Project 4210: M. A. Baiano, D. Pol, F. Bellardini, G. J. Windholz, I. A. Cerda, A. C. Garrido, R. A. Coria. 2022. Elemgasem nubilus : a new brachyrostran abelisaurid (Theropoda, Ceratosauria) from the Portezuelo Formation (Upper Cretaceous) of Patagonia, Argentina. Papers in Palaeontology. 8 (5):null.
Abstract
Abelisaurids are medium–large-sized theropod dinosaurs that were predominant in the carnivorous fauna during the Late Cretaceous of Gondwana. These predators are abundant in the Cretaceous fossil strata of Patagonia, which yield the best record for this group. In the Late Cretaceous, abelisaurids appear in almost all regions of Gondwana and in all stages, except for the Coniacian, in which they are globally unknown. Here we describe a new abelisaurid, Elemgasem nubilus gen. et sp. nov., from the Portezuelo Formation (Turonian–Coniacian), Patagonia, Argentina. The palaeohistology of the appendicular bones of Elemgasem shows that the holotype was a subadult individual, but had achieved sexual maturity. This taxon is based on several axial and appendicular elements, and is diagnosed by the presence of a marked pattern of rugosity on the lateral surface of the fibula and a dorsoventrally deep lateral wall of the calcaneum. Moreover, the posterior caudal vertebrae have a morphology slightly different from any other abelisaurid. Elemgasem nubilus is recovered as an unstable taxon within Brachyrostra, given that it was recovered as sister taxon of Furileusauria or in several positions within this clade. Despite the problematic phylogenetic relationships of Elemgasem nubilus, it is important because it is the first abelisaurid from the Turonian–Coniacian interval and it increases the diversity of this theropod family at a time of marked turnover in the tetrapod fauna of South America, global climate change, and mass extinction eventsrecorded worldwide in the marine realm.
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Article DOI: 10.1002/spp2.1462
Project DOI: 10.7934/P4210, http://dx.doi.org/10.7934/P4210
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 3488 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 235 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 494 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:235/0 |
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MorphoBank Project 4210
MorphoBank Project 4210
- Creation Date:
08 March 2022 - Publication Date:
14 August 2022 - Project views: 5467
- Matrix downloads: 4
Authors' Institutions
- Museo Paleontológico Egidio Feruglio
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Universidad Nacional de Rio Negro
- Museo Municipal Ernesto Bachmann
- Instituto de Investigación en Paleobiología y Geología (IIPG)
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Mattia Baiano Project Administrator | 44 | 1 | 1 | 235 | 0 | 0 | 3488 (3483, 0, 5) | 0 | 0 | 0 | ||||
Flavio Bellardini Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Ignacio Cerda Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Rodolfo Coria Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Alberto Garrido 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 | ||||
Guillermo Windholz Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M28724' (43 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 03/28/23 | 5 | 231 | 229 | 0 | 1 | 0 | 0 | 7 |
[2] † Syntarsus Last Modified in 03/28/23 | 3 | 233 | 232 | 0 | 0 | 0 | 0 | 7 |
[3] † Dilophosaurus Last Modified in 03/28/23 | 39 | 198 | 196 | 0 | 0 | 0 | 0 | 7 |
[4] † Allosaurus Last Modified in 03/28/23 | 1 | 234 | 233 | 0 | 1 | 0 | 0 | 7 |
[5] † Abelisaurus Last Modified in 03/28/23 | 172 | 63 | 63 | 0 | 0 | 0 | 0 | 7 |
[6] † Aucasaurus Last Modified in 03/28/23 | 134 | 102 | 101 | 0 | 0 | 0 | 0 | 7 |
[7] † Arcovenator Last Modified in 03/28/23 | 192 | 45 | 43 | 0 | 0 | 0 | 0 | 7 |
[8] † Berberosaurus Last Modified in 03/28/23 | 206 | 32 | 29 | 0 | 0 | 0 | 0 | 7 |
