Project 4581: K. Poole. 2022. Phylogeny of iguanodontian dinosaurs and the evolution of quadrupedality. Palaeontologia Electronica. 25 (3):1-65.
Abstract
Iguanodontians are a large and biogeographically widespread group of dinosaurs, known from every modern continent, with a temporal range from the Late Jurassic through the Late Cretaceous. While the nested hadrosauroids have been studied extensively, the phylogeny of non-hadrosauroid iguanodontians remains less clear. This study presents a character matrix with 323 characters, and both parsimony and time-calibrated Bayesian analyses. While these result in different topologies, they both recover a Thescelosauridae outside of Iguanodontia. Within Iguanodontia, they both recover Muttaburrasaurus and Tenontosaurus as sister taxa to Rhabdodontidae, with a larger group of Gondwanan Rhabdodontoidea (nomen cladi novum) in the Bayesian analysis. A small Dryosauridae forms the sister group to Ankylopollexia, which has Uteodon and Camptosaurus as the most basally branching taxa. Within Styracosterna two distinct clades are recovered: Iguanodontidae, and a group of taxa with robust forelimbs. The holotype of Mantellisaurus is sister to “Dollodon”, supporting the hypothesis that these taxa are synonymous.The “hatchet-shaped” sternal thought to be a synapomorphy of Styracosterna occurs in two taxa recovered outside that group: Macrogryphosaurus and the unnamed taxon from the Kirkwood Formation of South Africa. Characters associated with quadrupedality are mapped on the phylogeny, indicating a transition from bipedality to quadrupedality occurred in a stepwise manner at the base of Ankylopollexia. Based on synapomorphies of the groups, the major innovations in Ankylopollexia were postcranial, while those of hadrosauroids were centered on dentition and the dentaries. There is a clear faunal succession from the Late Jurassic to Early Cretaceous non-hadrosauroid ankylopollexians to the Late Cretaceous hadrosauroids.Read the article »
Article DOI: 10.26879/702
Project DOI: 10.7934/P4581, http://dx.doi.org/10.7934/P4581
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 11520 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 323 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 706 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:323/0 |
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MorphoBank Project 4581
MorphoBank Project 4581
- Creation Date:
03 March 2023 - Publication Date:
14 March 2023 - Matrix downloads: 45
Authors' Institutions
- New York Institute of Technology
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 0 | 5 | 5 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Karen Poole Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29192' (72 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Eocursor Taxon name last Modified on 03/14/23 | 239 | 68 | 68 | 0 | 16 | 0 | 0 | 2 |
[2] † Lesothosaurus Taxon name last Modified on 03/14/23 | 122 | 177 | 177 | 0 | 24 | 0 | 0 | 2 |
[3] † Stormbergia Taxon name last Modified on 03/14/23 | 232 | 89 | 87 | 0 | 4 | 0 | 0 | 2 |
[4] † Agilisaurus Taxon name last Modified on 03/14/23 | 119 | 185 | 185 | 0 | 19 | 0 | 0 | 2 |
[5] † Hexinlusaurus Taxon name last Modified on 03/14/23 | 152 | 165 | 164 | 0 | 7 | 0 | 0 | 2 |
[6] † Shishugou taxon Taxon name last Modified on 03/14/23 | 61 | 239 | 238 | 0 | 24 | 0 | 0 | 2 |
