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: 172 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 09/23/12
    36329329048004
    [2] Prolacerta broomi
    Last Modified in 09/23/12
    13358358042004
    [3] Proterosuchus fergusi
    Last Modified in 09/23/12
    19364361030004
    [4] Erythrosuchus africanus
    Last Modified in 09/23/12
    27363363023004
    [5] Vancleavea campi
    Last Modified in 09/23/12
    105284284024004
    [6] Chanaresuchus bonapartei
    Last Modified in 09/23/12
    41360360012004
    [7] Tropidosuchus romeri
    Last Modified in 09/23/12
    89310310014004
    [8] Euparkeria capensis
    Last Modified in 09/23/12
    939639509004
    [9] Parasuchus hislopi
    Last Modified in 09/23/12
    54347347012004
    [10] Smilosuchus gregorii
    Last Modified in 09/23/12
    61338338014004
    [11] Pseudopalatus pristinus
    Last Modified in 09/23/12
    19382382012004
    [12] Gracilisuchus stipanicicorum
    Last Modified in 09/23/12
    10230230209004
    [13] Turfanosuchus dabanensis
    Last Modified in 09/23/12
    14526125907004
    [14] Ornithosuchus longidens
    Last Modified in 09/23/12
    13327327307004
    [15] Riojasuchus tenuisceps
    Last Modified in 09/23/12
    5235235209004
    [16] Revueltosaurus callenderi
    Last Modified in 09/23/12
    2937737707004
    [17] Aetosaurus ferratus
    Last Modified in 09/23/12
    14626626502004
    [18] Stagonolepis robertsoni
    Last Modified in 09/23/12
    9531431304004
    [19] Longosuchus meadei
    Last Modified in 09/23/12
    6134533407004
    [20] Ticinosuchus ferox
    Last Modified in 09/23/12
    20820119604004
    [21] Qianosuchus mixtus
    Last Modified in 09/23/12
    12828228203004
    [22] Xilousuchus sapingensis
    Last Modified in 09/23/12
    29611711600004
    [23] Arizonasaurus babbitti
    Last Modified in 09/23/12
    149252250012004
    [24] Poposaurus gracilis holotype
    Last Modified in 09/23/12
    374383701004
    [25] Poposaurus gracilis yale
    Last Modified in 09/23/12
    186214208014004
    [26] Lotosaurus adentus
    Last Modified in 09/23/12
    73310310030004
    [27] Sillosuchus longicervix
    Last Modified in 09/23/12
    3247979010004
    [28] Effigia okeeffeae
    Last Modified in 09/23/12
    69315315029004
    [29] Shuvosaurus inexpectatus
    Last Modified in 09/23/12
    76308308029004
    [30] Combined prestosuchus
    Last Modified in 09/23/12
    5635335304004
    [31] Saurosuchus galilei
    Last Modified in 09/23/12
    10330830302004
    [32] Batrachotomus kuperferzellensis
    Last Modified in 09/23/12
    6235034601004
    [33] Fasolasuchus tenax
    Last Modified in 09/23/12
    25016116102004
    [34] Rauisuchus triradentes
    Last Modified in 09/23/12
    28113213200004
    [35] Polonosuchus silesiacus
    Last Modified in 09/23/12
    29511811800004
    [36] Postosuchus kirkpatricki
    Last Modified in 09/23/12
    7233733704004
    [37] Postosuchus alisonae
    Last Modified in 09/23/12
    24216916802004
    [38] CM 73372
    Last Modified in 09/23/12
    24816116004004
    [39] Hesperosuchus agilis
    Last Modified in 09/23/12
    19521521403004
    [40] Dromicosuchus grallator
    Last Modified in 09/23/12
    13927026904004
    [41] Hesperosuchus "agilis"
    Last Modified in 09/23/12
    12028828805004
    [42] Dibothrosuchus elaphros
    Last Modified in 09/23/12
    18921821806004
    [43] Terrestrisuchus gracilis
    Last Modified in 09/23/12
    8831731708004
    [44] Sphenosuchus acutus
    Last Modified in 09/23/12
    19221621505004
    [45] Litargosuchus leptorhynchus
    Last Modified in 09/23/12
    22019018903004
    [46] Kayentasuchus walkeri
    Last Modified in 09/23/12
    30510610602004
    [47] Orthosuchus stormbergi
    Last Modified in 09/23/12
    78321321014004
    [48] Alligator mississippiensis
    Last Modified in 09/23/12
