Alomasoma Zenkevitch 1958
Alomasoma sp. (Fig. 4B) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 5, Discovery 231, stn 13368#48, 48°49.64’N, 16°30.12’W, 4841 m, 17.III.1998, 1 ♀. DESCRIPTION Colour of trunk cream, proboscis white in preserved state. Proboscis truncate, 0.75 mm long, flattened and rounded distally; la...
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ftzenodo:oai:zenodo.org:4893239 2023-06-06T11:57:38+02:00 Alomasoma Zenkevitch 1958 Biseswar, Ramlall 2006-12-31 https://zenodo.org/record/4893239 https://doi.org/10.5281/zenodo.4893239 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03F53669FFEFFFF4FCE2BC93208EC793 doi:10.5281/zenodo.4689879 http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 doi:10.5281/zenodo.4689893 doi:10.5281/zenodo.4893238 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4893239 https://doi.org/10.5281/zenodo.4893239 oai:zenodo.org:4893239 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28(4) 862-863 Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Alomasoma info:eu-repo/semantics/other publication-taxonomictreatment 2006 ftzenodo https://doi.org/10.5281/zenodo.489323910.5281/zenodo.468987910.5281/zenodo.468989310.5281/zenodo.4893238 2023-04-13T21:57:45Z Alomasoma sp. (Fig. 4B) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 5, Discovery 231, stn 13368#48, 48°49.64’N, 16°30.12’W, 4841 m, 17.III.1998, 1 ♀. DESCRIPTION Colour of trunk cream, proboscis white in preserved state. Proboscis truncate, 0.75 mm long, flattened and rounded distally; lateral margins curl inwards and unite proximally forming narrow lower lip ventral to mouth (Fig. 4B). Trunk oval (Fig. 4B), 2.5 mm long and 2 mm across broadest part. Integument smooth, thin and transparent. Ventral setae absent. Gonoducts one pair, sac-like with eggs which unite proximally and open to exterior by single genital aperture. Gonostomes basal in position. Intestine filled with fine sand not moulded into faecal pellets. Rest of internal organs damaged. REMARKS The present specimen has been assigned to the genus Alomasoma Zenkevitch, 1958 on account of the presence of two gonoducts which unite proximally and open to the exterior via a common gonopore. This sexually mature specimen with a trunk length of 2.5 mm is extremely small in comparison with all the other species described in the genus. Therefore, it seems very likely that the specimen on hand represents an undescribed species. However, it is undesirable to erect a new species on the basis of single, incomplete individual. Additional material in the future will probably shed more light on its taxonomic position. Published as part of Biseswar, Ramlall, 2006, Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28 (4) on pages 862-863, DOI:10.5281/zenodo.4689879 Other/Unknown Material North East Atlantic Zenodo Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Alomasoma |
spellingShingle |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Alomasoma Biseswar, Ramlall Alomasoma Zenkevitch 1958 |
topic_facet |
Biodiversity Taxonomy Animalia Echiura Polychaeta Echiuroidea Bonelliidae Alomasoma |
description |
Alomasoma sp. (Fig. 4B) MATERIAL EXAMINED. — Porcupine Abyssal Plain, BEN- GAL 5, Discovery 231, stn 13368#48, 48°49.64’N, 16°30.12’W, 4841 m, 17.III.1998, 1 ♀. DESCRIPTION Colour of trunk cream, proboscis white in preserved state. Proboscis truncate, 0.75 mm long, flattened and rounded distally; lateral margins curl inwards and unite proximally forming narrow lower lip ventral to mouth (Fig. 4B). Trunk oval (Fig. 4B), 2.5 mm long and 2 mm across broadest part. Integument smooth, thin and transparent. Ventral setae absent. Gonoducts one pair, sac-like with eggs which unite proximally and open to exterior by single genital aperture. Gonostomes basal in position. Intestine filled with fine sand not moulded into faecal pellets. Rest of internal organs damaged. REMARKS The present specimen has been assigned to the genus Alomasoma Zenkevitch, 1958 on account of the presence of two gonoducts which unite proximally and open to the exterior via a common gonopore. This sexually mature specimen with a trunk length of 2.5 mm is extremely small in comparison with all the other species described in the genus. Therefore, it seems very likely that the specimen on hand represents an undescribed species. However, it is undesirable to erect a new species on the basis of single, incomplete individual. Additional material in the future will probably shed more light on its taxonomic position. Published as part of Biseswar, Ramlall, 2006, Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28 (4) on pages 862-863, DOI:10.5281/zenodo.4689879 |
format |
Other/Unknown Material |
author |
Biseswar, Ramlall |
author_facet |
Biseswar, Ramlall |
author_sort |
Biseswar, Ramlall |
title |
Alomasoma Zenkevitch 1958 |
title_short |
Alomasoma Zenkevitch 1958 |
title_full |
Alomasoma Zenkevitch 1958 |
title_fullStr |
Alomasoma Zenkevitch 1958 |
title_full_unstemmed |
Alomasoma Zenkevitch 1958 |
title_sort |
alomasoma zenkevitch 1958 |
publishDate |
2006 |
url |
https://zenodo.org/record/4893239 https://doi.org/10.5281/zenodo.4893239 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Curl |
geographic_facet |
Curl |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Additions to the deep-sea echiuran (Echiura) fauna of the North-East Atlantic, pp. 853-864 in Zoosystema 28(4) 862-863 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03F53669FFEFFFF4FCE2BC93208EC793 doi:10.5281/zenodo.4689879 http://publication.plazi.org/id/FFCC4E11FFE6FFFEFFBCB83C205BC137 doi:10.5281/zenodo.4689893 doi:10.5281/zenodo.4893238 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4893239 https://doi.org/10.5281/zenodo.4893239 oai:zenodo.org:4893239 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.489323910.5281/zenodo.468987910.5281/zenodo.468989310.5281/zenodo.4893238 |
_version_ |
1767965951128502272 |