Project 4000: J. Li, Z. Sun, G. Cuny, C. Ji, D. Jiang, M. Zhou, L. Cavin. 2021. An unusual shark assemblage from the Ladinian–Carnian interval of South China. Papers in Palaeontology. epub ahead of print:none yet.
Specimen: † Keichouodus nimaiguensis (Lijiachun, 2021) (GMPKU/P:3517)
View: GMPKU-P-3517

Abstract

A detailed taxonomic study of a diverse chondrichthyan fauna from the Ladinian-Carnian (Middle-Late Triassic) interval at Nimaigu locality in Guizhou Province, South China is presented. Six taxa are described, two of which are assigned to Elasmobranchii incertae sedis (aff. Rosaodus sp., Rosaodus xingyiensis gen. et sp. nov.), three to the Euselachii (Euselachii gen. et sp. indet., Favusodus orientalis gen. et sp. nov., Keichouodus nimaiguensis gen. et sp. nov.) and the last one representing a possible Holocephali (aff. Arctacanthus sp.). Their stratigraphic distribution is documented on a bed-by-bed basis. This fauna is unusual because it is dominated by sharks with a cladodont-like dentition, which were barely known after the end-Permian mass extinction, and almost devoid of durophagous euselachians, which make it different from all other contemporaneous shark faunas worldwide. Transitional features are documented between “cladodont” teeth and those of neoselachian sharks, which provide new insights on the replacement pattern of “ancient” sharks by “modern” ones.


Read the article »

Article DOI: 10.1002/spp2.1404

Project DOI: 10.7934/P4000, http://dx.doi.org/10.7934/P4000
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 4 Documents
  • 15 Taxa
  • 47 Specimens
  • 24 Characters
Total size of project's media files: 152.2k

Download Project SDD File
Total scored cells: 192
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 24
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 51
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:24/0
Currently Viewing:
MorphoBank Project 4000
  • Creation Date:
    12 May 2021
  • Publication Date:
    09 October 2021
  • Project views: 1068

    Authors' Institutions

    • Beijing University (Peking University)

    • Chinese Academy of Sciences

    • University Claude Bernard Lyon

    • Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences

    • Shandong University of Science and Technology



    Members

    member name taxa specimens media media
    notes
    chars character
    comms
       
    notes  media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    comms
        
    notes  medialabels
    rules
    Jiachun Li
    Project Administrator
    1547102402400192
    (192, 0, 0)
    00000
    Gilles Cuny
    Observer
    0000000000
    (0, 0, 0)
    00000
    Cheng Ji
    Observer
    0000000000
    (0, 0, 0)
    00000
    Zuoyu Sun
    0000000000
    (0, 0, 0)
    00000


    Taxonomic Overview for Matrix 'M27419' (8 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] † Leonodus
    Last Modified in 09/22/21
    0242400004
    [2] † Cladodoides
    Last Modified in 09/22/21
    0242400004
    [3] † Rosaodus
    Last Modified in 09/22/21
    0242400004
    [4] † Euselachii indet.
    Last Modified in 09/22/21
    0242400004
    [5] † Hybodus
    Last Modified in 09/22/21
    0242400004
    [6] † Favusodus
    Last Modified in 09/22/21
    0242400004
    [7] † Keichouodus
    Last Modified in 09/22/21
    0242400004
    [8] † Synechodus
    Last Modified in 09/22/21
    0242400004


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views1068
    Project overview50
    Media views104Media search (90 views); M740267 (14 views);
    Documents list35
    Matrix views37Matrix landing page (37 views);
    Taxon list204
    Bibliography20
    Views for media list34
    Specimen list584




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project8
    Project downloads8