S. L. Zonstein (2004). The spider chelicerae: some problems of origin and evolution D. V. Logunov & D. Penney (Ed.). "European Arachnology 2003"(PDF). Arthropoda Selecta, Special Issue no. 1. ss. 349-366. 4 Nisan 2012 tarihinde kaynağından(PDF) arşivlendi21 Haziran 2012.
S. L. Zonstein (2004). The spider chelicerae: some problems of origin and evolution D. V. Logunov & D. Penney (Ed.). "European Arachnology 2003"(PDF). Arthropoda Selecta, Special Issue no. 1. ss. 349-366. 4 Nisan 2012 tarihinde kaynağından(PDF) arşivlendi21 Haziran 2012.