    4370367041004
    [49] Protosuchus haughtoni
    Last Modified in 09/23/12
    25015815805004
    [50] Protosuchus richardsoni
    Last Modified in 09/23/12
    41360360012004
    [51] Eudimorphodon ranzii
    Last Modified in 09/23/12
    187191191035004
    [52] Dimorphodon macronyx
    Last Modified in 09/23/12
    177201201035004
    [53] Lagerpeton chanarensis
    Last Modified in 09/23/12
    260133133020004
    [54] Dromomeron gregorii
    Last Modified in 09/23/12
    370424201004
    [55] Dromomeron romeri
    Last Modified in 09/23/12
    3326161020004
    [56] Marasuchus lilloensis
    Last Modified in 09/23/12
    194203203016004
    [57] Asilisaurus kongwe
    Last Modified in 09/23/12
    222175175016004
    [58] Eucoelophysis baldwini
    Last Modified in 09/23/12
    387262600004
    [59] Sacisaurus agudoensis
    Last Modified in 09/23/12
    318919104004
    [60] Lewisuchus admixtus
    Last Modified in 09/23/12
    273130130010004
    [61] Pseudolagosuchus majori
    Last Modified in 09/23/12
    3019595017004
    [62] Lewisuchus/Pseudolagosuchus
    Last Modified in 09/23/12
    18722422402004
    [63] Eocursor parvus
    Last Modified in 09/23/12
    259141141013004
    [64] Silesaurus opolensis
    Last Modified in 09/23/12
    56334332024004
    [65] Pisanosaurus mertii
    Last Modified in 09/23/12
    3088888017004
    [66] Heterodontosaurus tucki
    Last Modified in 09/23/12
    44343341028004
    [67] Lesothosaurus diagnosticus
    Last Modified in 09/23/12
    59329328026004
    [68] Scutellosaurus lawleri
    Last Modified in 09/23/12
    229169166016004
    [69] Herrerasaurus ischigualastensis
    Last Modified in 09/23/12
    47343340023004
    [70] Staurikosaurus pricei
    Last Modified in 09/23/12
    285115115013004
    [71] Eoraptor lunensis
    Last Modified in 09/23/12
    108283276023004
    [72] Saturnalia tupiniquim
    Last Modified in 09/23/12
    199193193021004
    [73] Plateosaurus engelhardti
    Last Modified in 09/23/12
    6383381024004
    [74] Efraasia minor
    Last Modified in 09/23/12
    68319319026004
    [75] Tawa hallae
    Last Modified in 09/23/12
    45344344024004
    [76] Coelophysis bauri
    Last Modified in 09/23/12
    31361361021004
    [77] Dilophosaurus wetherelli
    Last Modified in 09/23/12
    53337335023004
    [78] Allosaurus fragilis
    Last Modified in 09/23/12
    11372372030004
    [79] Velociraptor mongoliensis
    Last Modified in 09/23/12
    44336335034004
    [80] †Nyasasaurus parringtoni nhmuk (holotype)
    Last Modified in 12/04/12
    399141400004
    [81] Nyasasaurus parringtoni sam (referred)
    Last Modified in 12/04/12
    403101000004
    [82] Nyasasaurus parringtoni combined (holotype + referred)
    Last Modified in 12/04/12
    390232300004


    Project views

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    Total project views3672
    Project overview330
    Media views1623Media search (570 views); M128713 (51 views); M128711 (45 views); M128712 (47 views); M149577 (97 views); M67962 (69 views); M128709 (68 views); M68023 (62 views); M128708 (67 views); M68004 (39 views); M68003 (44 views); M68005 (55 views); M149578 (45 views); M128714 (39 views); M128710 (35 views); M68022 (49 views); M68025 (36 views); M68024 (37 views); M68021 (57 views); M68008 (37 views); M68006 (38 views); M68007 (36 views);
    Matrix views155Matrix landing page (142 views); The relationships of Nyasasaurus (13 views);
    Specimen list241
    Folio views202Folio list (77 views); NHMUK R6856 Histology (41 views); NHMUK R6856 Osteology (50 views); SAM-PK-K10654 Osteology (34 views);
    Documents list105
    Taxon list799
    Views for media list217




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project127
    Matrix downloads18The relationships of Nyasasaurus (18 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);