Hyolithid Hyolithes idahoensis? (Resser, 1938)Middle CambrianSpence ShaleBox Elder CountyUtahUSACambrian Hyolitha Hyolithes idahoensis? Spence ShaleSKU: TDI278120,00 €PrezzoEsauritoTechnical data:size: slab 23 cm x 13 cm Positive and Negative Hyolithid 5,5 cm restorations: NO RESTORATIONS preparator: Di Silvestro Gianpaolo ref. Wikipedia : Hyoliths are animals with small conical shells, known as fossils from the Palaeozoic Era. They are lophophorates, a group which includes the brachiopods.