A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic
A new genus and species of cyathaspid heterostracan, Capitaspis giblingi, gen. et sp. nov., is described from the Late Silurian (Pridolian) Upper Member of the Somerset Island Formation, Northwest Territories, Canada. The new species is most closely related to Pionaspis in the subfamily Cyathaspidin...
Published in: | Journal of Vertebrate Paleontology |
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The Society of Vertebrate Paleontology
2013
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Online Access: | https://doi.org/10.1080/02724634.2012.717568 |
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ftbioone:10.1080/02724634.2012.717568 2024-06-02T08:02:05+00:00 A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic David K. Elliott David K. Elliott world 2013-01-01 text/HTML https://doi.org/10.1080/02724634.2012.717568 en eng The Society of Vertebrate Paleontology doi:10.1080/02724634.2012.717568 All rights reserved. https://doi.org/10.1080/02724634.2012.717568 Text 2013 ftbioone https://doi.org/10.1080/02724634.2012.717568 2024-05-07T00:50:56Z A new genus and species of cyathaspid heterostracan, Capitaspis giblingi, gen. et sp. nov., is described from the Late Silurian (Pridolian) Upper Member of the Somerset Island Formation, Northwest Territories, Canada. The new species is most closely related to Pionaspis in the subfamily Cyathaspidinae, family Cyathaspididae, showing similarity in the presence of distinct central, anterior, and lateral epitega and in overall size and proportions, but differing in details of the ridge pattern. The unique specimen of the new taxon has an articulated oral cover that consists of a series of postoral and oral plates. Because the oral cover is almost unknown for cyathaspids, this specimen increases our knowledge of the range of oral structures in this family beyond the simple structures known for Poraspis and Anglaspis. Text Arctic Northwest Territories Somerset Island BioOne Online Journals Arctic Northwest Territories Canada Somerset Island ENVELOPE(-93.500,-93.500,73.251,73.251) Journal of Vertebrate Paleontology 33 1 29 34 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
A new genus and species of cyathaspid heterostracan, Capitaspis giblingi, gen. et sp. nov., is described from the Late Silurian (Pridolian) Upper Member of the Somerset Island Formation, Northwest Territories, Canada. The new species is most closely related to Pionaspis in the subfamily Cyathaspidinae, family Cyathaspididae, showing similarity in the presence of distinct central, anterior, and lateral epitega and in overall size and proportions, but differing in details of the ridge pattern. The unique specimen of the new taxon has an articulated oral cover that consists of a series of postoral and oral plates. Because the oral cover is almost unknown for cyathaspids, this specimen increases our knowledge of the range of oral structures in this family beyond the simple structures known for Poraspis and Anglaspis. |
author2 |
David K. Elliott |
format |
Text |
author |
David K. Elliott |
spellingShingle |
David K. Elliott A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic |
author_facet |
David K. Elliott |
author_sort |
David K. Elliott |
title |
A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic |
title_short |
A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic |
title_full |
A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic |
title_fullStr |
A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic |
title_full_unstemmed |
A New Cyathaspid (Agnatha, Heterostraci) with an Articulated Oral Cover from the Late Silurian of the Canadian Arctic |
title_sort |
new cyathaspid (agnatha, heterostraci) with an articulated oral cover from the late silurian of the canadian arctic |
publisher |
The Society of Vertebrate Paleontology |
publishDate |
2013 |
url |
https://doi.org/10.1080/02724634.2012.717568 |
op_coverage |
world |
long_lat |
ENVELOPE(-93.500,-93.500,73.251,73.251) |
geographic |
Arctic Northwest Territories Canada Somerset Island |
geographic_facet |
Arctic Northwest Territories Canada Somerset Island |
genre |
Arctic Northwest Territories Somerset Island |
genre_facet |
Arctic Northwest Territories Somerset Island |
op_source |
https://doi.org/10.1080/02724634.2012.717568 |
op_relation |
doi:10.1080/02724634.2012.717568 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1080/02724634.2012.717568 |
container_title |
Journal of Vertebrate Paleontology |
container_volume |
33 |
container_issue |
1 |
container_start_page |
29 |
op_container_end_page |
34 |
_version_ |
1800746586300481536 |