Project 741: D. Pol, O. W. M. Rauhut. 2012. A Middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs. Proceedings of the Royal Society B: Biological Sciences.
Abstract
Abelisaurids are a clade of large, bizarre predatory dinosaurs, most notable for their high, short skulls and extremely reduced forelimbs. They were common in Gondwana during the Cretaceous, but exceedingly rare in the Northern Hemisphere. The oldest definitive abelisaurids so far come from the late Early Cretaceous of South America and Africa, and the early evolutionary history of the clade is still poorly known. Here, we report a new abelisaurid from the Middle Jurassic of Patagonia, Eoabelisaurus mefi gen. et sp. nov., which predates the so far oldest known secure member of this lineage by more than 40 Myr. The almost complete skeleton reveals the earliest evolutionary stages of the distinctive features of abelisaurids, such as the modification of the forelimb, which started with a reduction of the distal elements. The find underlines the explosive radiation of theropod dinosaurs in the Middle Jurassic and indicates an unexpected diversity of ceratosaurs at that time. The apparent endemism of abelisauroids to southern Gondwana during Pangean times might be due to the presence of a large, central Gondwanan desert. This indicates that, apart from continent-scale geography, aspects such as regional geography and climate are important to reconstruct the biogeographical history of Mesozoic vertebrates.Read the article »
Project DOI: 10.7934/P741, http://dx.doi.org/10.7934/P741
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 2307 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 206 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 427 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:206/0 |
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MorphoBank Project 741
MorphoBank Project 741
- Creation Date:
02 June 2012 - Publication Date:
09 November 2012 - Project views: 44514
- Media downloads: 6
- Matrix downloads: 14
Authors' Institutions
- Museo Paleontológico Egidio Feruglio
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Bayerische Staatssammlung fuer Palaeontologie und Geologie
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Maureen Admin Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Diego Pol Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Oliver Rauhut Full membership | 27 | 1 | 3 | 206 | 0 | 0 | 2307 (2301, 0, 6) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M1693' (27 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Herrerasaurus Last Modified in 12/05/13 | 3 | 204 | 202 | 0 | 1 | 0 | 0 | 4 |
[2] † Syntarsus Last Modified in 12/05/13 | 2 | 205 | 204 | 0 | 0 | 0 | 0 | 4 |
[3] † Allosaurus Last Modified in 12/05/13 | 0 | 206 | 205 | 0 | 1 | 0 | 0 | 4 |
[4] † Abelisaurus Last Modified in 12/05/13 | 141 | 65 | 65 | 0 | 0 | 0 | 0 | 4 |
[5] † Aucasaurus Last Modified in 12/05/13 | 136 | 71 | 70 | 0 | 0 | 0 | 0 | 4 |
[6] † Berberosaurus Last Modified in 12/05/13 | 181 | 28 | 25 | 0 | 0 | 0 | 0 | 4 |
[7] † Carnotaurus Last Modified in 12/05/13 | 30 | 176 | 176 | 0 | 0 | 0 | 0 | 4 |
[8] † Ceratosaurus Last Modified in 12/05/13 | 10 | 199 | 196 | 0 | 0 | 0 | 0 | 4 |
[9] † Deltadromeus Last Modified in 12/05/13 | 176 | 30 | 30 | 0 | 0 | 0 | 0 | 4 |
[10] † Ekrixinatosaurus Last Modified in 12/05/13 | 138 | 69 | 68 | 0 | 0 | 0 | 0 | 4 |
[11] † Elaphrosaurus Last Modified in 12/05/13 | 125 | 83 | 81 | 0 | 0 | 0 | 0 | 4 |
[12] † Eoabelisaurus Last Modified in 12/05/13 | 75 | 136 | 130 | 0 | 1 | 0 | 0 | 4 |
[13] † Genusaurus Last Modified in 12/05/13 | 190 | 17 | 16 | 0 | 0 | 0 | 0 | 4 |
[14] † Genyodectes Last Modified in 12/05/13 | 193 | 14 | 13 | 0 | 0 | 0 | 0 | 4 |
[15] † Ilokelesia Last Modified in 12/05/13 | 163 | 43 | 43 | 0 | 0 | 0 | 0 | 4 |
[16] † Indosaurus Last Modified in 12/05/13 | 194 | 12 | 12 | 0 | 0 | 0 | 0 | 4 |
[17] † Kryptops Last Modified in 12/05/13 | 190 | 17 | 16 | 0 | 0 | 0 | 0 | 4 |
[18] † Laevisuchus Last Modified in 12/05/13 | 194 | 12 | 12 | 0 | 0 | 0 | 0 | 4 |
[19] † Limusaurus Last Modified in 12/05/13 | 101 | 109 | 102 | 0 | 3 | 0 | 0 | 4 |
[20] † Majungasaurus Last Modified in 12/05/13 | 22 | 185 | 184 | 0 | 0 | 0 | 0 | 4 |
[21] † Masiakasaurus Last Modified in 12/05/13 | 52 | 154 | 154 | 0 | 0 | 0 | 0 | 4 |
[22] † Noasaurus Last Modified in 12/05/13 | 169 | 38 | 37 | 0 | 0 | 0 | 0 | 4 |
[23] † Rajasaurus Last Modified in 12/05/13 | 142 | 64 | 64 | 0 | 0 | 0 | 0 | 4 |
[24] † Rugops Last Modified in 12/05/13 | 164 | 43 | 42 | 0 | 0 | 0 | 0 | 4 |
[25] † Skorpiovenator Last Modified in 12/05/13 | 129 | 78 | 77 | 0 | 0 | 0 | 0 | 4 |
[26] † Spinostropheus Last Modified in 12/05/13 | 173 | 33 | 33 | 0 | 0 | 0 | 0 | 4 |
[27] † Velocisaurus Last Modified in 12/05/13 | 196 | 10 | 10 | 0 | 0 | 0 | 0 | 4 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 44514 | |
Project overview | 3809 | |
Matrix views | 2909 | Matrix landing page (2560 views); Matrix from Pol & Rauhut 2012 (349 views); |
Media views | 9488 | Media search (5894 views); M109731 (968 views); M109730 (1294 views); M109729 (1332 views); |
Specimen list | 3708 | |
Taxon list | 20934 | |
Bibliography | 1406 | |
Documents list | 2260 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 348 | |
Media downloads | 6 | M109731 (1 download); M109730 (5 downloads); |
Document downloads | 1 | Matrix from Pol & Rauhut 2012 (matrix 1693) (1 download); |
Matrix downloads | 14 | Matrix from Pol & Rauhut 2012 (14 downloads); |
Project downloads | 327 |