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A new look at Eccaparadoxides (Cambrian, Trilobita) and its biostratigraphic significance

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dc.abstract.enEccaparadoxides is a geographically widely distributed trilobite genus that occurs in the middle part of the Cambrian System. However, the systematically important morphologic characteristics that can be used to differentiate taxa are often problematical in their application. A review of the large number (over 30) of significant species or forms assigned to Eccaparadoxides clearly indicates that only the pygidia offer fairly reliable morphologic criteria that can be used taxonomically and phylogenetically. The pygidia allow for recognition of four different morphological groups (pusillus, lamellatus, pradoanus and asturianus) of which the asturianus group can only be questionably assigned to the genus. Species known only from cranidia cannot be assigned to Eccaparadoxides with certainty. This study refines the biostratigraphy for the interval from the upper Wuliuan to the middle Drumian and shows that this interval brackets the range of most Eccaparadoxides species. The genera or subgenera Baltoparadoxides, Rejkocephalus and Macrocerca are evaluated. Eccaparadoxides zelus, E. epimetheus and Eccaparadoxides? hestia are newly proposed species.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorŻylińska, Anna
dc.contributor.authorLanding, Ed
dc.contributor.authorGeyer, Gerd
dc.date.accessioned2024-01-24T18:04:10Z
dc.date.available2024-01-24T18:04:10Z
dc.date.issued2021
dc.description.financePublikacja bezkosztowa
dc.identifier.doi10.1007/S12542-021-00580-9
dc.identifier.issn0031-0220
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/101718
dc.identifier.weblinkhttps://link.springer.com/content/pdf/10.1007/s12542-021-00580-9.pdf
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofPalaontologische Zeitschrift
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleA new look at Eccaparadoxides (Cambrian, Trilobita) and its biostratigraphic significance
dc.typeJournalArticle
dspace.entity.typePublication