The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada
The tiny Ordovician trilobite Oenonella Fortey, 1980 has previously been known only from cranidia and pygidia of its Middle Ordovician type species. Two new species, Oenonella wasisnamei and O. otherfellersorum, from the Darriwilian Table Cove Formation, western Newfoundland, Canada, are known from...
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The Paleontological Society
2022
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ftbioone:10.1017/jpa.2022.22 2024-06-02T08:10:38+00:00 The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada Jonathan M. Adrain Richard A. Fortey Jonathan M. Adrain Richard A. Fortey world 2022-09-07 text/HTML https://doi.org/10.1017/jpa.2022.22 en eng The Paleontological Society doi:10.1017/jpa.2022.22 All rights reserved. https://doi.org/10.1017/jpa.2022.22 Text 2022 ftbioone https://doi.org/10.1017/jpa.2022.22 2024-05-07T00:48:07Z The tiny Ordovician trilobite Oenonella Fortey, 1980 has previously been known only from cranidia and pygidia of its Middle Ordovician type species. Two new species, Oenonella wasisnamei and O. otherfellersorum, from the Darriwilian Table Cove Formation, western Newfoundland, Canada, are known from silicified material that provides new information on the librigena, ventral morphology, and intraspecific variation within the group. The stratigraphic range of the genus is extended downward by an occurrence in the Floian of the Shallow Bay Formation, western Newfoundland. New knowledge of Oenonella confirms its likely phylogenetic relationship with Proscharyia Peng, 1990, known from the Tremadocian of South China. In addition, the overlooked Amechilus Ross, 1951, seems to belong to the same group. Both Oenonella and Proscharyia have in the past been assigned to the aulacopleuride family Scharyiidae Osmólska, 1957. New silicified material effectively rules out this possibility. The broader affinity of the group remains obscure, but together the three genera are assigned to the new family Oenonellidae. Text Newfoundland BioOne Online Journals Canada Shallow Bay ENVELOPE(67.467,67.467,-67.817,-67.817) Table Cove ENVELOPE(-57.532,-57.532,50.350,50.350) Journal of Paleontology 96 5 1061 1077 |
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Open Polar |
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ftbioone |
language |
English |
description |
The tiny Ordovician trilobite Oenonella Fortey, 1980 has previously been known only from cranidia and pygidia of its Middle Ordovician type species. Two new species, Oenonella wasisnamei and O. otherfellersorum, from the Darriwilian Table Cove Formation, western Newfoundland, Canada, are known from silicified material that provides new information on the librigena, ventral morphology, and intraspecific variation within the group. The stratigraphic range of the genus is extended downward by an occurrence in the Floian of the Shallow Bay Formation, western Newfoundland. New knowledge of Oenonella confirms its likely phylogenetic relationship with Proscharyia Peng, 1990, known from the Tremadocian of South China. In addition, the overlooked Amechilus Ross, 1951, seems to belong to the same group. Both Oenonella and Proscharyia have in the past been assigned to the aulacopleuride family Scharyiidae Osmólska, 1957. New silicified material effectively rules out this possibility. The broader affinity of the group remains obscure, but together the three genera are assigned to the new family Oenonellidae. |
author2 |
Jonathan M. Adrain Richard A. Fortey |
format |
Text |
author |
Jonathan M. Adrain Richard A. Fortey |
spellingShingle |
Jonathan M. Adrain Richard A. Fortey The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada |
author_facet |
Jonathan M. Adrain Richard A. Fortey |
author_sort |
Jonathan M. Adrain |
title |
The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada |
title_short |
The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada |
title_full |
The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada |
title_fullStr |
The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada |
title_full_unstemmed |
The Ordovician trilobite Oenonella and the new family Oenonellidae, with new species from western Newfoundland, Canada |
title_sort |
ordovician trilobite oenonella and the new family oenonellidae, with new species from western newfoundland, canada |
publisher |
The Paleontological Society |
publishDate |
2022 |
url |
https://doi.org/10.1017/jpa.2022.22 |
op_coverage |
world |
long_lat |
ENVELOPE(67.467,67.467,-67.817,-67.817) ENVELOPE(-57.532,-57.532,50.350,50.350) |
geographic |
Canada Shallow Bay Table Cove |
geographic_facet |
Canada Shallow Bay Table Cove |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
https://doi.org/10.1017/jpa.2022.22 |
op_relation |
doi:10.1017/jpa.2022.22 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1017/jpa.2022.22 |
container_title |
Journal of Paleontology |
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96 |
container_issue |
5 |
container_start_page |
1061 |
op_container_end_page |
1077 |
_version_ |
1800756546966126592 |