Artykuł w czasopiśmie
Brak miniatury
Licencja
ClosedAccessDostęp zamknięty
 

Chamber arrangement versus wall structure in the high-rank phylogenetic classification of Foraminifera

Uproszczony widok
dc.abstract.enForaminiferal wall micro/ultra-structures of Recent and well-preserved Jurassic (Bathonian) foraminifers of distinct foraminiferal high-rank taxonomic groups, Globothalamea (Rotaliida, Robertinida, and Textulariida), Miliolida, Spirillinata and Lagenata, are presented. Both calcite-cemented agglutinated and entirely calcareous foraminiferal walls have been investigated. Original test ultra-structures of Jurassic foraminifers are given for the first time. “Monocrystalline” wall-type which characterizes the class Spirillinata is documented in high resolution imaging. Globothalamea, Lagenata, porcelaneous representatives of Tubothalamea and Spirillinata display four different major types of wall-structure which may be related to distinct calcification processes. It confirms that these distinct molecular groups evolved separately, probably from single-chambered monothalamids, and independently developed unique wall types. Studied Jurassic simple bilocular taxa, characterized by undivided spiralling or irregular tubes, are composed of miliolid-type needle-shaped crystallites. In turn, spirillinid “monocrystalline” test structure has only been recorded within more complex, multilocular taxa possessing secondary subdivided chambers: Jurassic Paalzowella and Recent Patellina. More integrated molecular and structural studies are needed in order to better understand taxonomic position and phylogeny of tubular taxa. Unilocular and multichambered Lagenata (Lagenidae and Nodosariidae, respectively) show identical test micro and ultra-structure which suggests their close phylogenetic relationship and questions most recent theories of their separate evolutionary history and origins. A comparison of Recent, Cretaceous, and Jurassic foraminiferal test structure indicates that test characteristics at particular higher-rank taxonomic levels change very little over time and thus can serve as good proxies for the taxonomic designations of fossil taxa, when their state of preservation is appropriate for microstructural observations.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorDubicka, Zofia
dc.date.accessioned2024-01-24T19:05:41Z
dc.date.available2024-01-24T19:05:41Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.number1
dc.description.volume64
dc.identifier.doi10.4202/APP.00564.2018
dc.identifier.issn0567-7920
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/102850
dc.identifier.weblinkhttp://www.app.pan.pl/archive/published/app64/app005642018.pdf
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofActa Palaeontologica Polonica
dc.relation.pages1-18
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enForaminifera
dc.subject.enbiomineralisation
dc.subject.entest structure
dc.subject.enhigh-rank classification
dc.subject.enJurassic
dc.subject.enPoland
dc.titleChamber arrangement versus wall structure in the high-rank phylogenetic classification of Foraminifera
dc.typeJournalArticle
dspace.entity.typePublication