Project 749: Kerin M. Claeson, Charlie J. Underwood, David J. Ward. 2013. †Tingitanius tenuimandibulus, a new platyrhinid batoid from the Turonian (Cretaceous) of Morocco and the Cretaceous radiation of the Platyrhinidae. Journal of Vertebrate Paleontology. 33 (5).
Specimen: † Tingitanius tenuimandibulus (NHMUK/P:66857)
View: Ventral

Abstract

An exceptionally well-preserved specimen of a batoid from the Turonian (Late Cretaceous) of Morocco has been named as †Tingitanius tenuimandibulus, sp. nov. The fossil has been identified as a member of the Platyrhinidae and represents the oldest known example of a thornback ray. Mechanical and acid preparation of the ventral surface has revealed the general body form of the specimen and permitted teeth and three morphotypes of dermal denticles to be extracted. Computed tomographic (CT) scanning of the chondrocranium and thoracic region has allowed the detailed study of the skeletal elements concealed within the rock. The phylogenetic position of the new specimen and implications for the phylogenetic positions of the ‘rhinobatoids’ are discussed. †Britobatos, gen. nov., is erected to accommodate †Raja primarmata Woodward, 1889, which is here shown to be a sister taxon to the extant Platyrhinidae + †Tingitanius. It is likely that reassessment of isolated batoid teeth from the Cretaceous and Paleogene will confirm the former importance of the Platyrhinidae.


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Project DOI: 10.7934/P749, http://dx.doi.org/10.7934/P749
This project containsMatrices
  • 74 Media
  • 1 Matrix
  • 2 Documents
  • 30 Taxa
  • 25 Specimens
  • 53 Characters
Total size of project's media files: 219 MB

Download Project SDD File
Total scored cells: 1474
Total media associated with cells: 178
Total labels associated with cell media: 30
Characters
Total characters: 53
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 133
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:53/0
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MorphoBank Project 749


    Members

    member name taxa specimens media media
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    Kerin Claeson
    Project Administrator
    Last logged in 11/19/13
    302574175300001474
    (1449, 0, 25)
    00178300
    MorphoBank Curator
    Full membership
    Last logged in 11/18/13
    0000000000
    (0, 0, 0)
    00000
    Seth Kaufman
    Full membership
    Last logged in Never
    0000000000
    (0, 0, 0)
    00000
    Seth Kaufman
    Full membership
    Last logged in Never
    0000000000
    (0, 0, 0)
    00000
    Trish Mattioli
    Full membership
    Last logged in 11/15/13
    0000000000
    (0, 0, 0)
    00000


    Taxonomic Overview for Matrix 'M1687' (30 Taxa)

    taxon unscored
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    no cell
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    "-" cellscell images labels on
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    [1] Hexanchidae
    Last Modified in 12/05/13
    1484804005
    [2] Pristiophorus
    Last Modified in 12/05/13
    2505001005
    [3] † Sclerorhychus
    Last Modified in 12/05/13
    9444400005
    [4] † Spathobatis
    Last Modified in 12/05/13
    7474600005
    [5] Pristis
    Last Modified in 12/05/13
    0535300005
    [6] Torpedo
    Last Modified in 12/05/13
    0525201005
    [7] Narcine
    Last Modified in 12/05/13
    0525201005
    [8] Narke
    Last Modified in 12/05/13
    1515101005
    [9] † Iansan
    Last Modified in 12/05/13
    3505000005
    [10] Rhynchobatus
    Last Modified in 12/05/13
    0535300005
    [11] † 'Rhinobatos' tenuirostris
    Last Modified in 12/05/13
    16373700005
    [12] † 'Rhinobatos' maronita
    Last Modified in 12/05/13
    9444400005
    [13] Aptychotrema
    Last Modified in 12/05/13
    4494900005
    [14] Zapteryx
    Last Modified in 12/05/13
    0535300005
    [15] Trygonorrhina
    Last Modified in 12/05/13
    1525200005
    [16] † 'Rhinobatos' hakelensis
    Last Modified in 12/05/13
    7464600005
    [17] Raja
    Last Modified in 12/05/13
    0535300005
    [18] † Rhombopterygia
    Last Modified in 12/05/13
    8454500005
    [19] † 'Rhinobatos' whitfieldi
    Last Modified in 12/05/13
    7464600005
    [20] Zanobatos
    Last Modified in 12/05/13
    1525200005
    [21] Myliobatis
    Last Modified in 12/05/13
    0535300005
    [22] Urolophus
    Last Modified in 12/05/13
    0535300005
    [23] Rhinobatos
    Last Modified in 12/05/13
    05320004525
    [24] † 'Rhinobatos' latus
    Last Modified in 12/05/13
    8454500005
    [25] † 'Rhinobatos' intermedius
    Last Modified in 12/05/13
    10434300005
    [26] † Britobatos primarmatus
    Last Modified in 12/05/13
    6474700005
    [27] † Tethybatis
    Last Modified in 12/05/13
    133030010005
    [28] Platyrhina
    Last Modified in 12/05/13
    1525200005
    [29] Platyrhinoidis
    Last Modified in 12/05/13
    05316007805
    [30] † Tingitanius tenuimandibulus
    Last Modified in 12/05/13
    343130755285


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