Project 3234: M. J. Hopkins. 2019. Phylogenetic analysis and revision of the trilobite subfamily Balnibarbiinae (Olenidae). American Museum Novitates. 3928:1-20.
Specimen: † Cloacaspis tesselata (AMNH/FI:115819)
View: dorsal view of cranidium

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.


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Article DOI: 10.1206/3928.1

Project DOI: 10.7934/P3234, http://dx.doi.org/10.7934/P3234
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 13 Taxa
  • 1 Specimen
  • 45 Characters
Total size of project's media files: 411.8k

Download Project SDD File
Total scored cells: 488
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 45
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 109
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:41/4
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MorphoBank Project 3234

    Authors' Institutions

    • American Museum of Natural History



    Members

    member name taxa specimens media chars character
    comms
       
    notes  media
    labels
    cell scorings
    (scored, NPA, "-")
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    notes  medialabels
    rules
    Melanie Hopkins
    Project Administrator
    13114501600488
    (485, 0, 3)
    072000


    Taxonomic Overview for Matrix 'M25576' (13 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
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    NPA
    cells
    "-" cellscell images labels on
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    [1] † Parabolinella prolata
    Last Modified in 09/10/19
    13292503001
    [2] † Parabolinella tumifrons
    Last Modified in 09/10/19
    14312800001
    [3] † Cloacaspis senilis
    Last Modified in 09/10/19
    1443300001
    [4] † Cloacaspis tesselata
    Last Modified in 09/10/19
    4413600001
    [5] † Cloacaspis ekphymosa
    Last Modified in 09/10/19
    11342800001
    [6] † Cloacaspis dejecta
    Last Modified in 09/10/19
    6393100001
    [7] † Balnibarbi ceryx ceryx
    Last Modified in 09/10/19
    2433900001
    [8] † Balnibarbi ceryx anataphra
    Last Modified in 09/10/19
    12332900001
    [9] † Balnibarbi pulvurea
    Last Modified in 09/10/19
    1443600001
    [10] † Balnibarbi tholia
    Last Modified in 09/10/19
    12332800001
    [11] † Balnibarni erugata
    Last Modified in 09/10/19
    3423800001
    [12] † Balnibarbi sombrero
    Last Modified in 09/10/19
    15302700001
    [13] † Balnibarbi scimitar
    Last Modified in 09/10/19
    3423600001


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