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dc.contributor.authorBalthasar, Uen
dc.contributor.authorJin, Jen
dc.contributor.authorHints, Len
dc.contributor.authorCusack, Men
dc.date.accessioned2019-07-16T11:23:37Z
dc.identifier.issn0031-0239en
dc.identifier.urihttp://hdl.handle.net/10026.1/14647
dc.description.abstract

While it is well established that the shapes and sizes of shells are strongly phylogenetically controlled, little is known about the phylogenetic constraints on shell thickness. Yet, shell thickness is likely to be sensitive to environmental fluctuations and has the potential to illuminate environmental perturbations through deep time. Here we systematically quantify the thickness of the anterior brachiopod shell which protects the filtration chamber and is thus considered functionally homologous across higher taxa of brachiopods. Our data comes from 66 genera and ten different orders and shows well-defined upper and lower boundaries of anterior shell thickness. For Ordovician and Silurian brachiopods we find significant order-level differences and a trend of increasing shell thickness with water depth. Modern (Cenozoic) brachiopods, by comparison, fall into the lower half of observed shell thicknesses. Among Ordovician – Silurian brachiopods, older stocks commonly have thicker shells, and thick-shelled taxa contributed more prominently to the Great Ordovician Biodiversification, but suffered more severely during the Late Ordovician Mass Extinction. Our data point at a significant reduction in maximum and minimum shell thickness following the Late Ordovician mass extinction. This points towards stronger selection pressure for energy-efficient shell secretion during times of crisis.

en
dc.language.isoenen
dc.publisherWileyen
dc.rightsAttribution-NoDerivatives 4.0 Internationalen
dc.rightsAttribution-NoDerivatives 4.0 Internationalen
dc.rightsAttribution-NoDerivatives 4.0 Internationalen
dc.rightsAttribution-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/en
dc.subjectOrdovicianen
dc.subjectSilurianen
dc.subjectmass extinctionen
dc.subjectGreat Ordovician Biodiversification Eventen
dc.subjectbrachiopodsen
dc.subjectshell thicknessen
dc.titleBrachiopod Shell Thickness links Environment and Evolutionen
dc.typeJournal Article
plymouth.journalPalaeontologyen
dc.identifier.doi10.5061/dryad.k47mn07en
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Geography, Earth and Environmental Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dcterms.dateAccepted2019-06-28en
dc.rights.embargodate2020-10-14en
dc.rights.embargoperiodNot knownen
rioxxterms.versionofrecord10.5061/dryad.k47mn07en
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by-nd/4.0/en
rioxxterms.typeJournal Article/Reviewen


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