Oldhamia

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Oldhamia
Temporal range: Cambrian Fortunian–Cambrian "Stage 5"
Trace fossil classification
Ichnogenus: Oldhamia
Forbes, 1848
Ichnospecies
  • O. radiata Forbes, 1848
  • O. antiqua Forbes, 1848
  • O. flabellata Aceñolaza et Durand, 1973
  • O. curvata Lindholm et Casey, 1990
  • O. geniculata Seilacher, Buatois et Mangano, 2005
  • O. 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" (Seilacher, Buatois et Mangano, 2005) 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 terefore are nomina nuda.

It was named after the British geologist Thomas Oldham.

References

  1. ↑ 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. doi:10.1016/j.palaeo.2005.06.003. 
  2. ↑ 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. 
  3. ↑ Tacker, R.C.; Martin, A.J., Weaver, P.G., Lawver, D.R. (2010). "Trace fossils versus body fossils: Oldhamia recta revisited". Precambrian Research 178 (1–4): 43–50. doi:10.1016/j.precamres.2010.01.008. 
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