Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity
The Early Devonian (Lochkovian) Man On The Hill (MOTH) locality in the Northwest Territories has yielded hundreds of exquisitely preserved specimens of over 72 different species of early vertebrates, greatly increasing our understanding of the diversity of this period. In this paper, we describe thr...
Published in: | Journal of Vertebrate Paleontology |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
The Society of Vertebrate Paleontology
2015
|
Subjects: | |
Online Access: | https://doi.org/10.1080/02724634.2014.948546 |
id |
ftbioone:10.1080/02724634.2014.948546 |
---|---|
record_format |
openpolar |
spelling |
ftbioone:10.1080/02724634.2014.948546 2024-06-02T08:10:14+00:00 Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity Stephanie A. Blais Chelsea R. Hermus Mark V. H. Wilson Stephanie A. Blais Chelsea R. Hermus Mark V. H. Wilson world 2015-01-01 text/HTML https://doi.org/10.1080/02724634.2014.948546 en eng The Society of Vertebrate Paleontology doi:10.1080/02724634.2014.948546 All rights reserved. https://doi.org/10.1080/02724634.2014.948546 Text 2015 ftbioone https://doi.org/10.1080/02724634.2014.948546 2024-05-07T00:50:56Z The Early Devonian (Lochkovian) Man On The Hill (MOTH) locality in the Northwest Territories has yielded hundreds of exquisitely preserved specimens of over 72 different species of early vertebrates, greatly increasing our understanding of the diversity of this period. In this paper, we describe three new genera comprising four new species of ischnacanthid acanthodian, based on their dentigerous jaw bones and teeth. This taxonomic diversity reflects some of the diversity of dentition found among ischnacanthiform acanthodians at the MOTH locality, in contrast to their highly conservative body forms. This high diversity of related forms suggests an early radiation in jaw and tooth morphology in Early Devonian ischnacanthiform acanthodians in this region. All ischnacanthiform specimens from MOTH were originally assigned to Ischnacanthus gracilis. However, study of the unique jaw and tooth morphology of MOTH ischnacanthiform specimens indicates that it is unlikely that Ischnacanthus was present at the MOTH locality. Text Mackenzie mountains Northwest Territories BioOne Online Journals Canada Northwest Territories Journal of Vertebrate Paleontology 35 1 e948546 |
institution |
Open Polar |
collection |
BioOne Online Journals |
op_collection_id |
ftbioone |
language |
English |
description |
The Early Devonian (Lochkovian) Man On The Hill (MOTH) locality in the Northwest Territories has yielded hundreds of exquisitely preserved specimens of over 72 different species of early vertebrates, greatly increasing our understanding of the diversity of this period. In this paper, we describe three new genera comprising four new species of ischnacanthid acanthodian, based on their dentigerous jaw bones and teeth. This taxonomic diversity reflects some of the diversity of dentition found among ischnacanthiform acanthodians at the MOTH locality, in contrast to their highly conservative body forms. This high diversity of related forms suggests an early radiation in jaw and tooth morphology in Early Devonian ischnacanthiform acanthodians in this region. All ischnacanthiform specimens from MOTH were originally assigned to Ischnacanthus gracilis. However, study of the unique jaw and tooth morphology of MOTH ischnacanthiform specimens indicates that it is unlikely that Ischnacanthus was present at the MOTH locality. |
author2 |
Stephanie A. Blais Chelsea R. Hermus Mark V. H. Wilson |
format |
Text |
author |
Stephanie A. Blais Chelsea R. Hermus Mark V. H. Wilson |
spellingShingle |
Stephanie A. Blais Chelsea R. Hermus Mark V. H. Wilson Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity |
author_facet |
Stephanie A. Blais Chelsea R. Hermus Mark V. H. Wilson |
author_sort |
Stephanie A. Blais |
title |
Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity |
title_short |
Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity |
title_full |
Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity |
title_fullStr |
Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity |
title_full_unstemmed |
Four New Early Devonian Ischnacanthid Acanthodians from the Mackenzie Mountains, Northwest Territories, Canada: An Early Experiment in Dental Diversity |
title_sort |
four new early devonian ischnacanthid acanthodians from the mackenzie mountains, northwest territories, canada: an early experiment in dental diversity |
publisher |
The Society of Vertebrate Paleontology |
publishDate |
2015 |
url |
https://doi.org/10.1080/02724634.2014.948546 |
op_coverage |
world |
geographic |
Canada Northwest Territories |
geographic_facet |
Canada Northwest Territories |
genre |
Mackenzie mountains Northwest Territories |
genre_facet |
Mackenzie mountains Northwest Territories |
op_source |
https://doi.org/10.1080/02724634.2014.948546 |
op_relation |
doi:10.1080/02724634.2014.948546 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1080/02724634.2014.948546 |
container_title |
Journal of Vertebrate Paleontology |
container_volume |
35 |
container_issue |
1 |
container_start_page |
e948546 |
_version_ |
1800756056451710976 |