Chondriovelum Hayward and Thorpe 1988
Genus Chondriovelum Hayward and Thorpe, 1988 (Figure 5) Type species Labioporella adeliense Livingstone, 1928, by original designation. Recent, Antarctic coastal waters (see Hayward 1995). Diagnosis Colony encrusting or developing erect, bifoliate branches. Autozooids rounded hexagonal; zooidal boun...
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ftzenodo:oai:zenodo.org:4747837 2024-09-15T17:41:10+00:00 Chondriovelum Hayward and Thorpe 1988 Taylor, Paul D. Martha, Silviu O. Gordon, Dennis P. 2018-07-03 https://doi.org/10.5281/zenodo.4747837 http://treatment.plazi.org/id/03EB8789FFE64478A16876F4FE1DFCE2 unknown Zenodo https://doi.org/10.1080/00222933.2018.1481235 http://zenodo.org/record/4747141 http://publication.plazi.org/id/FFD2FFF1FFE84477A00C7447FF92FFBE https://sibils.text-analytics.ch/search/collections/plazi/03EB8789FFE64478A16876F4FE1DFCE2 https://doi.org/10.5281/zenodo.4747151 http://zoobank.org/63A31AD2-F049-42CB-A45B-557014DC286E https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.4747836 https://doi.org/10.5281/zenodo.4747837 oai:zenodo.org:4747837 http://treatment.plazi.org/id/03EB8789FFE64478A16876F4FE1DFCE2 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Synopsis of ' onychocellid' cheilostome bryozoan genera, pp. 1657-1721 in Journal of Natural History (J. Nat. Hist.), 52(25 - 26), 1670-1671, (2018-07-03) Biodiversity Taxonomy Animalia Bryozoa Gymnolaemata Cheilostomatida Onychocellidae Chondriovelum info:eu-repo/semantics/other 2018 ftzenodo https://doi.org/10.5281/zenodo.474783710.1080/00222933.2018.148123510.5281/zenodo.474715110.5281/zenodo.4747836 2024-07-26T19:55:36Z Genus Chondriovelum Hayward and Thorpe, 1988 (Figure 5) Type species Labioporella adeliense Livingstone, 1928, by original designation. Recent, Antarctic coastal waters (see Hayward 1995). Diagnosis Colony encrusting or developing erect, bifoliate branches. Autozooids rounded hexagonal; zooidal boundaries raised with a medial groove. Cryptocyst extensive, granular. Gymnocyst lacking. Opesia terminal, occupying about one-third of frontal surface; semielliptical, wider than long, proximal edge convex, distal edge almost straight, lacking opesiular indentations or lateral constrictions (Figure 5 (a)). Ovicells unknown. Avicularia vicarious, asymmetrical (Figure 5 (b)), the same size as an autozooid; granular surface perforated by several small openings, usually a proximal median irregular opening (?opesia) followed by a pair of slit-like openings and a small distal opening; condyles lacking; rostrum acutely triangular, floor pustulose. Remarks Hayward and Thorpe (1988) compared Chondriovelum with Smittipora (see below), noting that their new genus had a more extensive cryptocyst and a long, curved distal groove in the avicularium to accommodate the rachis of the mandible. Apart from the type species, two other species have been assigned to Chondriovelum: Smittipora angustiloba Moyano, 1974, from the Magellanic region of Chile; and Chondriovelum fossilis Gordon and Taylor, 1999, a fossil from the Paleocene Red Bluff Tuff of the Chatham Islands, New Zealand. The opesia is proportionally larger in C. angustiloba than it is in C. adeliense and there are two rather than four openings in the cryptocyst of the avicularium. The Paleocene species C. fossilis also has two openings in the cryptocyst, the distal one large and identifiable as the opesia. Unlike the two Recent species, colonies of C. fossilis are erect with cylindrical branches (‘vincularian’). Gontar (2012, p. 207) claimed that Chondriovelum adeliense has an aragonite skeleton rather than the calcite skeleton that is usual for onychocellids and also for ... Other/Unknown Material Antarc* Antarctic Zenodo |
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Zenodo |
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unknown |
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Biodiversity Taxonomy Animalia Bryozoa Gymnolaemata Cheilostomatida Onychocellidae Chondriovelum |
