WalliseropsDevonianFoum Zguid, MoroccoThe unique trident-shaped appendage of Walliserops makes it one of the more bizarre-looking of the spiny trilobites of Morocco. The appendage's use is a mystery to science, though researchers have hypothesized that it was used for foraging in the soft ocean sand. Trident trilobite genera display both long and short appendages. Walliserops, a 375-million-year-old genus, exhibits the short-forked version. In the present richly toned black specimen, the trident and three cephalic spines were prepared free of matrix. Specimen measuring 2 1/2 in; Matrix measuring 2 1/2 x 2 in