1. Sprung L (2001) Wundt, Wilhelm Maximilian (1832–1920). In: Smelser NJ, Baltes PB (eds) International encyclopedia of the social & behavioral sciences. Pergamon Press (Elsevier), NY, USA
2. Koertge N (ed) (2007) New dictionary of scientific biography, 1st edn. Charles Scribners and Sons, Detroit, Michigan
3. Bourgoin SM (2012) Encyclopedia of world biography, 2nd edn. Gale Research, Detroit, Michigan
4. Vannier J, Liu J, Lerosey-Aubril R, Vinther J, Daley AC (2014) Sophisticated digestive systems in early arthropods. Nat Comm 5:3641
5. Maloof AC, Porter SM, Moore JL, Dudas FO, Bowring SA, Higgins JA, Fike DA, Eddy MP (2010) The earliest Cambrian record of animals and ocean geochemical change. Geol Soc Am Bull 122(11–12):1731–1774