| Here is a rare example of a curled harp of the species Eoharpes benignensis from a concretion of the Dobrotivá Formation. The cephalon is about 21 mm wide. | |||
Location: | ¦árka, (at Hamerněk´s Villa) Prag, Czech Republic | ||
| Size nudule: | about 35 x 28 mm | ||
| Age: | Ordovician , Darriwilian, Dobrotivá Formation (About 467 Ma) | ||