Oldhamia

Trace fossil

Oldhamia Temporal range: Fortunian–Wuliuan PreꞒ Ꞓ O S D C P T J K Pg N
Trace fossil classification
Ichnogenus:	†Oldhamia Forbes, 1848
Ichnospecies
Oldhamia radiata Forbes, 1848 Oldhamia antiqua Forbes, 1848 Oldhamia flabellata Aceñolaza et Durand, 1973 Oldhamia curvata Lindholm et Casey, 1990 Oldhamia geniculata Seilacher, Buatois et Mangano, 2005 Oldhamia alata Seilacher, Buatois et Mangano, 2005

Oldhamia is an ichnogenus describing burrows produced by worm-like organisms mining underneath microbial mats. It was common from the Early Cambrian deep-water deposits.^[1]^[2]

The Ediacaran species Oldhamia recta are body fossils of a rod-like organism, rather than ichnofossils.^[3]

The Ordovician Oldhamia pinnata and Carboniferous-Permian Oldhamia fimbriata were mentioned without any ichnotaxonomical formalization, and therefore are nomina nuda.

It was named after the geologist Thomas Oldham by Edward Forbes, who first described it in 1848.

References

^ Seilacher, Adolf; Luis A. Buatoisb; M. Gabriela Mángano (2005-10-07). "Trace fossils in the Ediacaran–Cambrian transition: Behavioral diversification, ecological turnover and environmental shift". Palaeogeography, Palaeoclimatology, Palaeoecology. 227 (4): 323–356. Bibcode:2005PPP...227..323S. doi:10.1016/j.palaeo.2005.06.003.
^ Herbosch, A.; Verniers, J. (2011). "What is the biostratigraphic value of the ichnofossil Oldhamia for the Cambrian: a review". Geologica Belgica. 14 (3–4): 229–248.
^ Tacker, R.C.; Martin, A.J.; Weaver, P.G.; Lawver, D.R. (2010). "Trace fossils versus body fossils: Oldhamia recta revisited" (PDF). Precambrian Research. 178 (1–4): 43–50. Bibcode:2010PreR..178...43T. doi:10.1016/j.precamres.2010.01.008. Archived from the original (PDF) on 2013-08-29. Retrieved 2013-06-04.