Species

Oldhamia antiqua Kinhan, 1858

Taxon description

Seilacher et al., 2005

Emended Diagnosis: Oldhamiain which divergingcurved to straight probings display a palm leaf ar-rangement or resemble rays of fireworks. Successiveprobings are separated by narrow strips of unexploredsedimen.

Lindholm & Casey, 1990

Description. A series of two or more semicircular or stellate fans of radiating burrows that connect via a stemlike burrow. Connecting burrow extends from either a central or lateral position to connect at the base of the succeeding fan. Thus, fans line up in either a zigzag or linear, tandemlike fashion. Length of the connecting burrow is variable but generally at least 2-5 mm longer than other burrows. As a result, individual fans are most commonly separated from other fans and do not overlap. However, in some specimens, connecting burrow is the same length or only slightly longe; than other burrows, resulting in some overlap of successive fans. All burrows in a fan converge to a point at the base that is V- or U-shaped.

Synonymy list

1858 Oldhamia antiqua Forbes, 1849 — Kinhan , pp. 69

1895 Oldhamia (Murchisonites) occidens — Walcott , pp. 314-315 , fig. Fig. 1

1904 Oldhamia (Murchisonites) occidens — Dale , pp. 3 , fig. Fig. 1

1929 Oldhamia occidens — Ruedemann , pp. 47-55 , fig. Fig. 28-29

1942 Oldhamia antiqua Forbes, 1849 — Ruedemann , fig. Figs. 1.2, 1.4, 1.5, 2.1, 2.2, 3.4

1942 Oldhamia smithi — Ruedemann , pp. 10 , fig. Fig. 3.5

1962 Oldhamia smithi — Neuman , fig. Fig. 2

1978 Oldhamia antiqua Kinahan, 1858 — Kowalski , pp. 24 , fig. Plate I:4-7

1990 Oldhamia kernnesraniensis — El Hassani & Willefert , pp. 234 , fig. Fig. 1.1-1.4; 1.7-1.8

1990 Oldhamia flabellata — El Hassani & Willefert , pp. 234 , fig. Fig. 1.5-1.6

1994 Oldhamia antiqua Forbes, 1849 — Hofmann et al. , pp. 775 , fig. Figs. 5G?, 6D, 6F)

1994 Oldhamia cf. antiqua — Buggisch et al. , pp. 22 , fig. Fig.20b

2005 Oldhamia antiqua Kinahan, 1858 — Seilacher et al. , pp. 341 , fig. Fig. 12B, 14, 15

Classification

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