[7] † Othnielosaurus Taxon name last Modified on 03/14/23 | 203 | 111 | 111 | 0 | 9 | 0 | 0 | 2 |
[8] † Hypsilophodon Taxon name last Modified on 03/14/23 | 24 | 293 | 285 | 0 | 14 | 0 | 0 | 2 |
[9] † Jeholosaurus Taxon name last Modified on 03/14/23 | 91 | 218 | 216 | 0 | 16 | 0 | 0 | 2 |
[10] † Haya Taxon name last Modified on 03/14/23 | 69 | 232 | 232 | 0 | 22 | 0 | 0 | 2 |
[11] † Orodromeus Taxon name last Modified on 03/14/23 | 63 | 248 | 242 | 0 | 18 | 0 | 0 | 2 |
[12] † Oryctodromeus Taxon name last Modified on 03/14/23 | 265 | 57 | 56 | 0 | 2 | 0 | 0 | 2 |
[13] † Zephyrosaurus Taxon name last Modified on 03/14/23 | 247 | 74 | 74 | 0 | 2 | 0 | 0 | 2 |
[14] † Thescelosaurus infernalis Taxon name last Modified on 03/14/23 | 130 | 179 | 177 | 0 | 16 | 0 | 0 | 2 |
[15] † Thescelosaurus neglectus Taxon name last Modified on 03/14/23 | 53 | 256 | 255 | 0 | 15 | 0 | 0 | 2 |
[16] † Parksosaurus Taxon name last Modified on 03/14/23 | 177 | 135 | 135 | 0 | 11 | 0 | 0 | 2 |
[17] † Leaellynasaura Taxon name last Modified on 03/14/23 | 224 | 94 | 94 | 0 | 5 | 0 | 0 | 2 |
[18] † Gasparinisaura Taxon name last Modified on 03/14/23 | 107 | 205 | 204 | 0 | 12 | 0 | 0 | 2 |
[19] † Anabisetia Taxon name last Modified on 03/14/23 | 169 | 145 | 145 | 0 | 9 | 0 | 0 | 2 |
[20] † Macrogryphosaurus Taxon name last Modified on 03/14/23 | 264 | 56 | 56 | 0 | 3 | 0 | 0 | 2 |
[21] † Trinisaura Taxon name last Modified on 03/14/23 | 278 | 43 | 43 | 0 | 2 | 0 | 0 | 2 |
[22] † Talenkauen Taxon name last Modified on 03/14/23 | 167 | 151 | 149 | 0 | 7 | 0 | 0 | 2 |
[23] † Tenontosaurus dossi Taxon name last Modified on 03/14/23 | 109 | 202 | 201 | 0 | 13 | 0 | 0 | 2 |
[24] † Tenontosaurus tilletti Taxon name last Modified on 03/14/23 | 20 | 292 | 283 | 0 | 20 | 0 | 0 | 2 |
[25] † Muttaburrasaurus Taxon name last Modified on 03/14/23 | 178 | 142 | 141 | 0 | 4 | 0 | 0 | 2 |
[26] † Atlascopcosaurus Taxon name last Modified on 03/14/23 | 284 | 38 | 37 | 0 | 2 | 0 | 0 | 2 |
[27] † Kangnasaurus Taxon name last Modified on 03/14/23 | 287 | 36 | 36 | 0 | 0 | 0 | 0 | 2 |
[28] † Dryosaurus Taxon name last Modified on 03/14/23 | 35 | 276 | 273 | 0 | 15 | 0 | 0 | 2 |
[29] † Dysalotosaurus Taxon name last Modified on 03/14/23 | 36 | 281 | 273 | 0 | 14 | 0 | 0 | 2 |
[30] † Kirkwood taxon Taxon name last Modified on 03/14/23 | 173 | 144 | 142 | 0 | 8 | 0 | 0 | 2 |
[31] † Valdosaurus Taxon name last Modified on 03/14/23 | 262 | 58 | 57 | 0 | 4 | 0 | 0 | 2 |
[32] † Rhabdodon Taxon name last Modified on 03/14/23 | 124 | 198 | 186 | 0 | 13 | 0 | 0 | 2 |
[33] † Zalmoxes robustus Taxon name last Modified on 03/14/23 | 91 | 226 | 220 | 0 | 12 | 0 | 0 | 2 |
[34] † Zalmoxes shqiperorum Taxon name last Modified on 03/14/23 | 235 | 86 | 85 | 0 | 3 | 0 | 0 | 2 |
[35] † Cumnoria prestwichii Taxon name last Modified on 03/14/23 | 207 | 111 | 111 | 0 | 5 | 0 | 0 | 2 |
[36] † Owenodon Taxon name last Modified on 03/14/23 | 287 | 34 | 34 | 0 | 2 | 0 | 0 | 2 |
[37] † Uteodon Taxon name last Modified on 03/14/23 | 175 | 145 | 144 | 0 | 4 | 0 | 0 | 2 |
[38] † Camptosaurus Taxon name last Modified on 03/14/23 | 31 | 288 | 280 | 0 | 12 | 0 | 0 | 2 |
[39] † Lurdusaurus Taxon name last Modified on 03/14/23 | 169 | 150 | 149 | 0 | 5 | 0 | 0 | 2 |
[40] † Theiophytalia Taxon name last Modified on 03/14/23 | 252 | 67 | 67 | 0 | 4 | 0 | 0 | 2 |
