Data availability
All relevant data are shown in Fig. 1. Chlorarachniophytes can be sourced from the Bigelow NCMA culture collection (https://ncma.bigelow.org/cms/index/index/: CCMP 239, 3166 and 2755).
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C.H., B.J.N., I.B. and J.J.B. wrote the reply with input from A.S., J.M.H., F.N., M.L., C.S., R.S., E.C.M.N., P.D.D., J.P., S.S.B., K.Z., M.K. and M.S.
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Hallmann, C., Nettersheim, B.J., Brocks, J.J. et al. Reply to: Sources of C30 steroid biomarkers in Neoproterozoic–Cambrian rocks and oils. Nat Ecol Evol 4, 37–39 (2020). https://doi.org/10.1038/s41559-019-1049-1
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DOI: https://doi.org/10.1038/s41559-019-1049-1
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