Project 488: K. D. Angielczyk, B. S. Rubidge. 2010. A New Pylaecephalid Dicynodont (Therapsida, Anomodontia) from the Tapinocephalus Assemblage Zone, Karoo Basin, Middle Permian of South Africa. Journal of Vertebrate Paleontology. 30 (5):1396-1409.
Specimen: † Prosictodon (BPI:BP/1/5589)

Abstract

We describe Prosictodon dubei, gen. et sp. nov., from the Abrahamskraal Formation, Karoo Basin, Middle Permian of South Africa. Diagnostic characters of P. dubei include postorbitals that slope ventrolaterally and overlap the parietals nearly completely; median anterior palatal ridges that converge with the posterior median palatal ridge, forming a V-shaped structure; caniniform process with an anterior edge that is set off from the palatal rim forming a notch; ‘postcanine’ teeth present on the maxilla; a ventrally directed transverse flange of the pterygoid with an obtuse posterior margin; a short interpterygoid vacuity that does not reach the level of the palatine pads; a dentary table that forms an elongate grooved surface on the dorsal surface of the dentary, bounded laterally by a low ridge and medially by a tall, thin, dorsally convex blade; ‘postcanine’ teeth present on the dentary blade; and the absence of a posterior dentary sulcus. A phylogenetic analysis confirms that P. dubei is a member of Pylaecephalidae, although we cannot corroborate that it is the sister taxon of Diictodon feliceps. The holotype of P. dubei was collected low in the Tapinocephalus Assemblage Zone in the northwestern Karoo Basin, near the contact between the Ecca and Beaufort groups, within the stratigraphic range of Robertia but above the ranges of Eodicynodon and Colobodectes. On-going research suggests dicynodonts in the Tapinocephalus Assemblage Zone appeared in sequence (Colobodectes first; Lanthanostegus, Robertia, Prosictodon second; Diictodon and Pristerodon third), in contrast to earlier works that portrayed Diictodon, Robertia, and Pristerodon as occurring throughout the zone.


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Project DOI: 10.7934/P488, http://dx.doi.org/10.7934/P488
This project containsMatrices
  • 9 Media
  • 1 Matrix
  • 2 Documents
  • 38 Taxa
  • 1 Specimen
  • 75 Characters
Total size of project's media files: 16 MB

Download Project SDD File
Total scored cells: 2207
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 75
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 200
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:75/0
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MorphoBank Project 488


    Members

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    MorphoBank Curator
    Project Administrator
    Last logged in 03/12/12
    380075002207
    (2207, 0, 0)
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    Maureen Admin
    Full membership
    Last logged in 07/15/11
    0000000
    (0, 0, 0)
    000
    Kenneth Angielczyk
    Full membership
    Last logged in 06/29/11
    0190000
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    Taxonomic Overview for Matrix 'M1087' (38 Taxa)

    taxon unscored
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    [1] Patranomodon
    Last Modified in 12/05/13
    25505000003
    [2] Otsheria
    Last Modified in 12/05/13
    36393900003
    [3] Eodicynodon
    Last Modified in 12/05/13
    0757500003
    [4] Diictodon
    Last Modified in 12/05/13
    1757400003
    [5] Endothiodon
    Last Modified in 12/05/13
    5707000003
    [6] Chelydontops
    Last Modified in 12/05/13
    22545300003
    [7] Pristerodon
    Last Modified in 12/05/13
    2747300003
    [8] Emydops
    Last Modified in 12/05/13
    11646400003
    [9] Dicynodontoides
    Last Modified in 12/05/13
    3737200003
    [10] Cistecephalus
    Last Modified in 12/05/13
    2737300003
    [11] Myosaurus
    Last Modified in 12/05/13
    18585700003
    [12] Tropidostoma
    Last Modified in 12/05/13
    2737300003
    [13] Oudenodon
    Last Modified in 12/05/13
    1747400003
    [14] Rhachiocephalus
    Last Modified in 12/05/13
    6706900003
    [15] Geikia locusticeps
    Last Modified in 12/05/13
    18575700003
    [16] Aulacephalodon
    Last Modified in 12/05/13
    2757300003
    [17] Dicynodon lacerticeps
    Last Modified in 12/05/13
    19565600003
    [18] Lystrosaurus
    Last Modified in 12/05/13
    1757400003
    [19] Kannemeyeria
    Last Modified in 12/05/13
    1747400003
    [20] Idelesaurus
    Last Modified in 12/05/13
    22535300003
    [21] Interpresosaurus
    Last Modified in 12/05/13
    54212100003
    [22] Elph
    Last Modified in 12/05/13
    32434300003
    [23] "Dicynodon" trautscholdi
    Last Modified in 12/05/13
    22535300003
    [24] Delectosaurus
    Last Modified in 12/05/13
    27494800003
    [25] Vivaxosaurus
    Last Modified in 12/05/13
    19565600003
    [26] "Dicynodon" amaltizkii
    Last Modified in 12/05/13
    39363600003
    [27] Australobarbarus
    Last Modified in 12/05/13
    20575500003
    [28] Colobodectes
    Last Modified in 12/05/13
    28474700003
    [29] "Robertia" sp.
    Last Modified in 12/05/13
    22535300003
    [30] Robertia broomiana
    Last Modified in 12/05/13
    2737300003
    [31] Kombuisia
    Last Modified in 12/05/13
    30454500003
    [32] Cistecephaloides
    Last Modified in 12/05/13
    25505000003
    [33] Kawingasaurus
    Last Modified in 12/05/13
    11646400003
    [34] † Prosictodon
    Last Modified in 12/05/13
    25505000003
    [35] Katumbia
    Last Modified in 12/05/13
    22535300003
    [36] Odontocyclops
    Last Modified in 12/05/13
    5717000003
    [37] Pelanomodon
    Last Modified in 12/05/13
    27484800003
    [38] Lanthanostegus
    Last Modified in 12/05/13
    49262600003


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views24700
    Project overview1944
    Matrix views1466Matrix landing page (1271 views); A New Pylaecephalid Dicynodont (Therapsida, Anomodontia) from the Tapinocephalus Assemblage Zone, Karoo Basin, Middle Permian of South Africa (195 views);
    Media views7303M85668 (481 views); Media search (3228 views); M85671 (442 views); M85663 (435 views); M85665 (470 views); M85664 (451 views); M85666 (427 views); M85669 (474 views); M85670 (460 views); M85667 (435 views);
    Specimen list1972
    Taxon list10336
    Documents list946
    Bibliography733




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    Total downloads from project220
    Matrix downloads10A New Pylaecephalid Dicynodont (Therapsida, Anomodontia) from the Tapinocephalus Assemblage Zone, Karoo Basin, Middle Permian of South Africa (10 downloads);
    Media downloads1M85669 (1 download);
    Project downloads208
    Document downloads1Copyright information for exemplar media (1 download);