords
- fossil feathers, feather colour, melanosomes, eumelanin, Crato Formation, Lower Cretaceous, theropod dinosaurs, feather-degrading bacteria, extinct birds
- MeSH terms
- Animals, Birds, Color, Feathers, Fossils, Melanins, Melanosomes, Dinosaurs
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