Hinlopoceras Kröger & Pohle 2021, gen. nov.
Genus Hinlopoceras gen. nov. urn:lsid:zoobank.org:act: 1B85F4BE-F04C-4D03-A909-29003ACF507B Type species Hinlopoceras tempestatis gen. et sp. nov. from Olenidsletta Member, V1a trilobite zone, Blackhillsian, Floian. Diagnosis Longicones with slightly curved endogastric curvature during early ontogen...
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ftzenodo:oai:zenodo.org:5793486 2024-09-15T18:10:53+00:00 Hinlopoceras Kröger & Pohle 2021, gen. nov. Kröger, Björn Pohle, Alexander 2021-12-20 https://doi.org/10.5281/zenodo.5793486 unknown Zenodo https://doi.org/10.5852/ejt.2021.783.1601 http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 https://sibils.text-analytics.ch/search/collections/plazi/5F4487ACFFBAFFB9FDB07C9EFDEF7945 https://www.gbif.org/species/191693622 https://www.checklistbank.org/dataset/2884/taxon/5F4487ACFFBAFFB9FDB07C9EFDEF7945.taxon http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5793485 https://doi.org/10.5281/zenodo.5793486 oai:zenodo.org:5793486 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal 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), 23-24, (2021-12-20) Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Rioceratidae Hinlopoceras info:eu-repo/semantics/other 2021 ftzenodo https://doi.org/10.5281/zenodo.579348610.5852/ejt.2021.783.160110.5281/zenodo.5793485 2024-07-25T11:27:43Z Genus Hinlopoceras gen. nov. urn:lsid:zoobank.org:act: 1B85F4BE-F04C-4D03-A909-29003ACF507B Type species Hinlopoceras tempestatis gen. et sp. nov. from Olenidsletta Member, V1a trilobite zone, Blackhillsian, Floian. Diagnosis Longicones with slightly curved endogastric curvature during early ontogeny and orthoconic growth during later ontogeny, with cross section changing from circular in juvenile to compressed in adult growth stages; angle of expansion decreases during growth from ca 14° to 10°; ornamented with distinct transverse growth lines and striae; weak transverse annuli occur during latest growth stages; approximately four chambers occur at a distance similar to the corresponding conch height; siphuncle narrow with diameter ca ⅛ of corresponding conch height, strictly marginally positioned, with slightly concave segments and loxochoanitic septal necks. Etymology Referring to Hinlopen Strait, Svalbard, the type region of this genus. Comparison The new genus is unique within the Rioceratidae in having a combination of a relatively large angle of expansion, wide septal spacing, and a distinct transversely lirate ornamentation. The internal characters of this genus are relatively poorly known, because most specimens available have a strongly recrystallized phragmocone. The thin marginal siphuncle is nearly tubular or only very slightly concave, which can best be compared with that of Svalbardoceras gen. nov. The consistently poor preservation of the internal shell of specimens of Hinlopoceras gen. nov. in beds where internal features of Svalbardoceras gen. nov. are better preserved indicates that the septa were originally more fragile and sensitive to early dissolution and/or implosion. Species of Hinlopoceras gen. nov. can be distinguished from species of Svalbardoceras gen. nov. by their distinct ornamentation; in Hinlopoceras gen. nov. the conch is ornamented with transverse bands or striae, in Svalbardoceras gen. nov. the ornament consists of fine irregularly spaced growth lines. Published ... Other/Unknown Material Hinlopen Strait Svalbard Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Rioceratidae Hinlopoceras |
spellingShingle |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Rioceratidae Hinlopoceras Kröger, Björn Pohle, Alexander Hinlopoceras Kröger & Pohle 2021, gen. nov. |
topic_facet |
Biodiversity Taxonomy Animalia Mollusca Cephalopoda Tetrabranchia Rioceratidae Hinlopoceras |
description |
Genus Hinlopoceras gen. nov. urn:lsid:zoobank.org:act: 1B85F4BE-F04C-4D03-A909-29003ACF507B Type species Hinlopoceras tempestatis gen. et sp. nov. from Olenidsletta Member, V1a trilobite zone, Blackhillsian, Floian. Diagnosis Longicones with slightly curved endogastric curvature during early ontogeny and orthoconic growth during later ontogeny, with cross section changing from circular in juvenile to compressed in adult growth stages; angle of expansion decreases during growth from ca 14° to 10°; ornamented with distinct transverse growth lines and striae; weak transverse annuli occur during latest growth stages; approximately four chambers occur at a distance similar to the corresponding conch height; siphuncle narrow with diameter ca ⅛ of corresponding conch height, strictly marginally positioned, with slightly concave segments and loxochoanitic septal necks. Etymology Referring to Hinlopen Strait, Svalbard, the type region of this genus. Comparison The new genus is unique within the Rioceratidae in having a combination of a relatively large angle of expansion, wide septal spacing, and a distinct transversely lirate ornamentation. The internal characters of this genus are relatively poorly known, because most specimens available have a strongly recrystallized phragmocone. The thin marginal siphuncle is nearly tubular or only very slightly concave, which can best be compared with that of Svalbardoceras gen. nov. The consistently poor preservation of the internal shell of specimens of Hinlopoceras gen. nov. in beds where internal features of Svalbardoceras gen. nov. are better preserved indicates that the septa were originally more fragile and sensitive to early dissolution and/or implosion. Species of Hinlopoceras gen. nov. can be distinguished from species of Svalbardoceras gen. nov. by their distinct ornamentation; in Hinlopoceras gen. nov. the conch is ornamented with transverse bands or striae, in Svalbardoceras gen. nov. the ornament consists of fine irregularly spaced growth lines. Published ... |
format |
Other/Unknown Material |
author |
Kröger, Björn Pohle, Alexander |
author_facet |
Kröger, Björn Pohle, Alexander |
author_sort |
Kröger, Björn |
title |
Hinlopoceras Kröger & Pohle 2021, gen. nov. |
title_short |
Hinlopoceras Kröger & Pohle 2021, gen. nov. |
title_full |
Hinlopoceras Kröger & Pohle 2021, gen. nov. |
title_fullStr |
Hinlopoceras Kröger & Pohle 2021, gen. nov. |
title_full_unstemmed |
Hinlopoceras Kröger & Pohle 2021, gen. nov. |
title_sort |
hinlopoceras kröger & pohle 2021, gen. nov. |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://doi.org/10.5281/zenodo.5793486 |
genre |
Hinlopen Strait Svalbard |
genre_facet |
Hinlopen Strait Svalbard |
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), 23-24, (2021-12-20) |
op_relation |
https://doi.org/10.5852/ejt.2021.783.1601 http://zenodo.org/record/5793422 http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 https://sibils.text-analytics.ch/search/collections/plazi/5F4487ACFFBAFFB9FDB07C9EFDEF7945 https://www.gbif.org/species/191693622 https://www.checklistbank.org/dataset/2884/taxon/5F4487ACFFBAFFB9FDB07C9EFDEF7945.taxon http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5793485 https://doi.org/10.5281/zenodo.5793486 oai:zenodo.org:5793486 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.579348610.5852/ejt.2021.783.160110.5281/zenodo.5793485 |
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1810448468023443456 |