Project 485: Nesbitt, S. J., P. M. Barrett, S. Werning, C. A. Sidor, and A. J. Charig. 2013. The oldest dinosaur? A Middle Triassic dinosauriform from Tanzania. Biology Letters. 9:5pp.
Specimen: †Nyasasaurus parringtoni (NHMUK:R6586)
View: histology (cross-section, mid-diaphysis)

Abstract

The rise of dinosaurs was a major event in vertebrate history, but the timing of the origin and early diversification of the group remain poorly constrained. Here, we describe Nyasasaurus parringtoni gen. et sp. nov., which is identified as either the earliest known member of, or the sister-taxon to, Dinosauria. Nyasasaurus possesses a unique combination of dinosaur character states and an elevated growth rate similar to that of definitive early dinosaurs. It demonstrates that the initial dinosaur radiation occurred over a longer timescale than previously thought (possibly 15 Myr earlier), and that dinosaurs and their immediate relatives are better understood as part of a larger Middle Triassic archosauriform radiation. The African provenance of Nyasasaurus supports a southern Pangaean origin for Dinosauria.


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Project DOI: 10.7934/P485, http://dx.doi.org/10.7934/P485
This project containsMatrices
  • 21 Media
  • 1 Matrix
  • 1 Document
  • 3 Folios
  • 83 Taxa
  • 2 Specimens
  • 413 Characters
Total size of project's media files: 168 MB

Download Project SDD File
Total scored cells: 21077
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 413
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 898
Total character states with associated media: 0
Total character states with media with labels:0
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MorphoBank Project 485

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    member name taxa specimens media media
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    notes  media
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    Sarah Werning
    Project Administrator
    Last logged in 12/05/12
    122018000000
    (0, 0, 0)
    00000
    Paul Barrett
    Full membership
    Last logged in 04/11/11
    0000000000
    (0, 0, 0)
    00000
    Sterling Nesbitt
    Full membership
    Last logged in 12/04/12
    820004130190021077
    (19964, 0, 1113)
    081000
    Christian Sidor
    Full membership
    Last logged in 07/13/12
    0000000000
    (0, 0, 0)
    00000


    Taxonomic Overview for Matrix 'M1808' (82 Taxa)

