Project 45: K. M. Claeson, M. A. O'Leary, E. M. Roberts, F. Sissoko, M. Bouaré, L. Tapanila, D. Goodwin, M. D. Gottfried. 2010. First Mesozoic record of the stingray Myliobatis wurnoensis from the Late Cretaceous of Mali and a phylogenetic analysis of Myliobatidae (Batoidea) incorporating dental characters. Acta Palaeontologica Polonica. 55 (4):655-674.
Specimen: † Myliobatis wurnoensis (CNRST-SUNY:37)
View: Occlusal view of dental battery

Abstract

New specimens, including the first record of lower dental plates, of the extinct myliobatid Myliobatis wurnoensis were recovered from the Late Cretaceous (Maastrichtian) of the Iullemmeden Basin, Mali, and are the oldest record of the taxon. We evaluated the phylogenetic position of this taxon with reference to other myliobatids (extinct and extant) using osteology and dentition. Our results indicate that Myliobatinae and Myliobatis are each paraphyletic, and that Aetobatus and Rhinoptera are monophyletic. We also found that taxa known only from the Cretaceous, Brachyrhizodus and Igdabatis, are highly nested within Myliobatidae. The phylogenetic position of these taxa unambiguously extends the origin of Myliobatidae and most of its representative taxa into the Mesozoic.


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Project DOI: 10.7934/P45, http://dx.doi.org/10.7934/P45
This project containsMatrices
  • 187 Media
  • 1 Matrix
  • 2 Documents
  • 55 Taxa
  • 77 Specimens
  • 65 Characters
Total size of project's media files: 258 MB

Download Project SDD File
Total scored cells: 1948
Total media associated with cells: 673
Total labels associated with cell media: 37
Characters
Total characters: 65
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 154
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:65/0
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MorphoBank Project 45

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    Members

    member name taxa specimens media chars character
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    Kerin Claeson
    Project Administrator
    Last logged in 03/09/11
    5576187650001948
    (1880, 0, 68)
    00673370
    MorphoBank Curator
    Full membership
    Last logged in 08/07/14
    00000000
    (0, 0, 0)
    00000
    Michael Gottfried
    Full membership
    Last logged in Never
    00000000
    (0, 0, 0)
    00000
    Seth Kaufman
    Full membership
    Last logged in 08/06/14
    00000000
    (0, 0, 0)
    00003
    Maureen O'Leary
    Full membership
    Last logged in 02/28/11
    01000000
    (0, 0, 0)
    00000
    Eric Roberts
    Full membership
    Last logged in Never
    00000000
    (0, 0, 0)
    00000
    Seth Test
    Full membership
    Last logged in 12/19/10
    00000000
    (0, 0, 0)
    00000


    Taxonomic Overview for Matrix 'M891' (40 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
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    [1] Rhinobatos
    Last Modified in 12/05/13
    26045031907
    [2] Raja
    Last Modified in 12/05/13
    26048031507
    [3] Heliobatis
    Last Modified in 12/05/13
    24383803007
    [4] Asterotrygon
    Last Modified in 12/05/13
    21414103007
    [5] Hexatrygon
    Last Modified in 12/05/13
    7555503007
    [6] Plesiobatis
    Last Modified in 12/05/13
    2606003007
    [7] Urolophus
    Last Modified in 12/05/13
    2616003007
    [8] Trygonoptera
    Last Modified in 12/05/13
    3595903007
    [9] Urobatis
    Last Modified in 12/05/13
    2616003007
    [10] Urotrygon
    Last Modified in 12/05/13
    2606003007
    [11] Paratrygon
    Last Modified in 12/05/13
    2606003007
    [12] Plesiotrygon
    Last Modified in 12/05/13
    2606003007
    [13] Potamotrygon
    Last Modified in 12/05/13
    26048031307
    [14] "Himantura"
    Last Modified in 12/05/13
    2606003007
    [15] Taeniura
    Last Modified in 12/05/13
    2605103907
    [16] Himantura
    Last Modified in 12/05/13
    26146032207
    [17] † Hypolophites
    Last Modified in 12/05/13
    45170032507
    [18] Dasyatis
    Last Modified in 12/05/13
    26348031907
    [19] Pteroplatytrygon
    Last Modified in 12/05/13
    2606003007
    [20] Gymnura
    Last Modified in 12/05/13
    26050031907
    [21] † Apocopodon
    Last Modified in 12/05/13
    43212013207
    [22] † Igdabatis sigmodon
    Last Modified in 12/05/13
    43224004907
    [23] † Brachyrhizodus
    Last Modified in 12/05/13
    44205011507
    [24] Myliobatis freminvillii
    Last Modified in 12/05/13
    16442003307
    [25] Myliobatis goodei
    Last Modified in 12/05/13
    16445002807
    [26] Myliobatis aguila
    Last Modified in 12/05/13
    16451001507
    [27] Myliobatis californicus
    Last Modified in 12/05/13
    16442002607
    [28] † Myliobatis striatus
    Last Modified in 12/05/13
    43221002507
    [29] † Myliobatis toliapicus
    Last Modified in 12/05/13
    43220003207
    [30] † Myliobatis dixoni
    Last Modified in 12/05/13
    43220003007
    [31] † Myliobatis wurnoensis
    Last Modified in 12/05/13
    43224003507
    [32] † Weissobatis micklichi
    Last Modified in 12/05/13
    333222001007
    [33] Aetobatus narinari
    Last Modified in 12/05/13
    26149021627
    [34] † Aetobatus arcuatus
    Last Modified in 12/05/13
    43201024317
    [35] † Aetobatus irregularis
    Last Modified in 12/05/13
    43200024217
    [36] Rhinoptera quadriloba
    Last Modified in 12/05/13
    36242002117
    [37] Rhinoptera bonasus
    Last Modified in 12/05/13
    36242002417
    [38] † Rhinoptera davisei
    Last Modified in 12/05/13
    432210021257
    [39] Mobula
    Last Modified in 12/05/13
    66048002327
    [40] Manta hamiltoni
    Last Modified in 12/05/13
    47186001247


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