Figure 1 in Phylogenetic analyses suggest that Psammomitra (Ciliophora, Urostylida) should represent an urostylid family, based on small subunit rRNA and alpha-tubulin gene sequence information

Figure 1. Morphology and infraciliature of Psammomitra retractilis (F–J, from Song & Warren, 1996). A, B, F, individuals in extended states to show the typical body shapes. Arrowheads in (A) mark the long, dominant membranelles. C, lateral view of a contracted specimen. D, posterior part, to demonstrate the long dorsal cilia. E, anterior part. Arrowheads indicate the long membranelles, whereas arrows mark the dorsal cilia. G, H, dorsal and lateral views of contracted cells. I, J, ventral and dorsal views to show the infraciliature and macronuclear nodules. Scale bars: A, C, D, F = 40 Mm; E = 30 Mm.