Mann et al. (2004) ... in which we present the 383 diatoms measured

Full reference and abstract:

Mann D.G., McDonald S.M., Bayer M.M., Droop S.J.M., Chepurnov V.A., Loke R.E., Ciobanu A. and du Buf J.M.H. (2004) The Sellaphora pupula species complex (Bacillariophyceae): morphometric analysis, ultrastructure and mating data provide evidence for five new species. Phycologia 43: 459-482 Morphometric shape analysis and ultrastructural data are provided for six genodemes of the Sellaphora pupula species complex that have been studied during the last 20 years from Blackford Pond, Edinburgh. The demes have previously been shown to be separated by prezygotic reproductive barriers: cells of different demes do not pair, though they may show residual interactions when sexualized. A new morphometric method, contour segment analysis, which was recently developed for diatoms in relation to automated identification, gives a clear separation of all six genodemes and indicates no heterogeneity within each. Legendre shape analysis gives less separation in this instance. All other available data, including molecular sequence data, also support separation of the six demes at species level. Five new species are therefore described: S. auldreekie, S. blackfordensis, S. capitata, S. lanceolata and S. obesa. The identity of S. pupula sensu stricto is clarified through designation of epitypes.

If you want to download all the pictures and the raw data measured from them (all compressed in a .zip file). Be warned, though, the file is >20Mb (the pictures are in .jpg format, and the data sheets in .xls format). If, instead, you actually want to see some of the data and pictures first, then click one of these links: basic morphometric data (measurements from pictures of valves); legendre coefficients (calculated from valve outlines); contour segment analysis data (calculated from valve outlines); pictures.