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
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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Sarah Werning
Project Administrator
Last logged in 12/05/12
122018000000
(0, 0, 0)
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Paul Barrett
Full membership
Last logged in 04/11/11
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Sterling Nesbitt
Full membership
Last logged in 12/04/12
820004130190021077
(19964, 0, 1113)
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Christian Sidor
Full membership
Last logged in 07/13/12
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(0, 0, 0)
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Taxonomic Overview for Matrix 'M1808' (82 Taxa)

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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

type number of views Individual items viewed (where applicable)
Total project views2078
Project overview224
Media views1011Media search (431 views); M128713 (30 views); M128711 (27 views); M128712 (26 views); M149577 (64 views); M67962 (50 views); M128709 (31 views); M68023 (25 views); M128708 (44 views); M68004 (25 views); M68003 (29 views); M68005 (30 views); M149578 (21 views); M128714 (23 views); M128710 (18 views); M68022 (20 views); M68025 (14 views); M68024 (21 views); M68021 (26 views); M68008 (18 views); M68006 (20 views); M68007 (18 views);
Matrix views104Matrix landing page (93 views); The relationships of Nyasasaurus (11 views);
Specimen list142
Folio views92Folio list (43 views); NHMUK R6856 Histology (15 views); NHMUK R6856 Osteology (23 views); SAM-PK-K10654 Osteology (11 views);
Documents list57
Taxon list346
Views for media list102




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);