Oldhamia

{{Short description|Trace fossil}} {{Ichnobox | fossil_range = {{fossil range|Fortunian|Wuliuan|latest=Permian}} | taxon = Oldhamia | authority = Forbes, 1848 | subdivision_ranks = Ichnospecies | subdivision = {{Species list | 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.<ref name=Seilacher2005>{{cite journal | author = Seilacher, Adolf |author2=Luis A. Buatoisb |author3=M. Gabriela Mángano | date = 2005-10-07 | title = Trace fossils in the Ediacaran–Cambrian transition: Behavioral diversification, ecological turnover and environmental shift | journal = Palaeogeography, Palaeoclimatology, Palaeoecology | volume = 227 | issue = 4 | pages = 323–356 | doi = 10.1016/j.palaeo.2005.06.003 | url = https://www.academia.edu/3493306 |bibcode=2005PPP...227..323S }}</ref><ref name=Herbosch2011>{{cite journal | author = Herbosch, A. | author2 = Verniers, J. | title = What is the biostratigraphic value of the ichnofossil ''Oldhamia'' for the Cambrian: a review | journal = Geologica Belgica | year = 2011 | volume = 14 | issue = 3–4 | pages = 229–248 | url = https://popups.uliege.be/1374-8505/index.php?id=3398 }}</ref>

The Ediacaran species ''Oldhamia recta'' are body fossils of a rod-like organism, rather than ichnofossils.<ref name=Tacker2010>{{cite journal | author = Tacker, R.C. | author2 = Martin, A.J. | author3 = Weaver, P.G. | author4 = Lawver, D.R. | title = Trace fossils versus body fossils: ''Oldhamia recta'' revisited | journal = Precambrian Research | year = 2010 | volume = 178 | issue = 1–4 | pages = 43–50 | doi = 10.1016/j.precamres.2010.01.008 | url = http://envs.emory.edu/home/assets/documents/Faculty/martin_docs/tacker_2010.pdf | bibcode = 2010PreR..178...43T | access-date = 2013-06-04 | archive-url = https://web.archive.org/web/20130829035333/http://envs.emory.edu/home/assets/documents/Faculty/martin_docs/tacker_2010.pdf | archive-date = 2013-08-29 | url-status = dead }}</ref>

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.

==See also== *List of Ediacaran genera

==References== {{Reflist}}

Category:Burrow fossils Category:Fortunian