    taxon unscored
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    [1] Mesosuchus browni
    Last Modified in 12/05/13
    36329329048004
    [2] Prolacerta broomi
    Last Modified in 12/05/13
    13358358042004
    [3] Proterosuchus fergusi
    Last Modified in 12/05/13
    19364361030004
    [4] Erythrosuchus africanus
    Last Modified in 12/05/13
    27363363023004
    [5] Vancleavea campi
    Last Modified in 12/05/13
    105284284024004
    [6] Chanaresuchus bonapartei
    Last Modified in 12/05/13
    41360360012004
    [7] Tropidosuchus romeri
    Last Modified in 12/05/13
    89310310014004
    [8] Euparkeria capensis
    Last Modified in 12/05/13
    939639509004
    [9] Parasuchus hislopi
    Last Modified in 12/05/13
    54347347012004
    [10] Smilosuchus gregorii
    Last Modified in 12/05/13
    61338338014004
    [11] Pseudopalatus pristinus
    Last Modified in 12/05/13
    19382382012004
    [12] Gracilisuchus stipanicicorum
    Last Modified in 12/05/13
    10230230209004
    [13] Turfanosuchus dabanensis
    Last Modified in 12/05/13
    14526125907004
    [14] Ornithosuchus longidens
    Last Modified in 12/05/13
    13327327307004
    [15] Riojasuchus tenuisceps
    Last Modified in 12/05/13
    5235235209004
    [16] Revueltosaurus callenderi
    Last Modified in 12/05/13
    2937737707004
    [17] Aetosaurus ferratus
    Last Modified in 12/05/13
    14626626502004
    [18] Stagonolepis robertsoni
    Last Modified in 12/05/13
    9531431304004
    [19] Longosuchus meadei
    Last Modified in 12/05/13
    6134533407004
    [20] Ticinosuchus ferox
    Last Modified in 12/05/13
    20820119604004
    [21] Qianosuchus mixtus
    Last Modified in 12/05/13
    12828228203004
    [22] Xilousuchus sapingensis
    Last Modified in 12/05/13
    29611711600004
    [23] Arizonasaurus babbitti
    Last Modified in 12/05/13
    149252250012004
    [24] Poposaurus gracilis holotype
    Last Modified in 12/05/13
    374383701004
    [25] Poposaurus gracilis yale
    Last Modified in 12/05/13
    186214208014004
    [26] Lotosaurus adentus
    Last Modified in 12/05/13
    73310310030004
    [27] Sillosuchus longicervix
    Last Modified in 12/05/13
    3247979010004
    [28] Effigia okeeffeae
    Last Modified in 12/05/13
    69315315029004
    [29] Shuvosaurus inexpectatus
    Last Modified in 12/05/13
    76308308029004
    [30] Combined prestosuchus
    Last Modified in 12/05/13
    5635335304004
    [31] Saurosuchus galilei
    Last Modified in 12/05/13
    10330830302004
    [32] Batrachotomus kuperferzellensis
    Last Modified in 12/05/13
    6235034601004
    [33] Fasolasuchus tenax
    Last Modified in 12/05/13
    25016116102004
    [34] Rauisuchus triradentes
    Last Modified in 12/05/13
    28113213200004
    [35] Polonosuchus silesiacus
    Last Modified in 12/05/13
    29511811800004
    [36] Postosuchus kirkpatricki
    Last Modified in 12/05/13
    7233733704004
    [37] Postosuchus alisonae
    Last Modified in 12/05/13
    24216916802004
    [38] CM 73372
    Last Modified in 12/05/13
    24816116004004
    [39] Hesperosuchus agilis
    Last Modified in 12/05/13
    19521521403004
    [40] Dromicosuchus grallator
    Last Modified in 12/05/13
    13927026904004
    [41] Hesperosuchus "agilis"
    Last Modified in 12/05/13
    12028828805004
    [42] Dibothrosuchus elaphros
    Last Modified in 12/05/13
    18921821806004
    [43] Terrestrisuchus gracilis
    Last Modified in 12/05/13
    8831731708004
    [44] Sphenosuchus acutus
    Last Modified in 12/05/13
    19221621505004
    [45] Litargosuchus leptorhynchus
    Last Modified in 12/05/13
    22019018903004
    [46] Kayentasuchus walkeri
    Last Modified in 12/05/13
    30510610602004
    [47] Orthosuchus stormbergi
    Last Modified in 12/05/13
    78321321014004
    [48] Alligator mississippiensis
    Last Modified in 12/05/13
    4370367041004
    [49] Protosuchus haughtoni
    Last Modified in 12/05/13
    25015815805004
    [50] Protosuchus richardsoni
    Last Modified in 12/05/13
    41360360012004
    [51] Eudimorphodon ranzii
    Last Modified in 12/05/13
    187191191035004
    [52] Dimorphodon macronyx
    Last Modified in 12/05/13
    177201201035004
    [53] Lagerpeton chanarensis
    Last Modified in 12/05/13
    260133133020004
    [54] Dromomeron gregorii
    Last Modified in 12/05/13
    370424201004
    [55] Dromomeron romeri
    Last Modified in 12/05/13
    3326161020004
    [56] Marasuchus lilloensis
    Last Modified in 12/05/13
    194203203016004
    [57] Asilisaurus kongwe
    Last Modified in 12/05/13
    222175175016004
    [58] Eucoelophysis baldwini
    Last Modified in 12/05/13
    387262600004
    [59] Sacisaurus agudoensis
    Last Modified in 12/05/13
    318919104004
    [60] Lewisuchus admixtus
    Last Modified in 12/05/13
    273130130010004
    [61] Pseudolagosuchus majori
    Last Modified in 12/05/13
    3019595017004
    [62] Lewisuchus/Pseudolagosuchus
    Last Modified in 12/05/13
    18722422402004
    [63] Eocursor parvus
    Last Modified in 12/05/13
    259141141013004
    [64] Silesaurus opolensis
    Last Modified in 12/05/13
    56334332024004
    [65] Pisanosaurus mertii
    Last Modified in 12/05/13
    3088888017004
    [66] Heterodontosaurus tucki
    Last Modified in 12/05/13
    44343341028004
    [67] Lesothosaurus diagnosticus
    Last Modified in 12/05/13
    59329328026004
    [68] Scutellosaurus lawleri
    Last Modified in 12/05/13
    229169166016004
    [69] Herrerasaurus ischigualastensis
    Last Modified in 12/05/13
    47343340023004
    [70] Staurikosaurus pricei
    Last Modified in 12/05/13
    285115115013004
    [71] Eoraptor lunensis
    Last Modified in 12/05/13
    108283276023004
    [72] Saturnalia tupiniquim
    Last Modified in 12/05/13
    199193193021004
    [73] Plateosaurus engelhardti
    Last Modified in 12/05/13
    6383381024004
    [74] Efraasia minor
    Last Modified in 12/05/13
    68319319026004
    [75] Tawa hallae
    Last Modified in 12/05/13
    45344344024004
    [76] Coelophysis bauri
    Last Modified in 12/05/13
    31361361021004
    [77] Dilophosaurus wetherelli
    Last Modified in 12/05/13
    53337335023004
    [78] Allosaurus fragilis
    Last Modified in 12/05/13
    11372372030004
    [79] Velociraptor mongoliensis
    Last Modified in 12/05/13
    44336335034004
    [80] †Nyasasaurus parringtoni nhmuk (holotype)
    Last Modified in 12/05/13
    399141400004
    [81] Nyasasaurus parringtoni sam (referred)
    Last Modified in 12/05/13
    403101000004
    [82] Nyasasaurus parringtoni combined (holotype + referred)
    Last Modified in 12/05/13
    390232300004