[41] † Dakotadon Taxon name last Modified on 03/14/23 | 224 | 95 | 94 | 0 | 5 | 0 | 0 | 2 |
[42] † Cedrorestes Taxon name last Modified on 03/14/23 | 297 | 26 | 26 | 0 | 0 | 0 | 0 | 2 |
[43] † Planicoxa Taxon name last Modified on 03/14/23 | 267 | 57 | 56 | 0 | 0 | 0 | 0 | 2 |
[44] † Hippodraco Taxon name last Modified on 03/14/23 | 236 | 88 | 87 | 0 | 0 | 0 | 0 | 2 |
[45] † Iguanacolossus Taxon name last Modified on 03/14/23 | 255 | 61 | 60 | 0 | 8 | 0 | 0 | 2 |
[46] † Lanzhousaurus Taxon name last Modified on 03/14/23 | 253 | 67 | 67 | 0 | 3 | 0 | 0 | 2 |
[47] † Barilium Taxon name last Modified on 03/14/23 | 221 | 101 | 101 | 0 | 1 | 0 | 0 | 2 |
[48] † Hypselospinus Taxon name last Modified on 03/14/23 | 208 | 116 | 114 | 0 | 1 | 0 | 0 | 2 |
[49] † Mantellisaurus Taxon name last Modified on 03/14/23 | 20 | 302 | 297 | 0 | 6 | 0 | 0 | 2 |
[50] † Iguanodon Taxon name last Modified on 03/14/23 | 18 | 304 | 298 | 0 | 7 | 0 | 0 | 2 |
[51] † Ouranosaurus Taxon name last Modified on 03/14/23 | 53 | 266 | 265 | 0 | 5 | 0 | 0 | 2 |
[52] † Proa Taxon name last Modified on 03/14/23 | 195 | 121 | 120 | 0 | 8 | 0 | 0 | 2 |
[53] † Altirhinus Taxon name last Modified on 03/14/23 | 120 | 191 | 190 | 0 | 13 | 0 | 0 | 2 |
[54] † Xuwulong Taxon name last Modified on 03/14/23 | 186 | 133 | 133 | 0 | 4 | 0 | 0 | 2 |
[55] † Jeyawati Taxon name last Modified on 03/14/23 | 262 | 61 | 61 | 0 | 0 | 0 | 0 | 2 |
[56] † Equijubus Taxon name last Modified on 03/14/23 | 180 | 137 | 137 | 0 | 6 | 0 | 0 | 2 |
[57] † Fukuisaurus Taxon name last Modified on 03/14/23 | 242 | 77 | 77 | 0 | 4 | 0 | 0 | 2 |
[58] † Bolong Taxon name last Modified on 03/14/23 | 176 | 139 | 138 | 0 | 9 | 0 | 0 | 2 |
[59] † Jinzhousaurus Taxon name last Modified on 03/14/23 | 108 | 205 | 205 | 0 | 10 | 0 | 0 | 2 |
[60] † Batyrosaurus Taxon name last Modified on 03/14/23 | 241 | 80 | 77 | 0 | 5 | 0 | 0 | 2 |
[61] † Probactrosaurus Taxon name last Modified on 03/14/23 | 122 | 197 | 195 | 0 | 6 | 0 | 0 | 2 |
[62] † Eolambia Taxon name last Modified on 03/14/23 | 85 | 232 | 228 | 0 | 10 | 0 | 0 | 2 |
[63] † Protohadros Taxon name last Modified on 03/14/23 | 166 | 147 | 147 | 0 | 10 | 0 | 0 | 2 |
[64] † Shuangmiaosaurus Taxon name last Modified on 03/14/23 | 282 | 37 | 37 | 0 | 4 | 0 | 0 | 2 |
[65] † Levnesovia Taxon name last Modified on 03/14/23 | 242 | 79 | 79 | 0 | 2 | 0 | 0 | 2 |
[66] † Tethyshadros Taxon name last Modified on 03/14/23 | 114 | 182 | 181 | 0 | 28 | 0 | 0 | 2 |
[67] † Bactrosaurus Taxon name last Modified on 03/14/23 | 95 | 221 | 219 | 0 | 9 | 0 | 0 | 2 |
[68] † Gilmoreosaurus Taxon name last Modified on 03/14/23 | 180 | 144 | 140 | 0 | 3 | 0 | 0 | 2 |
[69] † Telmatosaurus Taxon name last Modified on 03/14/23 | 195 | 120 | 118 | 0 | 10 | 0 | 0 | 2 |
[70] † Maiasaura Taxon name last Modified on 03/14/23 | 57 | 234 | 233 | 0 | 33 | 0 | 0 | 2 |
[71] † Edmontosaurus Taxon name last Modified on 03/14/23 | 88 | 212 | 211 | 0 | 24 | 0 | 0 | 2 |
[72] † Hypacrosaurus Taxon name last Modified on 03/14/23 | 61 | 237 | 236 | 0 | 26 | 0 | 0 | 2 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 59 | |
Matrix downloads | 45 | Iguanodontian matrix (45 downloads); |
Project downloads | 11 | |
Document downloads | 3 | Iguanodontian matrix from supplemental material (2 downloads); Iguanodontian matrix, curated by MorphoBank (1 download); |