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)

Type specimen data

holotype : Geological Survey of Canada, Ottawa 990070 , Lower Cambrian (old nomenclature)

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

1990 Oldhamia curvata n. isp. — Lindholm & Casey , pp. 1276, 1278 , fig. Figs. 8D-8G;

1990 Oldhamia antiqua — Durand & Aceñolaza , pp. 94 , fig. Fig. 3.4-3.5

1993 Oldhamia curvata Lindholm et Casey, 1990 — Sweet & Narbonne , pp. 71 , fig. 3b-d

1993 Oldhamia smithi — Sweet & Narbonne , pp. 71 , fig. Fig. 3a

1993 Oldhamia antigua (lapsus calami) — Durand , fig. Pl, 1. fig. H

1994 Oldhamia curvata Lindholm et Casey, 1990 — Hofmann et al. , pp. 775 , fig. Figs. 31, 4D, 5A-5C, 6A, 6G

1996 Oldhamia antiqua — Durand , fig. Pl. 1 fig. 9C

1996 Oldhamia antiqua — Aceñolaza et al. , fig. Fig. 9C

1996 Oldhamia antiqua — Aceñolaza et al. , fig. pl. 2 fig. 6

2005 Oldhamia curvata Lindholm and Casey, 1990 — Seilacher et al. , pp. 342 , fig. Fig. 16

Classification

Organism group	Biota
Ichnofossil group	Ichnofossils
	Soft-sediment trace fossils
Genus	Oldhamia
Species	alata
	antiqua
	curvata
	flabellata
	geniculata
	radiata
	recta
	smithi