Atlanticalymene Adrain & Karim 2020, n. gen.
Atlanticalymene n. gen. Type species. Atlanticalymene bardensis n. sp., from the Darriwilian Table Cove Formation of western Newfoundland, Canada. Other species. Atlanticalymene n. sp. A (“? Ischyrophyma sp. ind.” of Whittington [1963, p. 50, pl. 6, figs. 13-15]), Shallow Bay Formation (lower Darriw...
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ftzenodo:oai:zenodo.org:4537324 2023-05-15T17:21:56+02:00 Atlanticalymene Adrain & Karim 2020, n. gen. Adrain, Jonathan M. Karim, Talia S. McAdams, Neo E. B. 2020-10-05 https://zenodo.org/record/4537324 https://doi.org/10.5281/zenodo.4537324 unknown info:eu-repo/semantics/altIdentifier/url/http://zoobank.org/FF6A8B56-18E7-4F98-9A2F-C04BF4F9337C info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/9F70020EEB38AB22C1D920A5A09537AF info:eu-repo/semantics/altIdentifier/lsid/urn:lsid:zoobank.org:act:FF6A8B56-18E7-4F98-9A2F-C04BF4F9337C doi:10.11646/zootaxa.4859.1.1 http://zenodo.org/record/4537316 http://publication.plazi.org/id/63497A76EB3EAB2AC14E244EA46E3779 http://zoobank.org/B7E3D096-CF3F-4915-BE47-1F256C0294C6 doi:10.5281/zenodo.4537323 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4537324 https://doi.org/10.5281/zenodo.4537324 oai:zenodo.org:4537324 info:eu-repo/semantics/openAccess Atlanticalymene, a new genus of Middle Ordovician (Darriwilian) calymenine trilobites, and revision of the calymenoidean genus Protocalymene Ross, pp. 1-55 in Zootaxa 4859(1) 7-8 Biodiversity Taxonomy Animalia Arthropoda Trilobita Phacopida Bathycheilidae Atlanticalymene info:eu-repo/semantics/other publication-taxonomictreatment 2020 ftzenodo https://doi.org/10.5281/zenodo.453732410.11646/zootaxa.4859.1.110.5281/zenodo.4537323 2023-03-10T16:16:07Z Atlanticalymene n. gen. Type species. Atlanticalymene bardensis n. sp., from the Darriwilian Table Cove Formation of western Newfoundland, Canada. Other species. Atlanticalymene n. sp. A (“? Ischyrophyma sp. ind.” of Whittington [1963, p. 50, pl. 6, figs. 13-15]), Shallow Bay Formation (lower Darriwilian), Lower Head, western Newfoundland; Sthenarocalymene sp. indet. of Zhou et al. (2014, p. 114, fig. 56), Yijianfang Formation (Dapingian), Yijianfang, Bachu, northwestern Tarim, Xinjiang, China. Etymology. From the Atlantic Ocean, on the western edge of which the type locality is situated, and the genus name Calymene; gender is feminine. Diagnosis. Glabella long and parallel-sided anterior to L1; L1 well developed and nearly completely isolated; L2 and L3 scarcely developed, S2 faint and barely discernible, S3 not impressed; cranidial anterior border strongly bowed in anterior view; preglabellar area elongate (sag.; exsag.); eye ridge expressed dorsally; palpebral lobe small; sculpture of small to coarse fairly densely scattered tubercles over all skeletal parts except hypostome. Discussion. As noted above, a consensus emerged in the recent literature (Fortey, 1990; Fortey and Droser, 1999; Turvey, 2002) that Middle Ordovician Laurentian calymenoidean species should all be assigned to Protocalymene and that they are unambiguous calymenids. Revision on the basis of new photographs herein demonstrates that a calymenid affinity is true of only a handful of the occurrences (those assigned by Adrain and Fortey [1997] to Sthenarocalymene), and not necessarily true of Protocalymene mcallisteri. The various reports break down into two morphological groups: taxa related to Darriwilian material described in open nomenclature by Whittington (1965) and taxa related to P. mcallisteri. The former collectively represent Atlanticalymene n.gen., whereas the latter, while certainly calymenoidean, are considered below to be of unclear family relationships. The genus diagnosis is complicated by the fact that there is only one well ... Other/Unknown Material Newfoundland Zenodo Canada Lower Head ENVELOPE(-57.765,-57.765,49.950,49.950) Shallow Bay ENVELOPE(67.467,67.467,-67.817,-67.817) Table Cove ENVELOPE(-57.532,-57.532,50.350,50.350) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Arthropoda Trilobita Phacopida Bathycheilidae Atlanticalymene |
spellingShingle |
