Euproops

Euproops Meek and Worthen, 1868, is an extinct genus of xiphosuran, related to the modern horseshoe crab. It lived during the Carboniferous Period.
The "Treatise on Invertebrate Paleontology" describes "Euproopidae" as "small forms with wedge-shaped cardiac lobe bordered by distinct axial furrows, abdominal shield with annulated axis bearing a high boss on last segment." The same source describes "Euproops" as follows. "Prosoma with flat genal spines and carinate opthamalic spines; cardiopthamalic region with or without intercardiopthamalic area; abdomen with raised pleural ridges that cross flattened rim and are prolonged as marginal spines; annulated axis with knob on 1st and 3rd segments and elevated boss or short spine on hindmost segment; telson long."
Type species.
"Bellinurus danae" Meek & Worthen, 1865. = "Euproops kilmersdonensis" Ambrose & Romano, 1972 according to Anderson (1994)