Hallmann, C., Nettersheim, B. J., Brocks, J. J., Schwelm, A., Hope, J. M., Not, F., Lomas, M., Schmidt, C., Schiebel, R., Nowack, E. C. M., De Deckker, P., Pawlowski, J., Bowser, S. S., Bobrovskiy, I., Zonneveld, K., Kucera, M., Stuhr, M. (2020): Reply to: Sources of C30 steroid biomarkers in Neoproterozoic–Cambrian rocks and oils. - Nature Ecology & Evolution, 4, 37-39.https://doi.org/10.1038/s41559-019-1049-1