Biodiversity Taxonomy Animalia Arthropoda Trilobita Phacopida Bathycheilidae Atlanticalymene Adrain, Jonathan M. Karim, Talia S. McAdams, Neo E. B. Atlanticalymene Adrain & Karim 2020, n. gen. |
topic_facet |
Biodiversity Taxonomy Animalia Arthropoda Trilobita Phacopida Bathycheilidae Atlanticalymene |
description |
Atlanticalymene n. gen. Type species. Atlanticalymene bardensis n. sp., from the Darriwilian Table Cove Formation of western Newfoundland, Canada. Other species. Atlanticalymene n. sp. A (“? Ischyrophyma sp. ind.” of Whittington [1963, p. 50, pl. 6, figs. 13-15]), Shallow Bay Formation (lower Darriwilian), Lower Head, western Newfoundland; Sthenarocalymene sp. indet. of Zhou et al. (2014, p. 114, fig. 56), Yijianfang Formation (Dapingian), Yijianfang, Bachu, northwestern Tarim, Xinjiang, China. Etymology. From the Atlantic Ocean, on the western edge of which the type locality is situated, and the genus name Calymene; gender is feminine. Diagnosis. Glabella long and parallel-sided anterior to L1; L1 well developed and nearly completely isolated; L2 and L3 scarcely developed, S2 faint and barely discernible, S3 not impressed; cranidial anterior border strongly bowed in anterior view; preglabellar area elongate (sag.; exsag.); eye ridge expressed dorsally; palpebral lobe small; sculpture of small to coarse fairly densely scattered tubercles over all skeletal parts except hypostome. Discussion. As noted above, a consensus emerged in the recent literature (Fortey, 1990; Fortey and Droser, 1999; Turvey, 2002) that Middle Ordovician Laurentian calymenoidean species should all be assigned to Protocalymene and that they are unambiguous calymenids. Revision on the basis of new photographs herein demonstrates that a calymenid affinity is true of only a handful of the occurrences (those assigned by Adrain and Fortey [1997] to Sthenarocalymene), and not necessarily true of Protocalymene mcallisteri. The various reports break down into two morphological groups: taxa related to Darriwilian material described in open nomenclature by Whittington (1965) and taxa related to P. mcallisteri. The former collectively represent Atlanticalymene n.gen., whereas the latter, while certainly calymenoidean, are considered below to be of unclear family relationships. The genus diagnosis is complicated by the fact that there is only one well ... |
format |
Other/Unknown Material |
author |
Adrain, Jonathan M. Karim, Talia S. McAdams, Neo E. B. |
author_facet |
Adrain, Jonathan M. Karim, Talia S. McAdams, Neo E. B. |
author_sort |
Adrain, Jonathan M. |
title |
Atlanticalymene Adrain & Karim 2020, n. gen. |
title_short |
Atlanticalymene Adrain & Karim 2020, n. gen. |
title_full |
Atlanticalymene Adrain & Karim 2020, n. gen. |
title_fullStr |
Atlanticalymene Adrain & Karim 2020, n. gen. |
title_full_unstemmed |
Atlanticalymene Adrain & Karim 2020, n. gen. |
title_sort |
atlanticalymene adrain & karim 2020, n. gen. |
publishDate |
2020 |
url |
https://zenodo.org/record/4537324 https://doi.org/10.5281/zenodo.4537324 |
long_lat |
ENVELOPE(-57.765,-57.765,49.950,49.950) ENVELOPE(67.467,67.467,-67.817,-67.817) ENVELOPE(-57.532,-57.532,50.350,50.350) |
geographic |
Canada Lower Head Shallow Bay Table Cove |
geographic_facet |
Canada Lower Head Shallow Bay Table Cove |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Atlanticalymene, a new genus of Middle Ordovician (Darriwilian) calymenine trilobites, and revision of the calymenoidean genus Protocalymene Ross, pp. 1-55 in Zootaxa 4859(1) 7-8 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://zoobank.org/FF6A8B56-18E7-4F98-9A2F-C04BF4F9337C info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/9F70020EEB38AB22C1D920A5A09537AF info:eu-repo/semantics/altIdentifier/lsid/urn:lsid:zoobank.org:act:FF6A8B56-18E7-4F98-9A2F-C04BF4F9337C doi:10.11646/zootaxa.4859.1.1 http://zenodo.org/record/4537316 http://publication.plazi.org/id/63497A76EB3EAB2AC14E244EA46E3779 http://zoobank.org/B7E3D096-CF3F-4915-BE47-1F256C0294C6 doi:10.5281/zenodo.4537323 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4537324 https://doi.org/10.5281/zenodo.4537324 oai:zenodo.org:4537324 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.453732410.11646/zootaxa.4859.1.110.5281/zenodo.4537323 |
_version_ |
1766107955893108736 |