Taphonomy And Biological Affinity Of Three-Dimensionally Phosphatized Bromalites From The Middle Ordovician Winneshiek Lagerstätte, Northeastern Iowa, USA

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dc.contributor.authorHawkins, Andrew D.en
dc.contributor.authorLiu, Huaibao P.en
dc.contributor.authorBriggs, Derek E. G.en
dc.contributor.authorMuscente, A. D.en
dc.contributor.authorMcKay, Robert M.en
dc.contributor.authorWitzke, Brian J.en
dc.contributor.authorXiao, Shuhaien
dc.contributor.departmentGeosciencesen
dc.date.accessioned2019-01-21T23:50:16Zen
dc.date.available2019-01-21T23:50:16Zen
dc.date.issued2018-01-09en
dc.date.updated2019-01-21T23:50:13Zen
dc.description.abstractThe Winneshiek Lagerst¨atte occurs within an Ordovician meteorite impact structure beneath part of the city of Decorah, Iowa. The Lagerst¨atte has yielded an atypical marine fauna including phyllocarid crustaceans, eurypterids, conodonts, linguloid brachiopods, and jawless fish. Associated with these taxa are vermiform fossils: elongate, morphologically variable, and often three-dimensionally preserved bromalites of uncertain organisms. The preservational state of these bromalites is significantly different from that of other components of the Winneshiek biota. Here we present a compositional and microstructural analysis of the vermiform fossils in order to elucidate their taphonomy and biological affinities. The majority of studied specimens are preserved three-dimensionally and composed of calcium phosphate, while a minority are preserved as carbonaceous compressions. Winneshiek bromalites exhibit important similarities to examples documented from both older and younger sediments. They provide independent evidence of predation in the Winneshiek assemblage during the Great Ordovician Biodiversification Event.en
dc.description.versionPublished versionen
dc.format.extentPages 1-15en
dc.identifier.doihttps://doi.org/10.2110/palo.2017.053en
dc.identifier.issn0883-1351en
dc.identifier.issue1en
dc.identifier.orcidXiao, Shuhai [0000-0003-4655-2663]en
dc.identifier.urihttp://hdl.handle.net/10919/86821en
dc.identifier.volume33en
dc.language.isoenen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject0403 Geologyen
dc.subject0602 Ecologyen
dc.subject0603 Evolutionary Biologyen
dc.subjectPaleontologyen
dc.titleTaphonomy And Biological Affinity Of Three-Dimensionally Phosphatized Bromalites From The Middle Ordovician Winneshiek Lagerstätte, Northeastern Iowa, USAen
dc.title.serialPalaiosen
dc.typeArticle - Refereeden
pubs.organisational-group/Virginia Tech/Scienceen
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Science/Geosciencesen
pubs.organisational-group/Virginia Tech/Science/COS T&R Facultyen

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