Species
Oldhamia curvata Lindholm et Casey, 1990
Taxon description
Seilacher et al., 2005
Emended Diagnosis: Oldhamiawith thin, uniformlycurved, unbranched probings, commonly forming al-most symmetrical fan structures and leaving a gap inthe center. Probings commonly regularly spaced, maintaining the curvature along their trajectory.Asymmetric forms rare.
Lindholm & Casey, 1990
Diagnosis. Thin, curved, unbranching, unlined burrows that form two opposing fan-shaped traces. Both fans generally of similar size and geometry but not necessarily identical in number of burrows or amount of curvature. All burrows converge at either a central area (Fig. 8D) or connect to a common burrow (Figs. 8F, 8G)
Synonymy list
1965 Oldhamia sp. — Churkin & Brabb , fig. Fig.4
1972 Oldhamia sp. — Mirré & Aceñolaza , pp. 75-76, fig. Fig. ac
1973 Oldhamia radiata — Aceñolaza & Durand , fig. Fig. 1B, E
1978 Oldhamia radiata — Aceñolaza , pp. 28, fig. Fig. 13
1981 Oldhamia radiata — Aceñolaza & Toselli , pp. 51, fig. Fig. 2,3
1982 Oldhamia antiqua — Aceñolaza & Durand , pp. 709, fig. Fig. 8
1984 Oldhamia antiqua — Aceñolaza & Durand , fig. Fig. 1D, 2D
1984 Oldhamia — Aceñolaza & Durand , fig. Fig. 3J
1987 Oldhamia antiqua — Aceñolaza & Durand , fig. Pl. 1 fig. F
1989 Oldhamia antiqua — Lindholm & Casey , pp. 6, fig. Fig. 3C, D
Classification
| Organism group | Biota |
| Ichnofossil group | Ichnofossils |
| Bioturbation trace fossils | |
| Genus | Oldhamia |
| Species | alata |
| antiqua | |
| curvata | |
| flabellata | |
| geniculata | |
| radiata | |
| recta | |
| smithi |