Project 1046: B. R. Peecook,C. A. Sidor,S. J. Nesbitt,R. M. H. Smith,J. S. Steyer,K. D. Anigelczyck. 2013. A New Silesaurid from the Upper Ntawere Formation of Zambia (Middle Triassic) Demonstrates the Rapid Diversification of Silesauridae (Avemetatarsalia, Dinosauriformes). Journal of Vertebrate Paleontology. 33 (5):1127-1137.
Specimen: † Lutungutali sitwensis (NHCC:LB32)
View: lateral

Abstract

Recent discoveries have shown that non-dinosaurian dinosauromorphs were morphologically diverse, globally distributed, and have a stratigraphic range extending into the Upper Triassic. Silesauridae, the sister group to Dinosauria, contains at least seven species. Here we describe Lutungutali sitwensis, gen. et sp. nov., the first silesaurid from the upper portion of the Ntawere Formation of the Luangwa Basin, Zambia. The upper Ntawere Formation has been correlated with subzone C of the Cynognathus Assemblage Zone of the Karoo Basin in South Africa and the Lifua Member of the Manda beds in the Ruhuhu Basin in Tanzania, both of which are considered Anisian in age and the latter has yielded the silesaurid Asilisaurus kongwe. The results of our phylogenetic analysis, including a new pelvic character, allies Lutungutali with Upper Triassic silesaurids such as Silesaurus, Sacisaurus, and Eucoelophysis rather than with the possibly coeval Asilisaurus. The Zambian silesaurid shares a laterally oriented brevis fossa on the ilium and a transversely thin ischium in cross-section with Upper Triassic forms. Silesaurids were more diverse during their early evolution in the Anisian than previously suspected. Lutungutali and Asilisaurus are the two oldest known members of the bird-line archosaurs represented by body fossils. Together they show that a subclade of bird-line archosaurs was diversifying soon after its origin, building further support for the rapid diversification of Archosauria in the wake of the Permo-Triassic extinction.


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Project DOI: 10.7934/P1046, http://dx.doi.org/10.7934/P1046
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 34 Taxa
  • 1 Specimen
  • 291 Characters
Total size of project's media files: 36 MB

Download Project SDD File
Total scored cells: 6342
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 291
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 648
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:291/0
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MorphoBank Project 1046

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    MorphoBank Curator
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    Last logged in 08/06/14
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    Maureen Admin
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    Brandon Peecook
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    Taxonomic Overview for Matrix 'M2313' (34 Taxa)

    taxon unscored
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    [1] † Erythrosuchus africanus
    Last Modified in 01/08/14
    3026126100003
    [2] † Euparkeria capensis
    Last Modified in 01/08/14
    1228027900003
    [3] † Revueltosaurus callenderi
    Last Modified in 01/08/14
    3126026000003
    [4] † Aetosaurus ferratus
    Last Modified in 01/08/14
    9819419300003
    [5] † Arizonasaurus babbitti
    Last Modified in 01/08/14
    11617517500003
    [6] † Effigia okeeffeae
    Last Modified in 01/08/14
    7122022000003
    [7] † Batrachotomus kuperferzellensis
    Last Modified in 01/08/14
    4324824800003
    [8] † Postosuchus kirkpatricki
    Last Modified in 01/08/14
    5223923900003
    [9] † Dromicosuchus grallator
    Last Modified in 01/08/14
    9219919900003
    [10] † Eudimorphodon ranzii
    Last Modified in 01/08/14
    15114014000003
    [12] † Dimorphodon macronyx
    Last Modified in 01/08/14
    13415715700003
    [13] † Lagerpeton chanarensis
    Last Modified in 01/08/14
    18011111100003
    [14] † Dromomeron gregorii
    Last Modified in 01/08/14
    254373700003
    [15] † Dromomeron romeri
    Last Modified in 01/08/14
    238535300003
    [16] † Marasuchus lilloensis
    Last Modified in 01/08/14
    13215915900003
    [17] † Lewisuchus/Pseudolagosuchus
    Last Modified in 01/08/14
    13116016000003
    [18] † Asilisaurus kongwe
    Last Modified in 01/08/14
    14814314300003
    [19] † Lutungutali sitwensis
    Last Modified in 01/08/14
    271202000003
    [20] † Eucoelophysis baldwini
    Last Modified in 01/08/14
    267242400003
    [21] † Sacisaurus agudoensis
    Last Modified in 01/08/14
    216757500003
    [23] † Silesaurus opolensis
    Last Modified in 01/08/14
    4624624500003
    [24] † Pisanosaurus mertii
    Last Modified in 01/08/14
    219727200003
    [25] † Heterodontosaurus tucki
    Last Modified in 01/08/14
    4924424200003
    [26] † Lesothosaurus dianosticus
    Last Modified in 01/08/14
    5723423400003
    [27] † Herrerasaurus ischigualastensis
    Last Modified in 01/08/14
    3825325300003
    [28] † Eoraptor lunensis
    Last Modified in 01/08/14
    9020220100003
    [29] † Saturnalia tupiniquim
    Last Modified in 01/08/14
    13615515500003
    [30] † Plateosaurus engelhardti
    Last Modified in 01/08/14
    1827327300003
    [31] † Efraasia minor
    Last Modified in 01/08/14
    5323823800003
    [32] † Tawa hallae
    Last Modified in 01/08/14
    4224924900003
    [33] † Coelophysis bauri
    Last Modified in 01/08/14
    2726426400003
    [34] † Dilophosaurus wetherelli
    Last Modified in 01/08/14
    4424724700003
    [35] † Allosaurus fragilis
    Last Modified in 01/08/14
    2127027000003
    [36] † Velociraptor mongoliensis
    Last Modified in 01/08/14
    5124024000003


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views22858
    Project overview2892
    Taxon list7834
    Matrix views2129Matrix landing page (1908 views); Peecook et al matrix (221 views);
    Media views4289Media search (3774 views); M323733 (515 views);
    Specimen list2023
    Views for media list1182
    Bibliography837
    Documents list1672




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project174
    Project downloads163
    Matrix downloads9Peecook et al matrix (9 downloads);
    Media downloads2M323733 (2 downloads);