Project 3942: G. Marramà, G. Carnevale, G. J. Naylor, J. Kriwet. 2020. Skeletal Anatomy, Phylogenetic Relationships, and Paleoecology of the Eocene Urolophid Stingray Arechia Crassicaudata (Blainville, 1818) from Monte Postale (Bolca Lagerstätte, Italy). Journal of Vertebrate Paleontology. 40 (4):e1803339.
Specimen: Gymnura (unvouchered)
View: dorsal

Abstract

In this paper we re-examine the taxonomy and systematic position of the Eocene stingrays from Bolca Lagerstätte which are traditionally assigned to Urolophus crassicaudatus (Blainville). The analysis of their tooth morphology supports an assignment to the Eocene stingray genus Arechia Cappetta, a taxon known from isolated teeth from the Ypresian-Lutetian of northern and western Africa. The teeth of the Bolca specimens differ from the type species A. arambourgi in some characters (i.e., labial face with concave profile just below the crest, convex lower down; lingual face slightly more developed than the labial, with convex profile in its upper part and a concave profile in its mid-lower region) that justify the recognition of a second species within the genus, i.e., A. crassicaudata. This taxon also shows a unique combination of features (e.g., pectoral disc large and rhomboid; tail short, 44–52% of total length; ca. 238 vertebral centra; distal segment of propterygia located between mouth and antorbital cartilage; mesopterygium single, not fused to radials; 100–117 pectoral radials; 15–17 pelvic-fin radials; elongated caudal fin of aplesodic type) that supports its sister-group relationship with the living urolophids Urolophus and Trygonoptera. Arechia was a typical inhabitant of the near coastal and warm habitats that characterize the Monte Postale paleoenvironment.


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Article DOI: 10.1080/02724634.2020.1803339

Project DOI: 10.7934/P3942, http://dx.doi.org/10.7934/P3942
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 33 Taxa
  • 1 Specimen
  • 102 Characters
Total size of project's media files: 7.31M

Download Project SDD File
Total scored cells: 2853
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 102
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 246
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:102/0
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MorphoBank Project 3942
  • Creation Date:
    23 February 2021
  • Publication Date:
    23 February 2021
  • Project views: 262

    Authors' Institutions

    • University of Florida

    • Università degli Studi di Torino (University of Turin)

    • University of Vienna

    • Florida Museum of Natural History



    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    MorphoBank Curator
    Project Administrator
    3311102002853
    (2731, 0, 122)
    000
    Giuseppe Marrama
    Full membership
    0000000
    (0, 0, 0)
    000
    Gavin Naylor
    Full membership
    0000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M27258' (33 Taxa)

    taxon unscored
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    scored
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    NPA
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    "-" cellscell images labels on
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    [1] Rhinobatos
    Last Modified in 02/23/21
    0979705003
    [2] Raja
    Last Modified in 02/23/21
    0979705003
    [3] Hexatrygon
    Last Modified in 02/23/21
    13848405003
    [4] Paratrygon
    Last Modified in 02/23/21
    8898905003
    [5] Styracura
    Last Modified in 02/23/21
    10878705003
    [6] Heliotrygon
    Last Modified in 02/23/21
    38606004003
    [7] Plesiotrygon
    Last Modified in 02/23/21
    8898905003
    [8] Potamotrygon
    Last Modified in 02/23/21
    0979705003
    [9] Aetomyleus
    Last Modified in 02/23/21
    23857900003
    [10] Myliobatis
    Last Modified in 02/23/21
    010810200003
    [11] † Weissobatis
    Last Modified in 02/23/21
    57454500003
    [12] † Promyliobatis
    Last Modified in 02/23/21
    59434300003
    [13] Aetobatus
    Last Modified in 02/23/21
    3979702003
    [14] Rhinoptera
    Last Modified in 02/23/21
    7959500003
    [15] Mobula
    Last Modified in 02/23/21
    12988901003
    [16] Pastinachus
    Last Modified in 02/23/21
    21797803003
    [17] Himantura
    Last Modified in 02/23/21
    0989705003
    [18] Dasyatis
    Last Modified in 02/23/21
    01029705003
    [19] Pteroplatytrygon
    Last Modified in 02/23/21
    1969605003
    [20] Neotrygon
    Last Modified in 02/23/21
    1989605003
    [21] Taeniura
    Last Modified in 02/23/21
    0989705003
    [22] † Protohimantura
    Last Modified in 02/23/21
    50474705003
    [23] † Heliobatis
    Last Modified in 02/23/21
    43545405003
    [24] † Asterotrygon
    Last Modified in 02/23/21
    39585805003
    [25] † Tethytrygon
    Last Modified in 02/23/21
    40626200003
    [26] Urobatis
    Last Modified in 02/23/21
    1989605003
    [27] Urotrygon
    Last Modified in 02/23/21
    0989705003
    [28] Trygonoptera
    Last Modified in 02/23/21
    11868605003
    [29] Urolophus
    Last Modified in 02/23/21
    0989705003
    [30] † Arechia
    Last Modified in 02/23/21
    52484703003
    [31] Gymnura
    Last Modified in 02/23/21
    1979605003
    [32] Plesiobatis
    Last Modified in 02/23/21
    2959505003
    [33] † Lessiniabatis
    Last Modified in 02/23/21
    50484804003


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views262
    Project overview45
    Media views62Media search (54 views); M739144 (8 views);
    Matrix views43Data matrix from supplemental data (19 views); Matrix landing page (24 views);
    Taxon list56
    Bibliography14
    Views for media list18
    Specimen list24




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    Total downloads from project13
    Project downloads13