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Egg pigmentation probably has an early Archosaurian origin

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Matters Arising to this article was published on 19 June 2019

The Original Article was published on 31 October 2018

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Fig. 1: Maximum likelihood ancestral reconstruction tree showing probabilities of pigment deposition (green sections of nodes) in eggs of archosaurs.

Data availability

All data were taken from Fig. 1 of Wiemann et al.2 with the exception of the data point on Siamese crocodiles, which was based on data from Mikšík et al.10.

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Acknowledgements

We acknowledge support from FWO grant G007117N and AFOSR grant FA9550-1-18-0447.

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M.D.S. and L.D. conceived the study, L.D. analysed the data, M.D.S. wrote the manuscript, and both authors edited the manuscript.

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Correspondence to Matthew D. Shawkey.

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The authors declare no competing interests.

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Extended data figures and tables

Extended Data Fig. 1 Figure 1 from Wiemann et al.2, with red lines indicating location of wavenumbers analysed using Raman imaging.

Both white and coloured eggs have peaks at 1,166 cm−1, and coloured eggs have valleys at 1,350 cm−1.

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Shawkey, M.D., D’Alba, L. Egg pigmentation probably has an early Archosaurian origin. Nature 570, E43–E45 (2019). https://doi.org/10.1038/s41586-019-1282-4

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