[9] † Carnotaurus Last Modified in 03/28/23 | 38 | 197 | 197 | 0 | 0 | 0 | 0 | 7 |
[10] † CCG 20011 Last Modified in 03/28/23 | 212 | 24 | 23 | 0 | 0 | 0 | 0 | 7 |
[11] † Ceratosaurus Last Modified in 03/28/23 | 12 | 226 | 223 | 0 | 0 | 0 | 0 | 7 |
[12] † Dahalokely Last Modified in 03/28/23 | 205 | 31 | 30 | 0 | 0 | 0 | 0 | 7 |
[13] † Ekrixinatosaurus Last Modified in 03/28/23 | 162 | 74 | 73 | 0 | 0 | 0 | 0 | 7 |
[14] † Elaphrosaurus Last Modified in 03/28/23 | 126 | 110 | 109 | 0 | 0 | 0 | 0 | 7 |
[15] † Eoabelisaurus Last Modified in 03/28/23 | 75 | 164 | 159 | 0 | 1 | 0 | 0 | 7 |
[16] † Genusaurus Last Modified in 03/28/23 | 210 | 26 | 25 | 0 | 0 | 0 | 0 | 7 |
[17] † Genyodectes Last Modified in 03/28/23 | 222 | 14 | 13 | 0 | 0 | 0 | 0 | 7 |
[18] † Huinculsaurus Last Modified in 03/28/23 | 221 | 14 | 14 | 0 | 0 | 0 | 0 | 7 |
[19] † Ilokelesia Last Modified in 03/28/23 | 186 | 49 | 49 | 0 | 0 | 0 | 0 | 7 |
[20] † Indosaurus Last Modified in 03/28/23 | 221 | 14 | 14 | 0 | 0 | 0 | 0 | 7 |
[21] † Kryptops Last Modified in 03/28/23 | 222 | 13 | 13 | 0 | 0 | 0 | 0 | 7 |
[22] † Laevisuchus Last Modified in 03/28/23 | 220 | 16 | 15 | 0 | 0 | 0 | 0 | 7 |
[23] † Limusaurus Last Modified in 03/28/23 | 114 | 123 | 119 | 0 | 2 | 0 | 0 | 7 |
[24] † Majungasaurus Last Modified in 03/28/23 | 18 | 219 | 217 | 0 | 0 | 0 | 0 | 7 |
[25] † Masiakasaurus Last Modified in 03/28/23 | 60 | 176 | 175 | 0 | 0 | 0 | 0 | 7 |
[26] † Noasaurus Last Modified in 03/28/23 | 198 | 38 | 37 | 0 | 0 | 0 | 0 | 7 |
[27] † Pycnonemosaurus Last Modified in 03/28/23 | 222 | 13 | 13 | 0 | 0 | 0 | 0 | 7 |
[28] † Rahiolisaurus Last Modified in 03/28/23 | 171 | 65 | 64 | 0 | 0 | 0 | 0 | 7 |
[29] † Rajasaurus Last Modified in 03/28/23 | 172 | 63 | 63 | 0 | 0 | 0 | 0 | 7 |
[30] † Rugops Last Modified in 03/28/23 | 191 | 44 | 44 | 0 | 0 | 0 | 0 | 7 |
[31] † Skorpiovenator Last Modified in 03/28/23 | 141 | 95 | 94 | 0 | 0 | 0 | 0 | 7 |
[32] † MNN tig6 Last Modified in 03/28/23 | 200 | 36 | 35 | 0 | 0 | 0 | 0 | 7 |
[33] † Spectrovenator Last Modified in 03/28/23 | 106 | 133 | 129 | 0 | 0 | 0 | 0 | 7 |
[34] † Velocisaurus Last Modified in 03/28/23 | 209 | 26 | 26 | 0 | 0 | 0 | 0 | 7 |
[35] † Vespersaurus Last Modified in 03/28/23 | 152 | 85 | 83 | 0 | 0 | 0 | 0 | 7 |
[36] † Viavenator Last Modified in 03/28/23 | 154 | 81 | 81 | 0 | 0 | 0 | 0 | 7 |
[37] † MPCN pv 69 Last Modified in 03/28/23 | 214 | 21 | 21 | 0 | 0 | 0 | 0 | 7 |
[38] † Afromimus Last Modified in 03/28/23 | 225 | 10 | 10 | 0 | 0 | 0 | 0 | 7 |
[39] † Xenotarsosaurus Last Modified in 03/28/23 | 206 | 30 | 29 | 0 | 0 | 0 | 0 | 7 |
[40] † Llukalkan Last Modified in 03/28/23 | 172 | 63 | 63 | 0 | 0 | 0 | 0 | 7 |
[41] † Niebla Last Modified in 03/28/23 | 209 | 26 | 26 | 0 | 0 | 0 | 0 | 7 |
[42] † Quilmesaurus Last Modified in 03/28/23 | 225 | 11 | 10 | 0 | 0 | 0 | 0 | 7 |
[43] † Elemgasem Last Modified in 03/28/23 | 220 | 15 | 15 | 0 | 0 | 0 | 0 | 7 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 5467 | |
Project overview | 387 | |
Matrix views | 269 | Matrix landing page (217 views); Elemgasem nubilus gen. et sp. nov., a new brachyrostran abelisaurid (Theropoda, Ceratosauria) from the Portezuelo Formation (Upper Cretaceous) of Patagonia, Argentina (52 views); |
Media views | 975 | Media search (833 views); M846650 (142 views); |
Documents list | 197 | |
Views for media list | 465 | |
Taxon list | 2553 | |
Specimen list | 460 | |
Bibliography | 161 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 11 | |
Matrix downloads | 4 | Elemgasem nubilus gen. et sp. nov., a new brachyrostran abelisaurid (Theropoda, Ceratosauria) from the Portezuelo Formation (Upper Cretaceous) of Patagonia, Argentina (4 downloads); |
Project downloads | 6 | |
Document downloads | 1 | Elemgasem nubilus gen. et sp. nov., a new brachyrostran abelisaurid (Theropoda, Ceratosauria) from the Portezuelo Formation (Upper Cretaceous) of Patagonia, Argentina (1 download); |