Fig 6 in New species of Kuqaia from the Lower Jurassic of Sweden indicates a possible water flea (Crustacea: Branchiopoda) affinity

Fig 6. Scanning electron micrographs of Kuqaia species from the Pliensbachian of Skåne. Kuqaia quadrata Li, 1993; (a) one broken specimen (NRM X12704) showing intersecting concentric and more prominent radial ridges, (b) Collar-shaped postventral margin, and (c) enlargement of chequered ornament on the dorsal part; (d) lateral view of specimen (NRM X12705) showing typical intersecting concentric and radial ornament of equal prominence. All from Kävlinge BH-928 core depth 42.25–41.15 m. Scale bars = 100 μm, unless otherwise stated. https://doi.org/10.1371/journal.pone.0282247.g006