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dc.contributor.creatorMacGabhann, Breandán Anraoi
dc.contributor.creatorMurray, John
dc.date.accessioned2018-11-20T14:53:26Z
dc.date.available2018-11-20T14:53:26Z
dc.date.issued2010
dc.identifier.citationMacGabhann, B.A., Murray, J. (2010) 'Non-mineralised discoidal fossils from the Ordovician Bardahessiagh formation, Co. Tyrone, Ireland.' Irish Journal of Earth Sciences 28. pp. 1-12. DOI: 10.3318/IJES.2010.28.1.en_US
dc.identifier.urihttp://hdl.handle.net/10395/2407
dc.descriptionNon-mineralised discoidal fossils from the Ordovician Bardahessiagh formation, Co. Tyrone, Irelanden_US
dc.description.abstractFour non-mineralised fossils from the Ordovician Bardahessiagh Formation, near Pomeroy, Co. Tyrone, have been examined for the first time following their recovery from a temporary trench dug in 1992, and are here described as Seputus pomeroii gen. et sp. nov. These are discoidal impressions with up to 120 radial ridges extending from a central ring to a sharply defined margin, and they are tentatively interpreted as rotadiscid eldonids. The fossils are preserved as moulds and casts in a medium-grained quartzose sandstone bed, which is densely packed with corals, trilobites, brachiopods and delicately preserved echinoderms, probably representing an event bed on an outer shelf or upper slope setting. The non-mineralised fossils are likely to represent a para autochthonous assemblage of benthic organisms, preserved by early diagenic mineralisation in anaerobic conditions produced by the decay of organic matter entrained within the bed, a mode of preservation broadly similar to that of non-mineralised fossils from the Ediacaran System. The preserved discs are believed to represent a tough exterior more resistant to decay than the (unknown) remainder of the organism.en_US
dc.language.isoengen_US
dc.publisherRoyal Irish Academyen_US
dc.relation.ispartofseries28;
dc.rights.urihttps://www.jstor.org/stable/25780702en_US
dc.subjectNon-mineraliseden_US
dc.subjectDiscoidalen_US
dc.subjectFossilsen_US
dc.subjectOrdovician Bardahessiagh formationen_US
dc.subjectCo. Tyroneen_US
dc.subjectIrelanden_US
dc.titleNon-mineralised discoidal fossils from the Ordovician Bardahessiagh formation, Co. Tyrone, Irelanden_US
dc.typeArticleen_US
dc.type.supercollectionall_mic_researchen_US
dc.type.supercollectionmic_published_revieweden_US
dc.description.versionYesen_US
dc.identifier.doi10.3318/IJES.2010.28.1


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