Project 5214: A. B. Smith, S. Zamora. 2009. Rooting phylogenies of problematic fossil taxa; a case study using cinctans (stem-group echinoderms). Palaeontology. 52 (4):803-821.
Abstract
Extinct clades whose higher-level relationships are problematic or disputed pose a particular problem for phylogenetic analysis because of the difficulty of establishing a convincing root. Cinctans are a problematic group of primitive preradiate echinoderms whose morphology is so distinct that few characters can be usefully homologized with any other group. Here we use a two stage approach, first constructing an unrooted network using the totality of phylogenetically informative characters in which individual plates are homologized, and then determining the root position with a much smaller set of recast characters that can be polarized by outgroup and/or ontogenetic criteria. Furthermore, when rooting is based on stratigraphic criteria the same two major derived clades are identified, although basal relationships are somewhat different. We contend that the congruence of results obtained using our various approaches provides confidence that we have correctly rooted the cladogram. A revised taxonomy for Cincta is presented.Read the article »
Article DOI: 10.1111/j.1475-4983.2009.00880.x
Project DOI: 10.7934/P5214, http://dx.doi.org/10.7934/P5214
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 1236 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 60 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 155 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:60/0 |
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MorphoBank Project 5214
MorphoBank Project 5214
- Creation Date:
21 April 2024 - Publication Date:
29 April 2024 - Project views: 476
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Shreya Jariwala Project Administrator | 27 | 2 | 2 | 60 | 0 | 0 | 1236 (1205, 0, 31) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29793' (27 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Ctenocystis Last Modified in 04/21/24 | 31 | 29 | 29 | 0 | 0 | 0 | 0 | 1 |
[2] † Gyrocystis platessa Last Modified in 04/21/24 | 0 | 59 | 58 | 0 | 2 | 0 | 0 | 1 |
[3] † Gyrocystis testudiformis Last Modified in 04/21/24 | 0 | 58 | 58 | 0 | 2 | 0 | 0 | 1 |
[4] † Gyrocystis cruzae Last Modified in 04/21/24 | 10 | 49 | 49 | 0 | 1 | 0 | 0 | 1 |
[5] † Gyrocystis badulesiensis Last Modified in 04/21/24 | 1 | 57 | 57 | 0 | 2 | 0 | 0 | 1 |
[6] † Gyrocystis erecta Last Modified in 04/21/24 | 24 | 34 | 34 | 0 | 2 | 0 | 0 | 1 |
[7] † Progyrocystis disjuncta Last Modified in 04/21/24 | 5 | 53 | 53 | 0 | 2 | 0 | 0 | 1 |
[8] † Protocinctus mansillaensis Last Modified in 04/21/24 | 7 | 51 | 51 | 0 | 2 | 0 | 0 | 1 |
[9] † Elliptocinctus barrandei Last Modified in 04/21/24 | 2 | 63 | 58 | 0 | 0 | 0 | 0 | 1 |
[10] † Elliptocinctus vizcainoi Last Modified in 04/21/24 | 10 | 49 | 49 | 0 | 1 | 0 | 0 | 1 |
[11] † Sucocystis theronensis Last Modified in 04/21/24 | 3 | 60 | 57 | 0 | 0 | 0 | 0 | 1 |
[12] † Sucocystis bretoni Last Modified in 04/21/24 | 5 | 56 | 55 | 0 | 0 | 0 | 0 | 1 |
[13] † Lignanicystis barriosensis Last Modified in 04/21/24 | 1 | 59 | 59 | 0 | 0 | 0 | 0 | 1 |
[14] † Undatacinctus undata Last Modified in 04/21/24 | 12 | 46 | 46 | 0 | 2 | 0 | 0 | 1 |
[15] † Sucocystis acrofera Last Modified in 04/21/24 | 7 | 52 | 52 | 0 | 1 | 0 | 0 | 1 |
[16] † Undatacinctus quadricornuta Last Modified in 04/21/24 | 8 | 50 | 50 | 0 | 2 | 0 | 0 | 1 |
[17] † Undatacinctus melendezi Last Modified in 04/21/24 | 10 | 48 | 48 | 0 | 2 | 0 | 0 | 1 |
[18] † Asturicystis jaekeli Last Modified in 04/21/24 | 3 | 55 | 55 | 0 | 2 | 0 | 0 | 1 |
[19] † Sotocinctus ubaghsi Last Modified in 04/21/24 | 3 | 56 | 55 | 0 | 2 | 0 | 0 | 1 |
[20] † Trochocystites bohemicus Last Modified in 04/21/24 | 1 | 62 | 58 | 0 | 1 | 0 | 0 | 1 |
[21] † Trochocystoides parvus Last Modified in 04/21/24 | 5 | 53 | 53 | 0 | 2 | 0 | 0 | 1 |
[22] † Ludwigicinctus truncatus Last Modified in 04/21/24 | 9 | 48 | 48 | 0 | 3 | 0 | 0 | 1 |
[23] † Graciacystis ambigua Last Modified in 04/21/24 | 4 | 58 | 56 | 0 | 0 | 0 | 0 | 1 |
[24] † Asturicystis havliceki Last Modified in 04/21/24 | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[25] † Nelegerocystis ivantzovi Last Modified in 04/21/24 | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[26] † Rozanovicystis triangularis Last Modified in 04/21/24 | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[27] † Davidocinctus pembrokensis Last Modified in 04/21/24 | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 476 | |
Matrix views | 29 | Matrix landing page (25 views); Smith and Zamora 2009 (4 views); |
Project overview | 34 | |
Documents list | 24 | |
Media views | 85 | Media search (66 views); M903436 (10 views); M903435 (9 views); |
Bibliography | 20 | |
Specimen list | 74 | |
Taxon list | 179 | |
Views for media list | 31 |