Project 4431: X. Xu, Q. Tan, Y. Gao, Z. Bao, Z. Yin, B. Guo, J. Wang, L. Tan, Y. Zhang, H. Xing. 2018. A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia. Science Bulletin. 63 (9):556-563.
Abstract
A presumably mostly quadrupedal ankylopollexian iguanodontian, Bayannurosaurus perfectus gen. et sp. nov., is reported here, and is represented by an excellently well-preserved skeleton from the Lower Cretaceous Bayingebi Formation of Inner Mongolia, China. The diagnosis of the taxon includes several autapomorphies, notably a dorsally directed, strap-like posterodorsal process of the jugal and a horizontally oriented preacetabular process of the ilium. The nearly complete caudal series retains eight posterior-most caudals with procoelous, trapezoidal centra in dorsal view, and the last three caudals are fully fused. The discovery of B. perfectus opens a critical new window on the early evolution and intercontinental dispersal of Iguanodontia. The skeleton displays a transitional morphology between non-hadrosauriform ankylopollexians and Hadrosauriformes. A phylogenetic analysis indicates that Bayannurosaurus is positioned higher on the tree than Hypselospinus, but below Ouranosaurus just outside of Hadrosauriformes. The tree topology of Iguanodontia with temporal and spatial constraints reveals a possible biogeographic scenario supported by the statistical dispersal-vicariance analysis: around the J/K boundary, non-hadrosauriform ankylopollexians experienced multiple dispersal events from Europe to Asia, accompanying the coeval fall of the global sea level.Read the article »
Article DOI: 10.1016/j.scib.2018.03.016
Project DOI: 10.7934/P4431, http://dx.doi.org/10.7934/P4431
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 3669 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 123 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 318 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:123/0 |
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MorphoBank Project 4431
MorphoBank Project 4431
- Creation Date:
04 October 2022 - Publication Date:
05 October 2022 - Project views: 6169
- Matrix downloads: 1
Authors' Institutions
- Beijing Museum of Natural History, Beijing
- Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), CAS
- Inner Mongolia Museum of Natural History
- Bureau of Land and Resources of Bayannur
- Long Hao Institute of Geology and Paleontology
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Brooke Long-Fox Project Administrator | 40 | 1 | 1 | 123 | 0 | 0 | 3669 (3669, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29008' (40 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Lesothosaurus diagnosticus Last Modified in 10/05/22 | 5 | 118 | 118 | 0 | 0 | 0 | 0 | 1 |
[2] † Hypsilophodon foxii Last Modified in 10/05/22 | 0 | 123 | 123 | 0 | 0 | 0 | 0 | 1 |
[3] † Zalmoxes robustus Last Modified in 10/05/22 | 24 | 99 | 99 | 0 | 0 | 0 | 0 | 1 |
[4] † Zalmoxes shqiperorum Last Modified in 10/05/22 | 47 | 76 | 76 | 0 | 0 | 0 | 0 | 1 |
[5] † Rhabdodon spp Last Modified in 10/05/22 | 33 | 91 | 90 | 0 | 0 | 0 | 0 | 1 |
[6] † Tenontosaurus tilletti Last Modified in 10/05/22 | 0 | 123 | 123 | 0 | 0 | 0 | 0 | 1 |
[7] † Dryosaurus altus Last Modified in 10/05/22 | 0 | 123 | 123 | 0 | 0 | 0 | 0 | 1 |
[8] † Dysalotosaurus lettowvorbecki Last Modified in 10/05/22 | 9 | 114 | 114 | 0 | 0 | 0 | 0 | 1 |
[9] † Valdosaurus canaliculatus Last Modified in 10/05/22 | 98 | 26 | 25 | 0 | 0 | 0 | 0 | 1 |
