Sibogaster Doderlein 1924
Sibogaster Döderlein, 1924 Döderlein, 1924: 63; A.M. Clark 1993: 283 (checklist only) Type species. S. digitatus (by monotypy) Taxonomic comments. Sibogaster has not been collected since its original description by Döderlein (1924). The second species, S. nieseni , n. sp. described below expands the...
Main Author: | |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Zenodo
2016
|
Subjects: | |
Online Access: | https://dx.doi.org/10.5281/zenodo.6055258 https://zenodo.org/record/6055258 |
id |
ftdatacite:10.5281/zenodo.6055258 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.5281/zenodo.6055258 2023-05-15T13:47:13+02:00 Sibogaster Doderlein 1924 Mah, Christopher L. 2016 https://dx.doi.org/10.5281/zenodo.6055258 https://zenodo.org/record/6055258 unknown Zenodo http://zenodo.org/record/257286 http://publication.plazi.org/id/690EFFC1FF8FFFE85C67FF96857BFFB8 http://zoobank.org/B264C215-000D-42C5-8AC9-B801872CD182 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4175.2.1 http://zenodo.org/record/257286 http://publication.plazi.org/id/690EFFC1FF8FFFE85C67FF96857BFFB8 http://zoobank.org/B264C215-000D-42C5-8AC9-B801872CD182 https://dx.doi.org/10.5281/zenodo.6055257 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 Echinodermata Asteroidea Valvatida Goniasteridae Sibogaster article-journal ScholarlyArticle Taxonomic treatment Text 2016 ftdatacite https://doi.org/10.5281/zenodo.6055258 https://doi.org/10.11646/zootaxa.4175.2.1 https://doi.org/10.5281/zenodo.6055257 2022-04-01T09:59:55Z Sibogaster Döderlein, 1924 Döderlein, 1924: 63; A.M. Clark 1993: 283 (checklist only) Type species. S. digitatus (by monotypy) Taxonomic comments. Sibogaster has not been collected since its original description by Döderlein (1924). The second species, S. nieseni , n. sp. described below expands the concept of Sibogaster based on greater character variation, including further differences in glassy bosses among species. The type species, S. digitatus possesses glassy bosses embedded on flattened, abutted abactinal plates, a character which is shared by Plinthaster and Astroceramus . Both species of Sibogaster presented herein possess bare abactinal plates with no surficial granules or other accessories. Granules on superomarginal plates in Sibogaster are either weakly expressed or absent. Superomarginals in both species are elongate (L>W) interradially. Sibogaster shares a strong affinity with Pergamaster particularly Pergamaster incertus (Bell, 1908). Both S. nieseni and P. incertus are devoid of abactinal granules, have similar marginal plate arrangement and morphology and similar overall body shape. They differ in that granule and abactinal plate shapes and size are significantly different in size for similar-sized individuals and in that Pergamaster displays significantly larger and thicker subambulacral and furrow spines are significantly larger and thicker. Diagnosis. Abactinal plates smooth, bare (no accessories on plate surface-although embedded glassy bosses present in S. digitatus ), weakly convex, round to polygonal in outline. Marginal plates elongate, mostly smooth, bare ( S. digitatus has fewer than 6 granules on one or two interradial superomarginals). Inferomarginals adjacent to actinal surface covered with variably abundant granules. Actinal plates covered by granules. Adambulacral plates rectangular in shape. Furrow spines numerous, six to 15. Subambulacrals. thickened relative to furrow spines, remaining granulation identical to others on actinal surface. : Published as part of Mah, Christopher L., 2016, Deep-sea (> 1000 m) Goniasteridae (Valvatida; Asteroidea) from the North Pacific, including an overview of Sibogaster, Bathyceramaster n. gen. and three new species, pp. 101-141 in Zootaxa 4175 (2) on page 129, DOI: 10.11646/zootaxa.4175.2.1, http://zenodo.org/record/257286 : {"references": ["Doderlein, L. (1924) Die Asteriden der Siboga-Exped. II. Pentagonasteridae. Siboga-Expedition, 46 (2), 49 - 69, pls. 14 - 19.", "Clark, A. M. (1993) An index of names of recent Asteroidea - Part 2: Valvatida. E chinoderm Studies, 4, 187 - 366.", "Bell, F. J. (1908) Echinoderma. National Antarctic Expedition, London. Natural History, Zoology, 4, 1 - 16, 5 pls."]} Text Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Echinodermata Asteroidea Valvatida Goniasteridae Sibogaster |
