Project 4417: M. Oudot, C. Crônier, P. Neige, D. Holloway. 2019. Phylogeny of some Devonian trilobites and consequences for the systematics ofAusterops(Phacopidae). Journal of Systematic Palaeontology. 17 (9):775-790.
Abstract
A comprehensive phylogenetic hypothesis for Devonian phacopid trilobites of the genus Austerops has not previously been proposed. We carried out a cladistic analysis of the 13 species and subspecies assigned to Austerops, based on a data matrix of 63 characters. Two species of the morphologically very similar genus Chotecops, C. auspex and C. hoseri, and seven other close relatives (Reedops cephalotes hamlagdadianus, Boeckops stelcki, Morocops granulops, Paciphacops logani, Phacops latifrons, Phacops araw and Pedinopariops (Hypsipariops) vagabundus) were also included in the analysis in order to test their relationship with species of Austerops. Parsimony analyses using a heuristic method, with Calyptaulax callirachis and C. glabella as outgroup taxa, produced two most parsimonious trees of 341 steps. These trees are partly consistent with trees obtained from additional analyses performed with modified data sets (deletion of homoplastic characters, multistate characters, continuous characters carved into 5% increments, thoracic and pygidial characters, or taxa with numerous unknown characters). Results suggest that Austerops sp. B and A.? sp. D are close to Chotecops hoseri and C. auspex, and that these species constitute a monophyletic group. Austerops Austerops menchikoffi, A. speculator and A. punctatus are also a monophyletic group and reasonably constitute a sister group of that formed by the rest of Austerops and Chotecops sensu lato, while A. hottonensis seems phylogenetically distant from other representatives of Austerops. Chotecops including C. hoseri and C. auspex together with Austerops sp. B and A.? sp. D seem derived from A. legrandi. The relationship between Austerops and Chotecops remains partly unresolved but it seems likely that their recognition as separate taxa results in paraphyletic groups. The phylogenetic analysis suggests that the currently poorly known Austerops sp. B and A.? sp. D should be reassigned to Chotecops.Read the article »
Article DOI: 10.1080/14772019.2018.1471105
Project DOI: 10.7934/P4417, http://dx.doi.org/10.7934/P4417
This project contains | Matrices |
---|---|
Download Project SDD File | Total scored cells: 1464 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 63 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 221 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:63/0 |
Currently Viewing:
MorphoBank Project 4417
MorphoBank Project 4417
- Creation Date:
25 September 2022 - Publication Date:
10 October 2022 - Project views: 3980
- Matrix downloads: 1
Authors' Institutions
- Museum Victoria, Melbourne
- Centre National de la Recherche Scientifique (CNRS)
- Université Bourgogne Franche-Comté (UBFC)
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 24 | 1 | 1 | 63 | 0 | 0 | 1464 (1464, 0, 0) | 0 | 0 | 0 | ||||
Catherine Crônier Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M28990' (24 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Calyptaulax callirachis Last Modified in 09/25/22 | 1 | 63 | 62 | 0 | 0 | 0 | 0 | 2 |
[2] † Calyptaulax glabella Last Modified in 09/25/22 | 17 | 48 | 46 | 0 | 0 | 0 | 0 | 2 |
[3] † Acernapsis orestes Last Modified in 09/25/22 | 0 | 65 | 63 | 0 | 0 | 0 | 0 | 2 |
[4] † Ananaspis fecunda Last Modified in 09/25/22 | 1 | 63 | 62 | 0 | 0 | 0 | 0 | 2 |
[5] † R c hamlagdadianus Last Modified in 09/25/22 | 0 | 65 | 63 | 0 | 0 | 0 | 0 | 2 |
[6] † Ch fhoseri Last Modified in 09/25/22 | 0 | 68 | 63 | 0 | 0 | 0 | 0 | 2 |
[7] † Ch auspex Last Modified in 09/25/22 | 2 | 65 | 61 | 0 | 0 | 0 | 0 | 2 |
[8] † Austerops menchikoffi Last Modified in 09/25/22 | 0 | 64 | 63 | 0 | 0 | 0 | 0 | 2 |
[9] † Austerops speculator Last Modified in 09/25/22 | 2 | 64 | 61 | 0 | 0 | 0 | 0 | 2 |
[10] † Austerops punctatus Last Modified in 09/25/22 | 0 | 66 | 63 | 0 | 0 | 0 | 0 | 2 |
[11] † Austerops kermiti Last Modified in 09/25/22 | 0 | 67 | 63 | 0 | 0 | 0 | 0 | 2 |
[12] † Austerops salamandar Last Modified in 09/25/22 | 0 | 63 | 63 | 0 | 0 | 0 | 0 | 2 |
[13] † Austerops legrandi Last Modified in 09/25/22 | 0 | 66 | 63 | 0 | 0 | 0 | 0 | 2 |
[14] † Austerops sp B Last Modified in 09/25/22 | 17 | 50 | 46 | 0 | 0 | 0 | 0 | 2 |
[15] † Austerops salamandaroides Last Modified in 09/25/22 | 2 | 63 | 61 | 0 | 0 | 0 | 0 | 2 |
[16] † Austerops spd Last Modified in 09/25/22 | 27 | 36 | 36 | 0 | 0 | 0 | 0 | 2 |
[17] † Austerops couvinensis Last Modified in 09/25/22 | 1 | 68 | 62 | 0 | 0 | 0 | 0 | 2 |
[18] † Austerops hottonensis Last Modified in 09/25/22 | 9 | 56 | 54 | 0 | 0 | 0 | 0 | 2 |
[19] † Boeckops stelcki Last Modified in 09/25/22 | 0 | 65 | 63 | 0 | 0 | 0 | 0 | 2 |
[20] † Morocops granulops Last Modified in 09/25/22 | 0 | 65 | 63 | 0 | 0 | 0 | 0 | 2 |
[21] † Phacops latifrons Last Modified in 09/25/22 | 16 | 48 | 47 | 0 | 0 | 0 | 0 | 2 |
[22] † Phacops araw Last Modified in 09/25/22 | 1 | 63 | 62 | 0 | 0 | 0 | 0 | 2 |
[23] † Pedinopariops vagabundus Last Modified in 09/25/22 | 0 | 63 | 63 | 0 | 0 | 0 | 0 | 2 |
[24] † Paciphacops logani Last Modified in 09/25/22 | 4 | 60 | 59 | 0 | 0 | 0 | 0 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 3980 | |
Project overview | 375 | |
Documents list | 232 | |
Media views | 957 | Media search (808 views); M846890 (149 views); |
Matrix views | 269 | Matrix landing page (251 views); Morphological matrix from Oudot et al 2018 (prepared by MorphoBank curators from original submission) (18 views); |
Views for media list | 313 | |
Taxon list | 1156 | |
Specimen list | 482 | |
Bibliography | 196 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 3 | |
Project downloads | 2 | |
Matrix downloads | 1 | Morphological matrix from Oudot et al 2018 (prepared by MorphoBank curators from original submission) (1 download); |