Deltoceras Hyatt 1894
Genus Deltoceras Hyatt, 1894 Type species Deltoceras planum Hyatt, 1894, from strata of the St. George Group (Lower Ordovician) at Port au Choix, north side, western Newfoundland, Canada; by original designation. Emended diagnosis Rapidly expanding evolute conch possessing whorls with a compressed c...
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ftdatacite:10.5281/zenodo.5793588 2023-05-15T15:41:57+02:00 Deltoceras Hyatt 1894 Kröger, Björn Pohle, Alexander 2021 https://dx.doi.org/10.5281/zenodo.5793588 https://zenodo.org/record/5793588 unknown Zenodo http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5852/ejt.2021.783.1601 http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B https://dx.doi.org/10.5281/zenodo.5793587 https://zenodo.org/communities/biosyslit Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess CC0 Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Estonioceratidae Deltoceras Taxonomic treatment article-journal Text ScholarlyArticle 2021 ftdatacite https://doi.org/10.5281/zenodo.5793588 https://doi.org/10.5852/ejt.2021.783.1601 https://doi.org/10.5281/zenodo.5793587 2022-02-08T18:05:53Z Genus Deltoceras Hyatt, 1894 Type species Deltoceras planum Hyatt, 1894, from strata of the St. George Group (Lower Ordovician) at Port au Choix, north side, western Newfoundland, Canada; by original designation. Emended diagnosis Rapidly expanding evolute conch possessing whorls with a compressed cross section with very shallow or lacking zone of impression; adoral portion of conch divergent from preceding whorl at maturity; no conspicuous shell sculpture; sutures form weak lateral lobes; siphuncle subventral in position (adopted from Evans 2011). Remarks The exact location of the only known specimen of the type species is given in Hyatt (1894: 450) as “Port au Choix, north side” without specifying wether this relates to the Port au Choix peninsula or the town of Port au Choix. Deltoceras is listed under doubtful taxa in Teichert (1964), but Evans (2011) revived the genus and provided a concise diagnosis adopted from Ulrich et al. (1942), which is used herein. The genus diagnosis is slightly emended and expanded, herein, from being exclusively without dorsal impression zone to also having a very shallow impressive zone, in order to include Deltoceras beluga sp. nov. We justify this emendation also based on the poor knowledge on the details of the single specimen of the type species, which may also during earlier growth stages have a slightly involute conch curvature. The emphasis of this genus now is the combination of strongly compressed smooth whorls with a subventrally positioned siphuncle. : Published as part of Kröger, Björn & Pohle, Alexander, 2021, Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783 (1) on pages 62-63, DOI: 10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422 : {"references": ["Hyatt A. 1894. Phylogeny of an acquired characteristic. Proceedings of the American Philosophical Society 32: 349 - 647. https: // doi. org / 10.5962 / bhl. title. 59826", "Evans D. H. 2011. The cephalopod faunas of the Durness Limestone (Lower and early Middle Ordovician) of Northwest Scotland. Monograph of the Palaeontographical Society 637: 1 - 131.", "Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1"]} Text Beluga Beluga* Newfoundland Ny Friesland Port au Choix Spitsbergen DataCite Metadata Store (German National Library of Science and Technology) Canada Hyatt ENVELOPE(-65.833,-65.833,-65.750,-65.750) Port au Choix ENVELOPE(-57.365,-57.365,50.717,50.717) Ny Friesland ENVELOPE(16.847,16.847,79.498,79.498) Port au Choix Peninsula ENVELOPE(-57.348,-57.348,50.717,50.717) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Estonioceratidae Deltoceras |
spellingShingle |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Estonioceratidae Deltoceras Kröger, Björn Pohle, Alexander Deltoceras Hyatt 1894 |
topic_facet |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Estonioceratidae Deltoceras |
description |
Genus Deltoceras Hyatt, 1894 Type species Deltoceras planum Hyatt, 1894, from strata of the St. George Group (Lower Ordovician) at Port au Choix, north side, western Newfoundland, Canada; by original designation. Emended diagnosis Rapidly expanding evolute conch possessing whorls with a compressed cross section with very shallow or lacking zone of impression; adoral portion of conch divergent from preceding whorl at maturity; no conspicuous shell sculpture; sutures form weak lateral lobes; siphuncle subventral in position (adopted from Evans 2011). Remarks The exact location of the only known specimen of the type species is given in Hyatt (1894: 450) as “Port au Choix, north side” without specifying wether this relates to the Port au Choix peninsula or the town of Port au Choix. Deltoceras is listed under doubtful taxa in Teichert (1964), but Evans (2011) revived the genus and provided a concise diagnosis adopted from Ulrich et al. (1942), which is used herein. The genus diagnosis is slightly emended and expanded, herein, from being exclusively without dorsal impression zone to also having a very shallow impressive zone, in order to include Deltoceras beluga sp. nov. We justify this emendation also based on the poor knowledge on the details of the single specimen of the type species, which may also during earlier growth stages have a slightly involute conch curvature. The emphasis of this genus now is the combination of strongly compressed smooth whorls with a subventrally positioned siphuncle. : Published as part of Kröger, Björn & Pohle, Alexander, 2021, Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783 (1) on pages 62-63, DOI: 10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422 : {"references": ["Hyatt A. 1894. Phylogeny of an acquired characteristic. Proceedings of the American Philosophical Society 32: 349 - 647. https: // doi. org / 10.5962 / bhl. title. 59826", "Evans D. H. 2011. The cephalopod faunas of the Durness Limestone (Lower and early Middle Ordovician) of Northwest Scotland. Monograph of the Palaeontographical Society 637: 1 - 131.", "Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1"]} |
format |
Text |
author |
Kröger, Björn Pohle, Alexander |
author_facet |
Kröger, Björn Pohle, Alexander |
author_sort |
Kröger, Björn |
title |
Deltoceras Hyatt 1894 |
title_short |
Deltoceras Hyatt 1894 |
title_full |
Deltoceras Hyatt 1894 |
title_fullStr |
Deltoceras Hyatt 1894 |
title_full_unstemmed |
Deltoceras Hyatt 1894 |
title_sort |
deltoceras hyatt 1894 |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://dx.doi.org/10.5281/zenodo.5793588 https://zenodo.org/record/5793588 |
long_lat |
ENVELOPE(-65.833,-65.833,-65.750,-65.750) ENVELOPE(-57.365,-57.365,50.717,50.717) ENVELOPE(16.847,16.847,79.498,79.498) ENVELOPE(-57.348,-57.348,50.717,50.717) |
geographic |
Canada Hyatt Port au Choix Ny Friesland Port au Choix Peninsula |
geographic_facet |
Canada Hyatt Port au Choix Ny Friesland Port au Choix Peninsula |
genre |
Beluga Beluga* Newfoundland Ny Friesland Port au Choix Spitsbergen |
genre_facet |
Beluga Beluga* Newfoundland Ny Friesland Port au Choix Spitsbergen |
op_relation |
http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5852/ejt.2021.783.1601 http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B https://dx.doi.org/10.5281/zenodo.5793587 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC0 |
op_doi |
https://doi.org/10.5281/zenodo.5793588 https://doi.org/10.5852/ejt.2021.783.1601 https://doi.org/10.5281/zenodo.5793587 |
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1766374833138958336 |