spellingShingle |
Biodiversity Taxonomy Animalia Echinodermata Asteroidea Valvatida Goniasteridae Sibogaster Mah, Christopher L. Sibogaster Doderlein 1924 |
topic_facet |
Biodiversity Taxonomy Animalia Echinodermata Asteroidea Valvatida Goniasteridae Sibogaster |
description |
Sibogaster Döderlein, 1924 Döderlein, 1924: 63; A.M. Clark 1993: 283 (checklist only) Type species. S. digitatus (by monotypy) Taxonomic comments. Sibogaster has not been collected since its original description by Döderlein (1924). The second species, S. nieseni , n. sp. described below expands the concept of Sibogaster based on greater character variation, including further differences in glassy bosses among species. The type species, S. digitatus possesses glassy bosses embedded on flattened, abutted abactinal plates, a character which is shared by Plinthaster and Astroceramus . Both species of Sibogaster presented herein possess bare abactinal plates with no surficial granules or other accessories. Granules on superomarginal plates in Sibogaster are either weakly expressed or absent. Superomarginals in both species are elongate (L>W) interradially. Sibogaster shares a strong affinity with Pergamaster particularly Pergamaster incertus (Bell, 1908). Both S. nieseni and P. incertus are devoid of abactinal granules, have similar marginal plate arrangement and morphology and similar overall body shape. They differ in that granule and abactinal plate shapes and size are significantly different in size for similar-sized individuals and in that Pergamaster displays significantly larger and thicker subambulacral and furrow spines are significantly larger and thicker. Diagnosis. Abactinal plates smooth, bare (no accessories on plate surface-although embedded glassy bosses present in S. digitatus ), weakly convex, round to polygonal in outline. Marginal plates elongate, mostly smooth, bare ( S. digitatus has fewer than 6 granules on one or two interradial superomarginals). Inferomarginals adjacent to actinal surface covered with variably abundant granules. Actinal plates covered by granules. Adambulacral plates rectangular in shape. Furrow spines numerous, six to 15. Subambulacrals. thickened relative to furrow spines, remaining granulation identical to others on actinal surface. : Published as part of Mah, Christopher L., 2016, Deep-sea (> 1000 m) Goniasteridae (Valvatida; Asteroidea) from the North Pacific, including an overview of Sibogaster, Bathyceramaster n. gen. and three new species, pp. 101-141 in Zootaxa 4175 (2) on page 129, DOI: 10.11646/zootaxa.4175.2.1, http://zenodo.org/record/257286 : {"references": ["Doderlein, L. (1924) Die Asteriden der Siboga-Exped. II. Pentagonasteridae. Siboga-Expedition, 46 (2), 49 - 69, pls. 14 - 19.", "Clark, A. M. (1993) An index of names of recent Asteroidea - Part 2: Valvatida. E chinoderm Studies, 4, 187 - 366.", "Bell, F. J. (1908) Echinoderma. National Antarctic Expedition, London. Natural History, Zoology, 4, 1 - 16, 5 pls."]} |
format |
Text |
author |
Mah, Christopher L. |
author_facet |
Mah, Christopher L. |
author_sort |
Mah, Christopher L. |
title |
Sibogaster Doderlein 1924 |
title_short |
Sibogaster Doderlein 1924 |
title_full |
Sibogaster Doderlein 1924 |
title_fullStr |
Sibogaster Doderlein 1924 |
title_full_unstemmed |
Sibogaster Doderlein 1924 |
title_sort |
sibogaster doderlein 1924 |
publisher |
Zenodo |
publishDate |
2016 |
url |
https://dx.doi.org/10.5281/zenodo.6055258 https://zenodo.org/record/6055258 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://zenodo.org/record/257286 http://publication.plazi.org/id/690EFFC1FF8FFFE85C67FF96857BFFB8 http://zoobank.org/B264C215-000D-42C5-8AC9-B801872CD182 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4175.2.1 http://zenodo.org/record/257286 http://publication.plazi.org/id/690EFFC1FF8FFFE85C67FF96857BFFB8 http://zoobank.org/B264C215-000D-42C5-8AC9-B801872CD182 https://dx.doi.org/10.5281/zenodo.6055257 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.6055258 https://doi.org/10.11646/zootaxa.4175.2.1 https://doi.org/10.5281/zenodo.6055257 |
_version_ |
1766246784673251328 |