Linckichnus terebrans Schlirf , 2006

Diagnosis: Smooth, test-tube shaped, unbranched, slightly kink-bent, cylindrical structures, with circular openings and hemispherical terminations, dominantly perpendicular to the grain of the woody substrate and parallel to each other. Fill massive.

Description: Smooth, unbranched, slightly kink-bent, cylindrical borings, with circular openings and hemispherical terminations. Preserved as full relief in a completely weathered sphenophyte stem fragment. Orientation perpendicular to oblique to the grain of the woody substrate. Length: 4–16 mm; width: 2–4 mm.