Project 1213: M. L. Turner, L. A. Tsuji, O. Ide, C. A. Sidor. 2015. The vertebrate fauna of the upper Permian of Niger—IX. The appendicular skeleton of Bunostegos akokanensis (Parareptilia: Pareiasauria). Journal of Vertebrate Paleontology. 35 (6):e994746.
Abstract
ABSTRACT—Pareiasaurs were a group of herbivorous reptiles that lived during the middle to late Permian (~265–252 Ma) in what is modern-day Europe, Asia, South America, and Africa. Field work in the Moradi Formation of northern Niger has produced multiple elements of the appendicular skeleton of the pareiasaur Bunostegos akokanensis. The considerable size disparity and morphological variation among the elements suggest that they represent ontogenetic stages ranging from relatively juvenile to adult. Here we present the first description of the scapulocoracoid, humerus, radius, ulna, pelvis, and femur of Bunostegos as well as some of the first ontogenetic data for postcranial osteology in pareiasaurs. As with the skull, numerous postcranial autapomorphies characterize Bunostegos, including laterally originating acromion process of the scapula; radius and ulna with continuous articular surface on humerus; paired crests on the olecranon process; ulna longer than humerus; pinched posterior margin of the acetabular rim; robust pelvic symphysis extending the length of the puboischiatic plate; lack of a distinct postaxial flange of the femur; and an elaborated femoral lateral condyle wrapping over the medial condyle. We incorporated data from the appendicular skeleton of Bunostegos into a revised phylogenetic analysis of pareiasaur relationships. The results of this analysis corroborate previous cranial analyses that place Bunostegos between Guadalupian taxa and the Lopingian velosaur subclade. Interestingly, several aspects of its postcranial anatomy suggest that Bunostegos possessed relatively upright forelimb posture, which would be unique among pareiasaurs and possibly Permian amniotes as a whole.Read the article »
Article DOI: 10.1080/02724634.2014.994746
Project DOI: 10.7934/P1213, http://dx.doi.org/10.7934/P1213
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 2387 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 139 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 301 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:139/0 |
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MorphoBank Project 1213
MorphoBank Project 1213
- Creation Date:
10 June 2014 - Publication Date:
22 January 2016 - Project views: 25700
- Matrix downloads: 7
This research
supported by
Authors' Institutions
- Burke Museum of Natural History and Culture, Seattle
- University of Washington
- Royal Ontario Museum
- Université Abdou Moumouni (formerly University of Niamey)
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Morgan Turner Project Administrator | 29 | 1 | 1 | 139 | 0 | 0 | 2387 (2387, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M23670' (29 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Millerettidae Last Modified in 12/01/15 | 25 | 116 | 114 | 0 | 0 | 0 | 0 | 1 |
[2] † Owenetta Last Modified in 12/01/15 | 36 | 103 | 103 | 0 | 0 | 0 | 0 | 1 |
[3] † Bashkyroleter bashkyricus Last Modified in 12/01/15 | 90 | 49 | 49 | 0 | 0 | 0 | 0 | 1 |
[4] † Bashkyroleter mesensis Last Modified in 12/01/15 | 86 | 54 | 53 | 0 | 0 | 0 | 0 | 1 |
[5] † Rhipaeosaurus Last Modified in 12/01/15 | 96 | 43 | 43 | 0 | 0 | 0 | 0 | 1 |
[6] † Nycteroleter Last Modified in 12/01/15 | 80 | 59 | 59 | 0 | 0 | 0 | 0 | 1 |
[7] † Emeroleter Last Modified in 12/01/15 | 56 | 83 | 83 | 0 | 0 | 0 | 0 | 1 |
[8] † Macroleter Last Modified in 12/01/15 | 38 | 101 | 101 | 0 | 0 | 0 | 0 | 1 |
[9] † Bradysaurus baini Last Modified in 12/01/15 | 11 | 128 | 128 | 0 | 0 | 0 | 0 | 1 |
[10] † Bradysaurus seeleyi Last Modified in 12/01/15 | 5 | 134 | 134 | 0 | 0 | 0 | 0 | 1 |
[11] † Nochelesaurus Last Modified in 12/01/15 | 43 | 96 | 96 | 0 | 0 | 0 | 0 | 1 |
[12] † Embrithosaurus Last Modified in 12/01/15 | 8 | 131 | 131 | 0 | 0 | 0 | 0 | 1 |
[13] † Deltavjatia Last Modified in 12/01/15 | 12 | 127 | 127 | 0 | 0 | 0 | 0 | 1 |
[14] † Shansisaurus Last Modified in 12/01/15 | 109 | 31 | 30 | 0 | 0 | 0 | 0 | 1 |
[15] † Shihtienfenia Last Modified in 12/01/15 | 117 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[16] † Honania Last Modified in 12/01/15 | 99 | 42 | 40 | 0 | 0 | 0 | 0 | 1 |
[17] † Pareiasuchus peringueyi Last Modified in 12/01/15 | 12 | 127 | 127 | 0 | 0 | 0 | 0 | 1 |
[18] † Pareiasuchus nasicornis Last Modified in 12/01/15 | 26 | 113 | 113 | 0 | 0 | 0 | 0 | 1 |
[19] † Pareiasaurus Last Modified in 12/01/15 | 22 | 117 | 117 | 0 | 0 | 0 | 0 | 1 |
[20] † Scutosaurus Last Modified in 12/01/15 | 7 | 132 | 132 | 0 | 0 | 0 | 0 | 1 |
[21] † Parasaurus Last Modified in 12/01/15 | 101 | 38 | 38 | 0 | 0 | 0 | 0 | 1 |
[22] † Elginia Last Modified in 12/01/15 | 58 | 81 | 81 | 0 | 0 | 0 | 0 | 1 |
[23] † Provelosaurus Last Modified in 12/01/15 | 70 | 69 | 69 | 0 | 0 | 0 | 0 | 1 |
[24] † Anthodon Last Modified in 12/01/15 | 27 | 112 | 112 | 0 | 0 | 0 | 0 | 1 |
[25] † Pumiliopareia Last Modified in 12/01/15 | 74 | 65 | 65 | 0 | 0 | 0 | 0 | 1 |
[26] † Nanoparia Last Modified in 12/01/15 | 84 | 55 | 55 | 0 | 0 | 0 | 0 | 1 |
[27] † Arganaceras Last Modified in 12/01/15 | 82 | 57 | 57 | 0 | 0 | 0 | 0 | 1 |
[28] † Obirkovia Last Modified in 12/01/15 | 135 | 4 | 4 | 0 | 0 | 0 | 0 | 1 |
[29] † Bunostegos akokanensis Last Modified in 12/01/15 | 41 | 98 | 98 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 25700 | |
Project overview | 3140 | |
Matrix views | 2370 | Matrix landing page (2120 views); Appendix S2 (250 views); |
Media views | 5062 | Media search (4332 views); M406202 (730 views); |
Specimen list | 2393 | |
Taxon list | 9919 | |
Bibliography | 1243 | |
Documents list | 1567 | |
Views for media list | 6 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 268 | |
Project downloads | 260 | |
Matrix downloads | 7 | Appendix S2 (7 downloads); |
Document downloads | 1 | Appendix S1 (1 download); |