spellingShingle |
Biodiversity Taxonomy Animalia Bryozoa Gymnolaemata Cheilostomatida Onychocellidae Chondriovelum Taylor, Paul D. Martha, Silviu O. Gordon, Dennis P. Chondriovelum Hayward and Thorpe 1988 |
topic_facet |
Biodiversity Taxonomy Animalia Bryozoa Gymnolaemata Cheilostomatida Onychocellidae Chondriovelum |
description |
Genus Chondriovelum Hayward and Thorpe, 1988 (Figure 5) Type species Labioporella adeliense Livingstone, 1928, by original designation. Recent, Antarctic coastal waters (see Hayward 1995). Diagnosis Colony encrusting or developing erect, bifoliate branches. Autozooids rounded hexagonal; zooidal boundaries raised with a medial groove. Cryptocyst extensive, granular. Gymnocyst lacking. Opesia terminal, occupying about one-third of frontal surface; semielliptical, wider than long, proximal edge convex, distal edge almost straight, lacking opesiular indentations or lateral constrictions (Figure 5 (a)). Ovicells unknown. Avicularia vicarious, asymmetrical (Figure 5 (b)), the same size as an autozooid; granular surface perforated by several small openings, usually a proximal median irregular opening (?opesia) followed by a pair of slit-like openings and a small distal opening; condyles lacking; rostrum acutely triangular, floor pustulose. Remarks Hayward and Thorpe (1988) compared Chondriovelum with Smittipora (see below), noting that their new genus had a more extensive cryptocyst and a long, curved distal groove in the avicularium to accommodate the rachis of the mandible. Apart from the type species, two other species have been assigned to Chondriovelum: Smittipora angustiloba Moyano, 1974, from the Magellanic region of Chile; and Chondriovelum fossilis Gordon and Taylor, 1999, a fossil from the Paleocene Red Bluff Tuff of the Chatham Islands, New Zealand. The opesia is proportionally larger in C. angustiloba than it is in C. adeliense and there are two rather than four openings in the cryptocyst of the avicularium. The Paleocene species C. fossilis also has two openings in the cryptocyst, the distal one large and identifiable as the opesia. Unlike the two Recent species, colonies of C. fossilis are erect with cylindrical branches (‘vincularian’). Gontar (2012, p. 207) claimed that Chondriovelum adeliense has an aragonite skeleton rather than the calcite skeleton that is usual for onychocellids and also for ... |
format |
Other/Unknown Material |
author |
Taylor, Paul D. Martha, Silviu O. Gordon, Dennis P. |
author_facet |
Taylor, Paul D. Martha, Silviu O. Gordon, Dennis P. |
author_sort |
Taylor, Paul D. |
title |
Chondriovelum Hayward and Thorpe 1988 |
title_short |
Chondriovelum Hayward and Thorpe 1988 |
title_full |
Chondriovelum Hayward and Thorpe 1988 |
title_fullStr |
Chondriovelum Hayward and Thorpe 1988 |
title_full_unstemmed |
Chondriovelum Hayward and Thorpe 1988 |
title_sort |
chondriovelum hayward and thorpe 1988 |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://doi.org/10.5281/zenodo.4747837 http://treatment.plazi.org/id/03EB8789FFE64478A16876F4FE1DFCE2 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Synopsis of ' onychocellid' cheilostome bryozoan genera, pp. 1657-1721 in Journal of Natural History (J. Nat. Hist.), 52(25 - 26), 1670-1671, (2018-07-03) |
op_relation |
https://doi.org/10.1080/00222933.2018.1481235 http://zenodo.org/record/4747141 http://publication.plazi.org/id/FFD2FFF1FFE84477A00C7447FF92FFBE https://sibils.text-analytics.ch/search/collections/plazi/03EB8789FFE64478A16876F4FE1DFCE2 https://doi.org/10.5281/zenodo.4747151 http://zoobank.org/63A31AD2-F049-42CB-A45B-557014DC286E https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.4747836 https://doi.org/10.5281/zenodo.4747837 oai:zenodo.org:4747837 http://treatment.plazi.org/id/03EB8789FFE64478A16876F4FE1DFCE2 |
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.474783710.1080/00222933.2018.148123510.5281/zenodo.474715110.5281/zenodo.4747836 |
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1810487304410628096 |