Rare well preserved spinose raptorial appendages of fossil radiodont Aegirocassis benmoulai (Van Roy, Daley, & Briggs, 2015). Specimen is glued. Aegirocassis was the largest known radiodont arthropod belonging to the family Hurdiidae, measuring 2 metres in length. This genus was most likely a filter feeder, but it could have preyed upon larger food. The appendages were adapted for suspension feeding, collecting plankton from the water column. Age: Lower Ordovician, Arenig, Fezouata Shale Locality: Morocco, Zagora area Matrix size: 220 x 118 x 23 mm Fossil size: 150 x 33 mm Weight: 432 g If you have bought several items, combined shipping is possible. Please contact me.