Ichnofossils

Oichnus simplex Bromley, 1981

Taxon description

Pokorný & Štofik, 2017

Emended diagnosis: Sedilichnus having a simple cylindrical or subcylindrical form, axis more or less perpendicular to the substrate surface. The distal ends of the pits terminate within the substrate; those of the partially penetrating holes are flat or slightly concave (after Bromley, 1981).

Blissett & Pickerill, 2007

Diagnosis – (After Bromley, 1981, p. 60.) “Circular to subcircular holes of biogenic origin bored into hard substrates. The holes may pass right through the substrate as a penetration, where the substrate is a thin shell; or end within the substrate as a shallow to deep depression or short, subcylindrical pit.”
Description – Circular to oval, vertically oriented borings. The majority of these borings do not totally penetrate the substrate. Diameters vary between 70-350 μm.

Donovan & Jagt, 2003

Diagnosis: Oichnus having a simple cylindrical or subcylin-drical form, axis more or less perpendicular to the substrate sur-face. Where the substrate is not fully penetrated, the distal end is flattened hemispherically (after Bromley, 1981, p. 60),

Bromley, 1981a

Diagnosis: Oichnus having a simple cylindrical or subcylindrical form, axis more or less perpendicular to the substrate surface. Where the substrate is not penetrated right through, the distal end is flattened hemispherical.

Type specimen data
: Geological Museum, University of Copenhagen MGUH 15 35 1 , , ()
Synonymy list
1981     Oichnus simplex ichnosp. nov. — Bromley, pp. 60, fig. 2:4,5
2001     Oichnus simplex Bromley, 1981 — Nielsen & Nielsen, pp. 103, fig. 1A-B, 5
2004     Oichnus simplex Bromley, 1981 — Blissett & Pickerill, pp. 183, fig. 7/6
2005     Oichnus simplex Bromley, 1981 — Cosma & Baumiller, pp. 136, fig. 1
2006     Oichnus simplex Bromley, 1981 — Ruggiero et al., pp. 181, fig. Figs. 12, 14–17
2015     Oichnus simplex Bromley, 1981 — Wisshak et al., fig. 1E,F
2017     Sedilichnus simplex (Bromley, 1981) — Pokorný & Štofik, pp. 5, fig. 3c-e; 3F-J; 4A-B: 5A-B
2019     Oichnus simplex Bromley, 1981 — Donovan & Portell, fig. Fig. 1f
Selection of related publications
Bromley, R. G. 1981. Concepts in ichnology illustrated by small round holes in shells. Acta Geologica Hispanica 16, 1-2, 55-64.
References based on distribution