Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov
Lawrenceoceras ebenus sp. nov urn:lsid:zoobank.org:act: C148361C-5535-4AE5-8835-282F9C8C3EC3 Figs 5D–E, 6A, 7B, 8A Diagnosis Exogastrically curved conch with angle of expansion of conch width of ca 8° and slightly depressed conch cross section (rW = 1.12); ornamented with fine directly transverse st...
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ftzenodo:oai:zenodo.org:5793440 2023-05-15T18:29:53+02:00 Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov Kröger, Björn Pohle, Alexander 2021-12-20 https://zenodo.org/record/5793440 https://doi.org/10.5281/zenodo.5793440 unknown info:eu-repo/semantics/altIdentifier/url/http://zoobank.org/C148361C-5535-4AE5-8835-282F9C8C3EC3 info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/5F4487ACFFA5FFA5FD8D7C8CFAF67805 info:eu-repo/semantics/altIdentifier/lsid/urn:lsid:zoobank.org:act:C148361C-5535-4AE5-8835-282F9C8C3EC3 doi:10.5852/ejt.2021.783.1601 http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 doi:10.5281/zenodo.5793432 doi:10.5281/zenodo.5793436 doi:10.5281/zenodo.5793438 doi:10.5281/zenodo.5793444 http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B doi:10.5281/zenodo.5793439 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5793440 https://doi.org/10.5281/zenodo.5793440 oai:zenodo.org:5793440 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783(1) 10-12 Biodiversity Taxonomy Animalia Mollusca Cephalopoda Ellesmerocerida Bassleroceratidae Lawrenceoceras Lawrenceoceras ebenus info:eu-repo/semantics/other publication-taxonomictreatment 2021 ftzenodo https://doi.org/10.5281/zenodo.579344010.5852/ejt.2021.783.160110.5281/zenodo.579343210.5281/zenodo.579343610.5281/zenodo.579343810.5281/zenodo.579344410.5281/zenodo.5793439 2023-03-10T19:17:50Z Lawrenceoceras ebenus sp. nov urn:lsid:zoobank.org:act: C148361C-5535-4AE5-8835-282F9C8C3EC3 Figs 5D–E, 6A, 7B, 8A Diagnosis Exogastrically curved conch with angle of expansion of conch width of ca 8° and slightly depressed conch cross section (rW = 1.12); ornamented with fine directly transverse striae and rugae. Siphuncle small, 0.1 of conch height and near conch margin. Etymology In honour to the Svalbard Husky “Ebony”, from the Latin ‘ hebenus ’, ‘ebony’. Type material Holotype Specimen FMNH-P30335; by monotypy. Type locality and horizon Profilstranda section, adjacent to Hinlopenstretet, Spitsbergen, bed Po123.3, 120.3 m above base of Olenidsletta Member, V 2a trilobite zone, Blackhillsian, Floian. Description Specimen FMNH-P30335 is a fragment of a curved phragmocone and part of a body chamber with a length of 31 mm and a conch width of 9–13.3 mm (angle of expansion ca 8°). The preserved part of the body chamber is 8 mm long. The conch surface is ornamented with fine directly transverse striae, 10–12 striae occur per mm at a conch height of ca 11 mm. The adoral ca 10 mm of the fragment surface is additionally ornamented with irregularly spaced rugae. Striae form a very shallow hyponomic sinus on the convex side of the conch curvature. The conch cross section is slightly depressed, with a height of 11.1 mm where the width is 12.5 mm (rW = 1.12). The septa are narrowly spaced, ca 10–12 chambers occur per distance similar to corresponding conch. At the adapical end of the specimen the septal perforation is positioned ca 0.7 mm from the conch margin positioned on the convex side of the conch curvature and has a diameter of 0.7 mm. The connecting ring is thick and with concave segments. The septal necks are short and loxochoanitic. Comparison Lawrenceoceras ebenus sp. nov. is similar in conch cross section to L. larus sp. nov., but differs from the latter species and other species of this genus in having a distinctively ornamented conch surface. Published as part of Kröger, Björn & Pohle, Alexander, 2021, ... Other/Unknown Material Svalbard Spitsbergen Zenodo Hinlopenstretet ENVELOPE(20.728,20.728,79.246,79.246) Svalbard |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Ellesmerocerida Bassleroceratidae Lawrenceoceras Lawrenceoceras ebenus |
spellingShingle |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Ellesmerocerida Bassleroceratidae Lawrenceoceras Lawrenceoceras ebenus Kröger, Björn Pohle, Alexander Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov |
