A new ichthyosaur genus from the Posidonia Shale (Lower Toarcian, Jurassic) of Holzmaden, SW-Germany with comments on the phylogeny of post-Triassic ichthyosaurs. Neues Jahrbuch fuer Geologie und Palaeontologie Abhandlungen, 209(1), Mai 1998: 47-78. 49 [Zoological Record Volume 135]