Project 4763: C. D. Sumrall, F. J. Gahn. 2006. Morphological and systematic reinterpretation of two enigmatic edrioasteroids (Echinodermata) from Canada. Canadian Journal of Earth Sciences. 43 (4):497-507.
Abstract
Reinterpretation of two enigmatic Canadian edrioasteroids, Thresherodiscus ramosus Foerste, 1914 from the Upper Ordovician Verulam Formation of Ontario and Lispidecodus plinthotus Kesling, 1967 from the Lower Mississippian Banff Formation of Alberta, shows that previous accounts of these taxa were largely erroneous. Unlike other isorophid edrioasteroids, Thresherodiscus has branching ambulacra, an unusual hydro-gonopore, differentiated interambulacral plates bearing respiratory structures, and ambulacra that extend onto the peripheral rim. Except for the turreted thecal shape, Lispidecodus is a rather typical discocystinid edrioasteroid. Phylogenetic analysis weakly supports the placement of Thresherodiscus within Agelacrinitidae and strongly places Lispidecodus within Discocystinae.Read the article »
Article DOI: 10.1139/e05-114
Project DOI: 10.7934/P4763, http://dx.doi.org/10.7934/P4763
This project contains | Matrices |
---|---|
Download Project SDD File | Total scored cells: 306 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 24 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 53 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:24/0 |
Currently Viewing:
MorphoBank Project 4763
MorphoBank Project 4763
- Creation Date:
20 July 2023 - Publication Date:
01 August 2023 - Project views: 2531
Authors' Institutions
- Brigham Young University
- University of Tennessee
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Joyce Song Project Administrator | 15 | 1 | 1 | 24 | 0 | 0 | 306 (306, 0, 0) | 0 | 0 | 0 | ||||
Brooke Long-Fox Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29371' (15 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Carneyella Last Modified in 07/26/23 | 2 | 22 | 22 | 0 | 0 | 0 | 0 | 2 |
[2] † Foerstediscus Last Modified in 07/26/23 | 2 | 22 | 22 | 0 | 0 | 0 | 0 | 2 |
[3] † Isorophus Last Modified in 07/26/23 | 2 | 22 | 22 | 0 | 0 | 0 | 0 | 2 |
[4] † Isorophusella Last Modified in 07/26/23 | 3 | 21 | 21 | 0 | 0 | 0 | 0 | 2 |
[5] † Agelacrinites Last Modified in 07/26/23 | 3 | 21 | 21 | 0 | 0 | 0 | 0 | 2 |
[6] † Thresherodiscus Last Modified in 07/26/23 | 7 | 17 | 17 | 0 | 0 | 0 | 0 | 2 |
[7] † Neoisorophusella Last Modified in 07/26/23 | 4 | 20 | 20 | 0 | 0 | 0 | 0 | 2 |
[8] † Postibulla Last Modified in 07/26/23 | 3 | 21 | 21 | 0 | 0 | 0 | 0 | 2 |
[9] † Ulrichidiscus Last Modified in 07/26/23 | 1 | 23 | 23 | 0 | 0 | 0 | 0 | 2 |
[10] † Lepidodiscus Last Modified in 07/26/23 | 1 | 23 | 23 | 0 | 0 | 0 | 0 | 2 |
[11] † Clavidiscus Last Modified in 07/26/23 | 1 | 23 | 23 | 0 | 0 | 0 | 0 | 2 |
[12] † Hypsiclavus Last Modified in 07/26/23 | 1 | 23 | 23 | 0 | 0 | 0 | 0 | 2 |
[13] † Giganticlavus Last Modified in 07/26/23 | 7 | 17 | 17 | 0 | 0 | 0 | 0 | 2 |
[14] † Cooperidiscus Last Modified in 07/26/23 | 10 | 14 | 14 | 0 | 0 | 0 | 0 | 2 |
[15] † Lispidecodus Last Modified in 07/26/23 | 7 | 17 | 17 | 0 | 0 | 0 | 0 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 2531 | |
Project overview | 225 | |
Views for media list | 159 | |
Media views | 527 | Media search (446 views); M890411 (81 views); |
Bibliography | 105 | |
Matrix views | 133 | Matrix landing page (127 views); Matrix (6 views); |
Documents list | 144 | |
Taxon list | 970 | |
Specimen list | 268 |