About the Authors

Magnus Ivarsson

Magnus.ivarsson@nrm.se

Affiliation Department of Palaeobiology and Nordic Center for Earth Evolution, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden

Stefan Bengtson

Affiliation Department of Palaeobiology and Nordic Center for Earth Evolution, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden

Henrik Skogby

Affiliation Department of Geosciences, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden

Peter Lazor

Affiliation Department of Earth Sciences, Uppsala University, Villavägen 16, SE-752 36 Uppsala, Sweden

Curt Broman

Affiliation Department of Geological Sciences, Stockholm University, Svante Arrheniusväg 8, SE-106 91, Stockholm, Sweden

Veneta Belivanova

Affiliation Department of Palaeobiology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden

Federica Marone

Affiliation Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MI SB. Performed the experiments: MI SB HS PL CB VB FM. Analyzed the data: MI SB HS PL CB VB FM. Wrote the paper: MI SB HS PL CB.