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.
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.Read the article »
Project DOI: 10.7934/P1046, http://dx.doi.org/10.7934/P1046
This project contains | Matrices |
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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
MorphoBank Project 1046
- Creation Date:
15 October 2013 - Publication Date:
05 February 2014 - Project views: 41231
- Media downloads: 2
- Matrix downloads: 10
This research
supported by
Authors' Institutions
- Iziko South African Museum, Cape Town
- Muséum national d'Histoire naturelle, Paris (Natural History Museum, Paris)
- University of Washington
- Field Museum of Natural History
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 34 | 1 | 1 | 291 | 0 | 0 | 6342 (6342, 0, 0) | 0 | 0 | 0 | ||||
Maureen Admin Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Brandon Peecook Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M2313' (34 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Erythrosuchus africanus Last Modified in 01/08/14 | 30 | 261 | 261 | 0 | 0 | 0 | 0 | 3 |
[2] † Euparkeria capensis Last Modified in 01/08/14 | 12 | 280 | 279 | 0 | 0 | 0 | 0 | 3 |
[3] † Revueltosaurus callenderi Last Modified in 01/08/14 | 31 | 260 | 260 | 0 | 0 | 0 | 0 | 3 |
[4] † Aetosaurus ferratus Last Modified in 01/08/14 | 98 | 194 | 193 | 0 | 0 | 0 | 0 | 3 |
[5] † Arizonasaurus babbitti Last Modified in 01/08/14 | 116 | 175 | 175 | 0 | 0 | 0 | 0 | 3 |
[6] † Effigia okeeffeae Last Modified in 01/08/14 | 71 | 220 | 220 | 0 | 0 | 0 | 0 | 3 |
[7] † Batrachotomus kuperferzellensis Last Modified in 01/08/14 | 43 | 248 | 248 | 0 | 0 | 0 | 0 | 3 |
[8] † Postosuchus kirkpatricki Last Modified in 01/08/14 | 52 | 239 | 239 | 0 | 0 | 0 | 0 | 3 |
[9] † Dromicosuchus grallator Last Modified in 01/08/14 | 92 | 199 | 199 | 0 | 0 | 0 | 0 | 3 |
[10] † Eudimorphodon ranzii Last Modified in 01/08/14 | 151 | 140 | 140 | 0 | 0 | 0 | 0 | 3 |
[12] † Dimorphodon macronyx Last Modified in 01/08/14 | 134 | 157 | 157 | 0 | 0 | 0 | 0 | 3 |
[13] † Lagerpeton chanarensis Last Modified in 01/08/14 | 180 | 111 | 111 | 0 | 0 | 0 | 0 | 3 |
[14] † Dromomeron gregorii Last Modified in 01/08/14 | 254 | 37 | 37 | 0 | 0 | 0 | 0 | 3 |
[15] † Dromomeron romeri Last Modified in 01/08/14 | 238 | 53 | 53 | 0 | 0 | 0 | 0 | 3 |
[16] † Marasuchus lilloensis Last Modified in 01/08/14 | 132 | 159 | 159 | 0 | 0 | 0 | 0 | 3 |
[17] † Lewisuchus/Pseudolagosuchus Last Modified in 01/08/14 | 131 | 160 | 160 | 0 | 0 | 0 | 0 | 3 |
[18] † Asilisaurus kongwe Last Modified in 01/08/14 | 148 | 143 | 143 | 0 | 0 | 0 | 0 | 3 |
[19] † Lutungutali sitwensis Last Modified in 01/08/14 | 271 | 20 | 20 | 0 | 0 | 0 | 0 | 3 |
[20] † Eucoelophysis baldwini Last Modified in 01/08/14 | 267 | 24 | 24 | 0 | 0 | 0 | 0 | 3 |
[21] † Sacisaurus agudoensis Last Modified in 01/08/14 | 216 | 75 | 75 | 0 | 0 | 0 | 0 | 3 |
[23] † Silesaurus opolensis Last Modified in 01/08/14 | 46 | 246 | 245 | 0 | 0 | 0 | 0 | 3 |
[24] † Pisanosaurus mertii Last Modified in 01/08/14 | 219 | 72 | 72 | 0 | 0 | 0 | 0 | 3 |
[25] † Heterodontosaurus tucki Last Modified in 01/08/14 | 49 | 244 | 242 | 0 | 0 | 0 | 0 | 3 |
[26] † Lesothosaurus dianosticus Last Modified in 01/08/14 | 57 | 234 | 234 | 0 | 0 | 0 | 0 | 3 |
[27] † Herrerasaurus ischigualastensis Last Modified in 01/08/14 | 38 | 253 | 253 | 0 | 0 | 0 | 0 | 3 |
[28] † Eoraptor lunensis Last Modified in 01/08/14 | 90 | 202 | 201 | 0 | 0 | 0 | 0 | 3 |
[29] † Saturnalia tupiniquim Last Modified in 01/08/14 | 136 | 155 | 155 | 0 | 0 | 0 | 0 | 3 |
[30] † Plateosaurus engelhardti Last Modified in 01/08/14 | 18 | 273 | 273 | 0 | 0 | 0 | 0 | 3 |
[31] † Efraasia minor Last Modified in 01/08/14 | 53 | 238 | 238 | 0 | 0 | 0 | 0 | 3 |
[32] † Tawa hallae Last Modified in 01/08/14 | 42 | 249 | 249 | 0 | 0 | 0 | 0 | 3 |
[33] † Coelophysis bauri Last Modified in 01/08/14 | 27 | 264 | 264 | 0 | 0 | 0 | 0 | 3 |
[34] † Dilophosaurus wetherelli Last Modified in 01/08/14 | 44 | 247 | 247 | 0 | 0 | 0 | 0 | 3 |
[35] † Allosaurus fragilis Last Modified in 01/08/14 | 21 | 270 | 270 | 0 | 0 | 0 | 0 | 3 |
[36] † Velociraptor mongoliensis Last Modified in 01/08/14 | 51 | 240 | 240 | 0 | 0 | 0 | 0 | 3 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 41231 | |
Project overview | 4460 | |
Taxon list | 17462 | |
Matrix views | 3119 | Matrix landing page (2800 views); Peecook et al matrix (319 views); |
Media views | 6987 | Media search (6045 views); M323733 (942 views); |
Specimen list | 3384 | |
Views for media list | 1965 | |
Bibliography | 1448 | |
Documents list | 2406 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 358 | |
Project downloads | 346 | |
Matrix downloads | 10 | Peecook et al matrix (10 downloads); |
Media downloads | 2 | M323733 (2 downloads); |