[10] † Camptosaurus dispar Last Modified in 10/05/22 | 2 | 122 | 121 | 0 | 0 | 0 | 0 | 1 |
[11] † Uteodon aphanoecetes Last Modified in 10/05/22 | 55 | 68 | 68 | 0 | 0 | 0 | 0 | 1 |
[12] † Dakotadon lakotaensis Last Modified in 10/05/22 | 71 | 52 | 52 | 0 | 0 | 0 | 0 | 1 |
[13] † Hippodraco scutodens Last Modified in 10/05/22 | 64 | 59 | 59 | 0 | 0 | 0 | 0 | 1 |
[14] † Iguanacolossus fortis Last Modified in 10/05/22 | 77 | 46 | 46 | 0 | 0 | 0 | 0 | 1 |
[15] † Proa valdearinnoensis Last Modified in 10/05/22 | 42 | 81 | 81 | 0 | 0 | 0 | 0 | 1 |
[16] † Lanzhousaurus magnidens Last Modified in 10/05/22 | 87 | 36 | 36 | 0 | 0 | 0 | 0 | 1 |
[17] † Hypselospinus fittoni Last Modified in 10/05/22 | 64 | 59 | 59 | 0 | 0 | 0 | 0 | 1 |
[18] † Bayannurosaurus perfectus Last Modified in 10/05/22 | 14 | 109 | 109 | 0 | 0 | 0 | 0 | 1 |
[19] † Ouranosaurus nigeriensis Last Modified in 10/05/22 | 4 | 119 | 119 | 0 | 0 | 0 | 0 | 1 |
[20] † Barilium dawsoni Last Modified in 10/05/22 | 68 | 55 | 55 | 0 | 0 | 0 | 0 | 1 |
[21] † Mantellisaurus atherfieldensis Last Modified in 10/05/22 | 0 | 124 | 123 | 0 | 0 | 0 | 0 | 1 |
[22] † Iguanodon bernissartensis Last Modified in 10/05/22 | 0 | 124 | 123 | 0 | 0 | 0 | 0 | 1 |
[23] † Altirhinus kurzanovi Last Modified in 10/05/22 | 15 | 108 | 108 | 0 | 0 | 0 | 0 | 1 |
[24] † Bolong yixianensis Last Modified in 10/05/22 | 21 | 102 | 102 | 0 | 0 | 0 | 0 | 1 |
[25] † Jinzhousaurus yangi Last Modified in 10/05/22 | 8 | 115 | 115 | 0 | 0 | 0 | 0 | 1 |
[26] † Equijubus normani Last Modified in 10/05/22 | 41 | 82 | 82 | 0 | 0 | 0 | 0 | 1 |
[27] † Sirinthorna khoratensis Last Modified in 10/05/22 | 58 | 65 | 65 | 0 | 0 | 0 | 0 | 1 |
[28] † Batyrosaurus rozhdestvenskyi Last Modified in 10/05/22 | 73 | 50 | 50 | 0 | 0 | 0 | 0 | 1 |
[29] † Penelopognathus weishampeli Last Modified in 10/05/22 | 105 | 18 | 18 | 0 | 0 | 0 | 0 | 1 |
[30] † Probactrosaurus gobiensis Last Modified in 10/05/22 | 12 | 113 | 111 | 0 | 0 | 0 | 0 | 1 |
[31] † Eolambia caroljonesa Last Modified in 10/05/22 | 12 | 112 | 111 | 0 | 0 | 0 | 0 | 1 |
[32] † Levnesovia transoxiana Last Modified in 10/05/22 | 58 | 65 | 65 | 0 | 0 | 0 | 0 | 1 |
[33] † Bactrosaurus johnsoni Last Modified in 10/05/22 | 6 | 118 | 117 | 0 | 0 | 0 | 0 | 1 |
[34] † Gilmoreosaurus mongoliensis Last Modified in 10/05/22 | 37 | 89 | 86 | 0 | 0 | 0 | 0 | 1 |
[35] † Tethyshadros insularis Last Modified in 10/05/22 | 9 | 114 | 114 | 0 | 0 | 0 | 0 | 1 |
[36] † Telmatosaurus transsylvanicus Last Modified in 10/05/22 | 45 | 78 | 78 | 0 | 0 | 0 | 0 | 1 |
[37] † Hypacrosaurus altispinus Last Modified in 10/05/22 | 0 | 123 | 123 | 0 | 0 | 0 | 0 | 1 |
[38] † Lambeosaurus lambei Last Modified in 10/05/22 | 0 | 123 | 123 | 0 | 0 | 0 | 0 | 1 |
[39] † Saurolophus osborni Last Modified in 10/05/22 | 0 | 123 | 123 | 0 | 0 | 0 | 0 | 1 |
[40] † Edmontosaurus regalis Last Modified in 10/05/22 | 0 | 124 | 123 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 6169 | |
Project overview | 323 | |
Matrix views | 232 | Matrix landing page (212 views); Matrix from Xing et. al 2018 (20 views); |
Media views | 981 | Media search (829 views); M847682 (152 views); |
Documents list | 215 | |
Bibliography | 931 | |
Views for media list | 282 | |
Specimen list | 487 | |
Taxon list | 2718 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 4 | |
Project downloads | 3 | |
Matrix downloads | 1 | Matrix from Xing et. al 2018 (1 download); |