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    Total project views9039
    Project overview817
    Media views3656Media search (1110 views); M128713 (116 views); M128711 (107 views); M128712 (119 views); M149577 (207 views); M67962 (130 views); M128709 (128 views); M68023 (169 views); M128708 (125 views); M68004 (94 views); M68003 (108 views); M68005 (137 views); M149578 (109 views); M128714 (103 views); M128710 (93 views); M68022 (144 views); M68025 (91 views); M68024 (91 views); M68021 (154 views); M68008 (105 views); M68006 (107 views); M68007 (109 views);
    Matrix views402Matrix landing page (359 views); The relationships of Nyasasaurus (43 views);
    Specimen list630
    Folio views539Folio list (216 views); NHMUK R6856 Histology (106 views); NHMUK R6856 Osteology (116 views); SAM-PK-K10654 Osteology (101 views);
    Documents list289
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    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project128
    Matrix downloads19The relationships of Nyasasaurus (19 downloads);
    Media downloads87M128712 (4 downloads); M67962 (5 downloads); M68003 (7 downloads); M68004 (3 downloads); M68005 (9 downloads); M128713 (4 downloads); M128711 (5 downloads); M149578 (2 downloads); M149577 (7 downloads); M128714 (4 downloads); M128710 (3 downloads); M128709 (3 downloads); M128708 (10 downloads); M68023 (3 downloads); M68022 (3 downloads); M68025 (2 downloads); M68024 (2 downloads); M68021 (4 downloads); M68008 (3 downloads); M68006 (3 downloads); M68007 (1 download);
    Project downloads12
    Document downloads10Nyasasaurus final (10 downloads);