Ordovician conulariids (Scyphozoa) from the Upper Tiouririne Formation (Katian), eastern Anti-Atlas Mountains, southern Morocco

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dc.contributor.authorVan Iten, Heyo
dc.contributor.authorGutiérrez-Marco, Juan Carlos
dc.contributor.authorMuir, Lucy A.
dc.contributor.authorSimões, Marcello G. [UNESP]
dc.contributor.authorLeme, Juliana M.
dc.contributor.institutionHanover College
dc.contributor.institutionCincinnati Museum Center
dc.contributor.institutionFacultad de Ciencias Geológicas
dc.contributor.institutionAmgueddfa Cymru – National Museum of Wales
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2023-03-01T20:34:00Z
dc.date.available2023-03-01T20:34:00Z
dc.date.issued2022-01-01
dc.description.abstractStorm-dominated siliciclastic shelf deposits in the upper half of the Upper Tiouririne Formation (Upper Ordovician, upper Berounian–c. Katian 1–2) of southern Morocco contain large specimens of at least two species of Archaeoconularia (A. aff. consobrina and A. cf. imperialis). Pseudoconularia cf. grandi-ssima occurs in basal beds of the formation, but is far less abundant than Archaeoconularia. The large size of the Archaeoconularia (>500 mm long in some cases) suggests gigantism induced by cold, nutrient-rich waters. Specimens preserving the apical end terminate in a schott, indicating that the conulariids were severed near the apex prior to final burial. Many of the Archaeoconularia occur in monospecific aggregations in which the component specimens exhibit preferential alignment, probably owing to entrainment and burial by storm currents or flows. Some Archaeoconularia are encrusted by edrioasteroids and/or craniid brachiopods, which in certain cases are so closely spaced as to interfere with growth. The edrioasteroids and brachiopods were probably epibionts attached to living, erect or semi-erect conulariids that were partially infaunal. More generally, Late Ordovician conulariid assemblages of South Polar Gondwana and adjacent terranes exhibit low generic diversity relative to those of low-to mid-latitude terranes (Baltica and Laurentia), and are dominated numerically by Archaeoconularia.en
dc.description.affiliationDepartment of Geology Hanover College
dc.description.affiliationDepartment of Invertebrate Paleontology Cincinnati Museum Center, 1301 Western Avenue
dc.description.affiliationInstituto de Geociencias (CSIC UCM) and Departamento de Geodinámica Estratigrafía y Paleontología Facultad de Ciencias Geológicas, José Antonio Novais 12
dc.description.affiliationDepartment of Natural Sciences Amgueddfa Cymru – National Museum of Wales, Cathays Park
dc.description.affiliationDepartment of Zoology São Paulo State University, Rubião Junior District, São Paulo
dc.description.affiliationGeosciences Institute University of São Paulo, R. Lago 562
dc.description.affiliationUnespDepartment of Zoology São Paulo State University, Rubião Junior District, São Paulo
dc.format.extent177-199
dc.identifierhttp://dx.doi.org/10.1144/SP485.5
dc.identifier.citationGeological Society Special Publication, v. 485, n. 1, p. 177-199, 2022.
dc.identifier.doi10.1144/SP485.5
dc.identifier.issn0305-8719
dc.identifier.scopus2-s2.0-85123700552
dc.identifier.urihttp://hdl.handle.net/11449/240815
dc.language.isoeng
dc.relation.ispartofGeological Society Special Publication
dc.sourceScopus
dc.titleOrdovician conulariids (Scyphozoa) from the Upper Tiouririne Formation (Katian), eastern Anti-Atlas Mountains, southern Moroccoen
dc.typeCapítulo de livro
unesp.author.orcid0000-0003-4213-6144[2]

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