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Phylogenetic analysis and revision of the trilobite subfamily Balnibarbiinae (Olenidae). (American Museum novitates, no. 3928)

Show simple item record Hopkins, Melanie J. 2019-05-02T19:06:43Z 2019-05-02T19:06:43Z 2019-05-07
dc.description 20 pages : illustrations (some color) ; 26 cm. en_US
dc.description.abstract The Balnibarbiinae is one of eight subfamilies of the Olenidae, a diverse family of late Cambrian to Ordovician trilobites. Balnibarbiine species occur in a relatively continuous section of deeper-water sediments exposed along the northeastern coastline of Spitsbergen, Svalbard, as well as scattered deeper-water beds in central Nevada. Results of phylogenetic analyses of the subfamily using both parsimony and Bayesian methods are consistent with a previous hypothesis based on phyletic similarity and stratigraphic range. Cloacaspis Fortey, 1974, is supported as monophyletic, but the support for Balnibarbi Fortey, 1974, is weak, and the genus may be paraphyletic to Cloacaspis even with the reassignment of Balnibarbi ceryx Fortey, 1974, to Cloacaspis. New field collections and discovery of previously undescribed material in museum and survey collections provides the basis for emended descriptions of the genus Cloacaspis, as well as Cloacaspis tesselata Fortey and Droser, 1999, Cloacaspis ekphymosa Fortey, 1974, and Balnibarbi erugata Fortey, 1974, and expands the geographic range of the subfamily to Alaska. en_US
dc.language.iso en_US en_US
dc.publisher American Museum of Natural History. en_US
dc.relation.ispartofseries American Museum novitates;no.3928.
dc.subject Balnibarbiinae. en_US
dc.subject Phylogeny. en_US
dc.subject Trilobites. en_US
dc.subject Svalbard (Norway) en_US
dc.subject Nevada. en_US
dc.subject Alaska. en_US
dc.title Phylogenetic analysis and revision of the trilobite subfamily Balnibarbiinae (Olenidae). (American Museum novitates, no. 3928) en_US
dc.title.alternative Trilobite subfamily Balnibarbiinae. en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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