Contents -- Introduction -- "Orsten"-type fossils -- History of phosphatocopine research -- Prior assumptions on the systematics of Phosphatocopina -- Soft parts and new perspectives about the phylogeny -- Scope and aims -- Material and methods -- Material -- General information -- Statistical data -- Stratigraphy -- Methods -- Isolation of specimens (not done for this work) -- Preparation for SEM -- Measurements -- Terminology -- Systematics -- Crustacea BrOnnich, 1772 -- Phylogenetic analysis -- Results -- Hesslandona MUller, 1964 -- Hesslandona abdominalis Hinz-Schallreuter, 1998 -- Hesslandona reichi Hinz-Schallreuter, 1993 -- Hesslandona unisulcata Muller, 1982 -- Hesslandona necopina MUller, 1964 -- Hesslandona kinnekullensis MUller, 1964 -- Hesslandona trituberculata (Lochman & Hu, 1960) Rushton, 1978 -- Hesslandona ventrospinata GrUndel in GrUndel & Buchholz, 1981 -- Hesslandona suecica n. sp. -- Hesslandona angustata n. sp. -- Hesslandona curvispina n. sp. -- Hesslandona toreborgensis n. sp. -- Trapezilites Hinz-Schallreuter, 1993 -- Trapezilites minimus (Kummerow, 1931) Hinz-Schallreuter, 1993 -- Waldoria Griindel in GrUndel & Buchholz, 1981 -- Waldoria rotundata Griindel in Griindel & Buchholz, 1981 -- Veldotron Grundel in Grundel & Buchholz, 1981 -- Veldotron bratteforsa (Muller, 1964) Hinz-Schallreuter, 1993 -- Falites MUller, 1964 -- Falites fala Muller, 1964 -- Vestrogothia MUller, 1964 -- Vestrogothia spinata MUller, 1964 -- Discussion -- Comparative morphology -- Phylogenetic analysis of Phosphatocopina -- General remarks -- Reconstructed phylogeny of Phosphatocopina -- Phosphatocopina ("Phosphatocopida sp." +Euphosphatocopina new name -- "Phosphatocopida sp." -- Euphosphatocopina new taxon -- Vestrogothia spinata -- NNI (Falites fala + Hesslandonina) -- Falites fala -- Hesslandonina (Cyclotronidae + Hesslandonidae).

Cyclotronidae (Veldotron bratteforsa + Cyclotron lapworthi) -- Veldotron bratteforsa -- Cyclotron lapworthi -- Waldoria rotundata -- Hesslandonidae (Trapezilites minimus + Hesslandona) -- Trapezilites minimus -- Hesslandona -- Hesslandona unisulcata -- Dorsospinata new taxon -- NN3 (Hesslandona kinnekullensis + NN4) -- Hesslandona kinnekullensis -- NN4 (Hesslandona toreborgensis n. sp., H. angustata n. sp. + H. suecica n. sp.) -- Hesslandona toreborgensis n. sp. -- Hesslandona suecica n. sp. -- Hesslandona angustata n. sp. -- NN5 (Hesslandona ventrospinata + NN6) -- Hesslandona ventrospinata -- NN6 (Hesslandona trituberculata + NN7) -- Hesslandona trituberculata -- NN7 (Hesslandona necopina + Hesslandona curvispina) -- Hesslandona necopina -- Hesslandona curvispina n. sp. -- Consequences of the proposed phylogeny of Phosphatocopina -- Crustacean phylogeny -- Ground pattern of Crustacea -- The ground pattern of Labrophora Siveter, Waloszek & Williams, 2003 -- Ground pattern of Phosphatocopina -- Ground pattern of Eucrustacea -- Conclusions -- Future investigations and prospects -- Acknowledgements -- References -- Appendix A - Data for the phylogenetic analysis -- PAUP settings -- List of all coded characters -- Character matrix -- Appendix B- Synonymy of Phosphatocopine taxa -- Possible Phosphatocopine taxa -- Possible Phosphatocopines, described in open nomenclature.