topic_facet |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Ellesmerocerida Bassleroceratidae Lawrenceoceras Lawrenceoceras ebenus |
description |
Lawrenceoceras ebenus sp. nov urn:lsid:zoobank.org:act: C148361C-5535-4AE5-8835-282F9C8C3EC3 Figs 5D–E, 6A, 7B, 8A Diagnosis Exogastrically curved conch with angle of expansion of conch width of ca 8° and slightly depressed conch cross section (rW = 1.12); ornamented with fine directly transverse striae and rugae. Siphuncle small, 0.1 of conch height and near conch margin. Etymology In honour to the Svalbard Husky “Ebony”, from the Latin ‘ hebenus ’, ‘ebony’. Type material Holotype Specimen FMNH-P30335; by monotypy. Type locality and horizon Profilstranda section, adjacent to Hinlopenstretet, Spitsbergen, bed Po123.3, 120.3 m above base of Olenidsletta Member, V 2a trilobite zone, Blackhillsian, Floian. Description Specimen FMNH-P30335 is a fragment of a curved phragmocone and part of a body chamber with a length of 31 mm and a conch width of 9–13.3 mm (angle of expansion ca 8°). The preserved part of the body chamber is 8 mm long. The conch surface is ornamented with fine directly transverse striae, 10–12 striae occur per mm at a conch height of ca 11 mm. The adoral ca 10 mm of the fragment surface is additionally ornamented with irregularly spaced rugae. Striae form a very shallow hyponomic sinus on the convex side of the conch curvature. The conch cross section is slightly depressed, with a height of 11.1 mm where the width is 12.5 mm (rW = 1.12). The septa are narrowly spaced, ca 10–12 chambers occur per distance similar to corresponding conch. At the adapical end of the specimen the septal perforation is positioned ca 0.7 mm from the conch margin positioned on the convex side of the conch curvature and has a diameter of 0.7 mm. The connecting ring is thick and with concave segments. The septal necks are short and loxochoanitic. Comparison Lawrenceoceras ebenus sp. nov. is similar in conch cross section to L. larus sp. nov., but differs from the latter species and other species of this genus in having a distinctively ornamented conch surface. Published as part of Kröger, Björn & Pohle, Alexander, 2021, ... |
format |
Other/Unknown Material |
author |
Kröger, Björn Pohle, Alexander |
author_facet |
Kröger, Björn Pohle, Alexander |
author_sort |
Kröger, Björn |
title |
Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov |
title_short |
Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov |
title_full |
Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov |
title_fullStr |
Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov |
title_full_unstemmed |
Lawrenceoceras ebenus Kröger & Pohle 2021, sp. nov |
title_sort |
lawrenceoceras ebenus kröger & pohle 2021, sp. nov |
publishDate |
2021 |
url |
https://zenodo.org/record/5793440 https://doi.org/10.5281/zenodo.5793440 |
long_lat |
ENVELOPE(20.728,20.728,79.246,79.246) |
geographic |
Hinlopenstretet Svalbard |
geographic_facet |
Hinlopenstretet Svalbard |
genre |
Svalbard Spitsbergen |
genre_facet |
Svalbard Spitsbergen |
op_source |
Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783(1) 10-12 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://zoobank.org/C148361C-5535-4AE5-8835-282F9C8C3EC3 info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/5F4487ACFFA5FFA5FD8D7C8CFAF67805 info:eu-repo/semantics/altIdentifier/lsid/urn:lsid:zoobank.org:act:C148361C-5535-4AE5-8835-282F9C8C3EC3 doi:10.5852/ejt.2021.783.1601 http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 doi:10.5281/zenodo.5793432 doi:10.5281/zenodo.5793436 doi:10.5281/zenodo.5793438 doi:10.5281/zenodo.5793444 http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B doi:10.5281/zenodo.5793439 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5793440 https://doi.org/10.5281/zenodo.5793440 oai:zenodo.org:5793440 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.579344010.5852/ejt.2021.783.160110.5281/zenodo.579343210.5281/zenodo.579343610.5281/zenodo.579343810.5281/zenodo.579344410.5281/zenodo.5793439 |
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1766213313023180800 |