Species

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.

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.

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),

Synonyymit
1981     Oichnus simplex ichnosp. nov. — Bromley , pp. 60, fig. 2:4,5
1987     Oichnus simplex Bromley, 1981 — Mayoral , pp. 50, fig. Pl. 1:23, 26-29
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
Aiheeseen liittyvät julkaisut
Bromley, R. G. 1981. Concepts in ichnology illustrated by small round holes in shells. Acta Geologica Hispanica 16, 1-2, 55-64.
Levinneisyys ja viitteet