Osspecus arboreum Jamison-Todd, Witts, Jones, Tangunan, Chandler, Bown etTwitchett, 2025

Diagnosis: Boring with chamber diameters ranging from 1.1–2.3mm and total depths 1.4–2.6mm. Aperture is fine and straight, with the threadlike aperture neck leading to a chamber that sits at mid-depth beneath the surface of the bone. Chambers have a wide arc and a globular, regular appearance, with symmetry radiating from the upper chamber. Branches are very short and rounded, merging with and almost indistinct from the main chamber body

Diagnosis. Boring with chamber diameters ranging from 1.1–2.3mm and total depths 1.4–2.6mm. Aperture is fine and straight, with the threadlike aperture neck leading to a chamber that sits at mid-depth beneath the surface of the bone. Chambers have a wide arc and a globular, regular appearance, with symmetry radiating from the upper chamber. Branches are very short and rounded, merging with and almost indistinct from the main chamber body.