Project 538: S. Turner, C. J. Burrow. 2011. A Lower Carboniferous Xenacanthiform Shark from Australia. Journal of Vertebrate Paleontology. 31 (2):241-257.
Specimen: Reginaselache (QMF:39642)
View: Labiobasal

Abstract

A new Early Carboniferous (Mississippian, mid-Viséan) chondrichthyan, Reginaselache morrisi, n. g., n. sp., from non- or marginal marine sandy mudstones of the Tetrapod Unit of the mid-Viséan (330 Ma = top Holkerian/basal Asbian) Ducabrook Formation, northwest of Springsure, central Queensland, is referred to the order Xenacanthiformes. The taxon is represented by robust diplodont teeth with multicristate cusps, a prominent rounded coronal button, and a horseshoe-shaped labial boss. Rare spine fragments from the type locality, and a partial lower jaw from a site close by are also tentatively referred to the taxon. Reginaselache morrisi was a medium-sized, ca. 1 m long shark with numerous teeth, probably feeding on smaller paleoniscoid and other fishes and/or invertebrates. Analysis of the teeth and comparison with those of other Carboniferous and later Paleozoic xenacanthiforms shows that the tooth cusp morphology is closest to those of Triodus Hampe and Bohemiacanthus Schneider. A restricted cladistic analysis of the xenacanthiforms with outgroups Leonodus Mader, Phoebodus St John and Worthen, and Antarctilamna Young supports the family Diplodoselachidae Hampe as a clade comprising just two genera, Diplodoselache and Reginaselache.


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Project DOI: 10.7934/P538, http://dx.doi.org/10.7934/P538
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 3 Documents
  • 11 Taxa
  • 1 Specimen
  • 19 Characters


Download Project SDD File
Total scored cells: 196
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 19
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 52
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:19/0
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MorphoBank Project 538


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
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    MorphoBank Curator
    Project Administrator
    Last logged in 04/20/12
    11111900196
    (196, 0, 0)
    000
    Maureen Admin
    Full membership
    Last logged in 06/27/11
    0000000
    (0, 0, 0)
    000
    Carole Burrow
    Full membership
    Last logged in 06/27/11
    0000000
    (0, 0, 0)
    000
    Sue Turner
    Full membership
    Last logged in Never
    0000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M1217' (11 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] Leonodus
    Last Modified in 12/05/13
    2171700004
    [2] Antarctilamna
    Last Modified in 12/05/13
    1201800004
    [3] Phoebodus
    Last Modified in 12/05/13
    5171400004
    [4] Diplodoselache
    Last Modified in 12/05/13
    0201900004
    [5] Hagenoselache
    Last Modified in 12/05/13
    5151400004
    [6] Lebachacanthus
    Last Modified in 12/05/13
    3161600004
    [7] Orthacanthus
    Last Modified in 12/05/13
    1181800004
    [8] Plicatodus
    Last Modified in 12/05/13
    1181800004
    [9] Reginaselache
    Last Modified in 12/05/13
    3161600004
    [10] Triodus
    Last Modified in 12/05/13
    0191900004
    [11] Xenacanthus
    Last Modified in 12/05/13
    1201800004


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    Media views3522M88275 (533 views); Media search (2989 views);
    Taxon list7756
    Matrix views1471Matrix landing page (1287 views); Xenacanthiform Shark (184 views);
    Specimen list2109
    Documents list929
    Views for media list1125
    Bibliography748




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    Total downloads from project293
    Document downloads1Copyright permission from SVP (1 download);
    Matrix downloads1Xenacanthiform Shark (1 download);
    Project downloads291