Project 3187: J. A. Hopson, J. W. Kitching. 2001. A probainognathian cynodont from South Africa and the phylogeny of nonmammalian cynodonts. Early Evolution of the Synapsida (book). 156:5-35.
Specimen: † Lumkuia fuzzi (unvouchered)
View: right side, photo

Abstract

A new small cynodont from subzone B of the Cynognathus Assemblage Zone (earliest Middle Triassic) of South Africa is described as Lumkuia fuzzi. It is represented by a nearly complete skull and lower jaw, a shoulder girdle and forelimb, and articulated dorsal and caudal vertebrae. It is placed in the eucynodont clade Probainognathia on the basis of four unequivocal synapomorphies, including absence of a parietal foramen and expanded plates on the ribs and a secondary palate extending posteriorly to the level of the orbit. Lumkuia is the oldest and most
primitive probainognathian represented by adequate material. A cladistic analysis strongly supports the monophyly of Cynodontia, Epicynodontia (a new taxon Galesaurus, Thrinaxodon, and including eucynodonts), and Eucvnodontia. The analysis also supports
the eucynodont clades Probainognathia and Cynognathia, and Gomphodontia as a subgroup of the latter. Within Probainognathia, a chiniquodontid clade and a tritheledontid + mammaliaform clade are well ported. Probainognathus is sister to the latter clade, but this node breaks down in trees two steps longer than the shortest tree. Tritylodontids are deeply nested within the traversodont gomphodonts, with "Scalenodon" hirschoni weakly supported as their sister taxon.


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Project DOI: 10.7934/P3187, http://dx.doi.org/10.7934/P3187
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 25 Taxa
  • 2 Specimens
  • 101 Characters


Download Project SDD File
Total scored cells: 2183
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 101
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 237
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:101/0
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MorphoBank Project 3187
  • Creation Date:
    17 May 2018
  • Publication Date:
    18 May 2018
  • Project views: 1644

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    Taxonomic Overview for Matrix 'M25456' (25 Taxa)

    taxon unscored
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    "-" cellscell images labels on
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    [1] † Gorgonopsid
    Last Modified in 05/17/18
    13888800002
    [2] † Lycosuchus
    Last Modified in 05/17/18
    13888800002
    [3] † Dvinia
    Last Modified in 05/17/18
    18838300002
    [4] † Procynosuchus
    Last Modified in 05/17/18
    10919100002
    [5] † Galesaurus
    Last Modified in 05/17/18
    10919100002
    [6] † Thrinaxodon
    Last Modified in 05/17/18
    8939300002
    [7] † Cynognathus
    Last Modified in 05/17/18
    10919100002
    [8] † Diademodon
    Last Modified in 05/17/18
    5969600002
    [9] † Trirachodon
    Last Modified in 05/17/18
    3989800002
    [10] † Pascualgnathus
    Last Modified in 05/17/18
    8939300002
    [11] † Scalenodon angustifrons
    Last Modified in 05/18/18
    17848400002
    [12] † Mandagomphodon
    Last Modified in 05/18/18
    31707000002
    [13] † Luangwa
    Last Modified in 05/17/18
    7949400002
    [14] † Massetognathus
    Last Modified in 05/17/18
    110010000002
    [15] † Gomphodontosuchus
    Last Modified in 05/17/18
    32696900002
    [16] † Exaeretodon
    Last Modified in 05/17/18
    4979700002
    [17] † Tritylodontidae
    Last Modified in 05/17/18
    4979700002
    [18] † Lumkuia fuzzi
    Last Modified in 05/18/18
    20818100002
    [19] † Probainognathus
    Last Modified in 05/17/18
    14878700002
    [20] † Ecteninion
    Last Modified in 05/17/18
    33686800002
    [21] † Probelesodon
    Last Modified in 05/17/18
    11909000002
    [22] † Aleodon
    Last Modified in 05/17/18
    33686800002
    [23] † Chiniquodon
    Last Modified in 05/17/18
    17848400002
    [24] † Pachygenelus
    Last Modified in 05/17/18
    10919100002
    [25] † Morganucodon
    Last Modified in 05/17/18
    10919100002


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    Documents list97
    Media views288Media search (239 views); M565504 (49 views);
    Specimen list159
    Views for media list89
    Bibliography72




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