Reply to: Triassic sauropodomorph eggshell might not be soft

Mark A Norell¹, Jasmina Wiemann^{2

3}, Iris Menéndez^{4

5}, Matteo Fabbri^{6

7}, Congyu Yu¹, Claudia A Marsicano⁸, Anita Moore-Nall⁹, David J Varricchio⁹, Diego Pol¹⁰, Darla K Zelenitsky¹¹

Affiliations

¹ Division of Paleontology, American Museum of Natural History, New York, NY, USA.
² Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA. jwiemann@caltech.edu.
³ Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA. jwiemann@caltech.edu.
⁴ Departamento de Geodinámica, Estratigrafía y Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain. irismene@ucm.es.
⁵ Departamento de Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain. irismene@ucm.es.
⁶ Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA. mfabbri@fieldmuseum.org.
⁷ Negaunee Integrative Research Centre, Field Museum of Natural History, Chicago, IL, USA. mfabbri@fieldmuseum.org.
⁸ Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Buenos Aires, Argentina.
⁹ Earth Sciences, Montana State University, Bozeman, MT, USA.
¹⁰ CONICET, Museo Paleontológico Egidio Feruglio, Trelew, Argentina.
¹¹ Department of Geoscience, University of Calgary, Calgary, Alberta, Canada.

Comment

Mark A Norell et al. Nature. 2022 Oct.

. 2022 Oct;610(7932):E11-E14.

doi: 10.1038/s41586-022-05152-8.

¹ Division of Paleontology, American Museum of Natural History, New York, NY, USA.
² Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA. jwiemann@caltech.edu.
³ Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA. jwiemann@caltech.edu.
⁴ Departamento de Geodinámica, Estratigrafía y Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain. irismene@ucm.es.
⁵ Departamento de Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain. irismene@ucm.es.
⁶ Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA. mfabbri@fieldmuseum.org.
⁷ Negaunee Integrative Research Centre, Field Museum of Natural History, Chicago, IL, USA. mfabbri@fieldmuseum.org.
⁸ Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Buenos Aires, Argentina.
⁹ Earth Sciences, Montana State University, Bozeman, MT, USA.
¹⁰ CONICET, Museo Paleontológico Egidio Feruglio, Trelew, Argentina.
¹¹ Department of Geoscience, University of Calgary, Calgary, Alberta, Canada.

No abstract available

Comment on

Triassic sauropodomorph eggshell might not be soft.
Choi S, Yang TR, Moreno-Azanza M, Zhang S, Kim NH. Choi S, et al. Nature. 2022 Oct;610(7932):E8-E10. doi: 10.1038/s41586-022-05151-9. Epub 2022 Oct 19. Nature. 2022. PMID: 36261569 No abstract available.

1. Choi, S., Yang, T.-R., Moreno-Azanza, M., Zhang, S. & Kim, N.-H. Triassic sauropodomorph eggshell might not be soft. Nature https://doi.org/10.1038/s41586-022-05151-9 (2022).
1. Norell, M. A. et al. The first dinosaur egg was soft. Nature 583, 406–410 (2020). - DOI
1. Buseck, P. R. & Beyssac, O. From organic matter to graphite: graphitization. Elements 10, 421–426 (2014). - DOI
1. Choi, S., Lee, S. K., Kim, N. H., Kim, S. & Lee, Y. N. Raman spectroscopy detects amorphous carbon in an enigmatic egg from the Upper Cretaceous Wido Volcanics of South Korea. Front. Earth Sci. 7, 349 (2020). - DOI
1. Chave, K. E. Carbonates: association with organic matter in surface seawater. Science 148, 1723–1724 (1965). - DOI