Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina
The richly fossiliferous Ekspedition Bræ Formation of North Greenland yields a typical oligospecific fossil assemblage with well-preserved trilobites, helcionelloids, and lingulate brachiopods. The trilobites include Itagnostus subhastatus new species, Itagnostus sp. cf. I. gaspensis (Rasetti, 1948)...
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ftbioone:10.1017/jpa.2016.152 2024-06-02T08:07:23+00:00 Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina Gerd Geyer John S. Peel Gerd Geyer John S. Peel world 2017-01-01 text/HTML https://doi.org/10.1017/jpa.2016.152 en eng The Paleontological Society doi:10.1017/jpa.2016.152 All rights reserved. https://doi.org/10.1017/jpa.2016.152 Text 2017 ftbioone https://doi.org/10.1017/jpa.2016.152 2024-05-07T00:47:45Z The richly fossiliferous Ekspedition Bræ Formation of North Greenland yields a typical oligospecific fossil assemblage with well-preserved trilobites, helcionelloids, and lingulate brachiopods. The trilobites include Itagnostus subhastatus new species, Itagnostus sp. cf. I. gaspensis (Rasetti, 1948), Elrathina aphrodite new species, Elrathina athena new species, Elrathina hera new species, and Elrathia groenlandica new species—a fossil assemblage typical of the Bathyuriscus-Elrathina Zone as known from the Cordilleran regions of Laurentia. Excellent preservation allows a detailed assessment of the prosopon and elucidates aspects of the ontogenetic development of Elrathina and Elrathia. An evaluation of Elrathina includes a redescription of its type species, E. cordillerae (Rominger, 1887), based on the type material, and indicates that most specimens collected from the Burgess Shale and previously dealt with as E. cordillerae represent a new species. Text Greenland North Greenland BioOne Online Journals Aphrodite ENVELOPE(-64.533,-64.533,-68.900,-68.900) Burgess ENVELOPE(76.128,76.128,-69.415,-69.415) Greenland Journal of Paleontology 91 2 265 293 |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
The richly fossiliferous Ekspedition Bræ Formation of North Greenland yields a typical oligospecific fossil assemblage with well-preserved trilobites, helcionelloids, and lingulate brachiopods. The trilobites include Itagnostus subhastatus new species, Itagnostus sp. cf. I. gaspensis (Rasetti, 1948), Elrathina aphrodite new species, Elrathina athena new species, Elrathina hera new species, and Elrathia groenlandica new species—a fossil assemblage typical of the Bathyuriscus-Elrathina Zone as known from the Cordilleran regions of Laurentia. Excellent preservation allows a detailed assessment of the prosopon and elucidates aspects of the ontogenetic development of Elrathina and Elrathia. An evaluation of Elrathina includes a redescription of its type species, E. cordillerae (Rominger, 1887), based on the type material, and indicates that most specimens collected from the Burgess Shale and previously dealt with as E. cordillerae represent a new species. |
author2 |
Gerd Geyer John S. Peel |
format |
Text |
author |
Gerd Geyer John S. Peel |
spellingShingle |
Gerd Geyer John S. Peel Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina |
author_facet |
Gerd Geyer John S. Peel |
author_sort |
Gerd Geyer |
title |
Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina |
title_short |
Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina |
title_full |
Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina |
title_fullStr |
Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina |
title_full_unstemmed |
Middle Cambrian trilobites from the Ekspedition Bræ Formation of North Greenland, with a reappraisal of the genus Elrathina |
title_sort |
middle cambrian trilobites from the ekspedition bræ formation of north greenland, with a reappraisal of the genus elrathina |
publisher |
The Paleontological Society |
publishDate |
2017 |
url |
https://doi.org/10.1017/jpa.2016.152 |
op_coverage |
world |
long_lat |
ENVELOPE(-64.533,-64.533,-68.900,-68.900) ENVELOPE(76.128,76.128,-69.415,-69.415) |
geographic |
Aphrodite Burgess Greenland |
geographic_facet |
Aphrodite Burgess Greenland |
genre |
Greenland North Greenland |
genre_facet |
Greenland North Greenland |
op_source |
https://doi.org/10.1017/jpa.2016.152 |
op_relation |
doi:10.1017/jpa.2016.152 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1017/jpa.2016.152 |
container_title |
Journal of Paleontology |
container_volume |
91 |
container_issue |
2 |
container_start_page |
265 |
op_container_end_page |
293 |
_version_ |
1800752453737512960 |