Nihilichnus covichi Rasser, Vallon et Salvador, 2016
Synonymy
Type specimens
Descriptions and remarks
Diagnosis: Solitary to rarely paired Nihilichnus with mainly ellipsoidal to sometimes circular outline. The hole margin is straight and perpendicular to the inner and outer surfaces. Very few small scratches may be present on the shell surface in close vicinity to the holes.
Emended diagnosis: Solitary to rarely paired holes or external pits, with mainly elliptical to sometimes circular outline, in invertebrate shell. The hole margin is straight and perpendicular to the inner and outer surfaces. Very few small scratches may be present on the shell surface in close vicinity to the holes.
Occurrences
Browse Categories of Architectural Design (CADs):
Borings with elliptical to sub-rectangular cross sections | Branched tubular borings | Camerate boxwork borings | Camerate network borings | Circular holes and pit-shaped borings | Clavate-shaped borings | Cylindrical vertical to oblique borings | Dendritic and rosetted borings | Elongate or branched attachment bioerosion traces | Fracture-shaped bioerosion traces | Globular to spherical borings | Groove bioerosion traces | Multiple attachment bioerosion traces | Non-camerate boxwork borings | Non-camerate network borings | Pouch borings | Radial borings | Single circular to tear-shaped attachment bioerosion traces | Spiral borings | Trackways and scratch imprints | U-shaped borings | Winding borings |