Project 4791: S. E. Sequeira, M. I. Coates. 2000. Reassessment of ‘Cladodus’neilsoniTraquair: a primitive shark from the Lower Carboniferous of East Kilbridge, Scotland. Palaeontology. 43 (1):153-172.
Abstract
The partly articulated specimen of the Palaeozoic (Early Carboniferous) chondrichthyan ‘Cladodus’neilsoni Traquair from East Kilbride has been known since the late nineteenth century. As such, ‘C.’neilsoni Traquair has been cited in numerous publications, but it has become increasingly clear that its anatomy and systematic affinities are obscure. This comprehensive redescription of ‘C.’neilsoni reveals new details of the neurocranium (including presence of an otico-occipital fissure), dentition, visceral arches (clarifying the condition of the basibranchial pattern plus elongate copula), and pectoral fin. These data refute previously suggested synonymies, such as between ‘C’neilsoni and the contemporaneous Bearsden Stethacanthus. Attribution of ‘C.’neilsoni to the taxonomically unsupportable genus ‘Cladodus’ is rejected, and the species is redesignated as Gutturensisneilsoni gen. nov. Preliminary cladistic analysis places Gutturensisneilsoni within a polytomy including Stethacanthus, the symmoriid Cobelodus, and the root of a monophyletic group of neoselachian-like genera. ‘ Cladodont’ as a diagnostic term for early chondrichthyan teeth is found to be insufficiently precise, referring to an ill-defined grade of tooth morphologies present in a wide variety of Palaeozoic genera.Read the article »
Article DOI: 10.1111/1475-4983.00122
Project DOI: 10.7934/P4791, http://dx.doi.org/10.7934/P4791
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 255 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 23 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 52 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:23/0 |
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MorphoBank Project 4791
MorphoBank Project 4791
- Creation Date:
30 July 2023 - Publication Date:
07 August 2023 - Project views: 2220
- Matrix downloads: 1
Authors' Institutions
- University College London
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Joyce Song Project Administrator | 13 | 1 | 1 | 23 | 0 | 0 | 255 (255, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29400' (13 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Gutturensis neilsoni Last Modified in 07/30/23 | 12 | 11 | 11 | 0 | 0 | 0 | 0 | 1 |
[2] † Cladodus wildungensis Last Modified in 07/30/23 | 7 | 16 | 16 | 0 | 0 | 0 | 0 | 1 |
[3] † Cobelodus Last Modified in 07/30/23 | 11 | 12 | 12 | 0 | 0 | 0 | 0 | 1 |
[4] † Helodus Last Modified in 07/30/23 | 6 | 17 | 17 | 0 | 0 | 0 | 0 | 1 |
[5] † Hybodus Last Modified in 07/30/23 | 0 | 23 | 23 | 0 | 0 | 0 | 0 | 1 |
[6] † Stethacanthus Last Modified in 07/30/23 | 2 | 21 | 21 | 0 | 0 | 0 | 0 | 1 |
[7] † Tristychius Last Modified in 07/30/23 | 1 | 22 | 22 | 0 | 0 | 0 | 0 | 1 |
[8] † Tamiobatis sp. Last Modified in 07/30/23 | 2 | 21 | 21 | 0 | 0 | 0 | 0 | 1 |
[9] † Tamiobatis vetustus Last Modified in 07/30/23 | 0 | 23 | 23 | 0 | 0 | 0 | 0 | 1 |
[10] † Orthacanthus Last Modified in 07/30/23 | 0 | 23 | 23 | 0 | 0 | 0 | 0 | 1 |
[11] † Acanthodes Last Modified in 07/30/23 | 3 | 20 | 20 | 0 | 0 | 0 | 0 | 1 |
[12] † Kujdanowiaspis Last Modified in 07/30/23 | 0 | 23 | 23 | 0 | 0 | 0 | 0 | 1 |
[13] † Mimia Last Modified in 07/30/23 | 0 | 23 | 23 | 0 | 0 | 0 | 0 | 1 |
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Total project views | 2220 | |
Project overview | 179 | |
Bibliography | 98 | |
Matrix views | 127 | Matrix landing page (121 views); Matrix (6 views); |
Media views | 489 | Media search (416 views); M890435 (73 views); |
Views for media list | 156 | |
Documents list | 122 | |
Specimen list | 262 | |
Taxon list | 787 |
Project downloads
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Total downloads from project | 1 | |
Matrix downloads | 1 | Matrix (1 download); |