Osteichnidae Höpner et Bertling, 2017

Diagnosis: Originally defned as ‘non-branched borings in bone substrates irrespective of their orientation’, here revised to: cylindrical borings with fused U-loops.

Ethological category: Domichnia (dwelling traces).

Remarks: This new ichnofamily is established in accordance with ICZN (1999, Art. 10.3) with Osteichnus as its type ichnogenus. It comprises all non-branched borings in bone substrates irrespective of their orientation, i.e., it does not include traces of biting or other types of bioerosion.