Valve outlines of Recent and fossil species of Pseudolimnocythere A P. Pseudolimnocythere abdita sp. nov. B P. sofiae sp. nov. C P. hypogaea (from Klie 1938) D P. hypogaea (from Karanovic and Pesce 2001) E P. sp. (from Peterson et al. 2013) F P. hartmanni (from Danielopol 1979) G P. sp. (from Danielopol 1980) H P. sp. (from Montanari et al. 2021) I P. sp. sensu Schornikov 2013 (from Schornikov et al. 2014) J P. hainburgensis (from Danielopol et al. 1991) K P. hainburgensis (from Gross and Piller 2006). Scale bar: 100 μm (in case of intraspecific variability in valve size, the maximum value is considered).