Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid
Based on the examination of type and newly discovered specimens, the scope of the calloporid genus Pyriporoides Hayward & Thorpe, 1989 is expanded to include Daisyella Gordon, 1989. All species of Pyriporoides have colonies of branching uniserial runners and acleithral ovicells that are borne on...
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ftmagnoliapress:oai:ojs.mapress.com:article/19367 2023-05-15T13:51:20+02:00 Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid GORDON, DENNIS P. TAYLOR, PAUL D. 2017-03-10 application/pdf http://www.mapress.com/j/zt/article/view/zootaxa.4242.2.1 https://doi.org/10.11646/zootaxa.4242.2.1 eng eng Mangolia Press http://www.mapress.com/j/zt/article/view/zootaxa.4242.2.1/10449 Copyright (c) 2017 Magnolia press Zootaxa; Vol 4242, No 2: 10 Mar. 2017; 201–232 1175-5334 1175-5326 10.11646/zootaxa.4242.2 Bryozoa Calloporidae new genera new species New Zealand subantarctic Antarctica Eocene Oligocene colony morphology runners spots info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 ftmagnoliapress https://doi.org/10.11646/zootaxa.4242.2.1 2018-08-24T16:28:45Z Based on the examination of type and newly discovered specimens, the scope of the calloporid genus Pyriporoides Hayward & Thorpe, 1989 is expanded to include Daisyella Gordon, 1989. All species of Pyriporoides have colonies of branching uniserial runners and acleithral ovicells that are borne on and/or develop concurrently with a distal heterozooid, not the distal autozooid. The ooecial heterozooid is usually kenozooidal but can be avicularian. Correlated characters include, inter alia: a raised granular rim that encloses a generally well-developed cryptocystal shelf, and a longitudinally elongate opesia that may be constricted and asymmetrical. Articulated perioral/pericryptocystal spines are present as well as occasional accessory spines borne on the lateral gymnocyst. Pyriporoides is mostly austral in distribution, ranging from the southern Indian Ocean and New Zealand’s subantarctic islands to West Antarctica, with an outlier in the northeast Atlantic. Three additional genera, one little known, two new to science, have species with small, mostly spot-like, colonies that share most of the zooidal characters of Pyriporoides and so are described and discussed in this context. These genera are Apiophragma Hayward & Ryland, 1993, Olisthella n. gen. and Bryobrownius n. gen. A cladistic analysis of the taxa described herein plus selected outgroup species of Calloporidae and Pyrisinellidae identified an apparent clade within or derived from Calloporidae, the significance of which is discussed. Article in Journal/Newspaper Antarc* Antarctica Northeast Atlantic West Antarctica Magnolia press Austral West Antarctica Indian New Zealand Hayward ENVELOPE(167.350,167.350,-78.117,-78.117) Zootaxa 4242 2 201 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Bryozoa Calloporidae new genera new species New Zealand subantarctic Antarctica Eocene Oligocene colony morphology runners spots |
spellingShingle |
Bryozoa Calloporidae new genera new species New Zealand subantarctic Antarctica Eocene Oligocene colony morphology runners spots GORDON, DENNIS P. TAYLOR, PAUL D. Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid |
topic_facet |
Bryozoa Calloporidae new genera new species New Zealand subantarctic Antarctica Eocene Oligocene colony morphology runners spots |
description |
Based on the examination of type and newly discovered specimens, the scope of the calloporid genus Pyriporoides Hayward & Thorpe, 1989 is expanded to include Daisyella Gordon, 1989. All species of Pyriporoides have colonies of branching uniserial runners and acleithral ovicells that are borne on and/or develop concurrently with a distal heterozooid, not the distal autozooid. The ooecial heterozooid is usually kenozooidal but can be avicularian. Correlated characters include, inter alia: a raised granular rim that encloses a generally well-developed cryptocystal shelf, and a longitudinally elongate opesia that may be constricted and asymmetrical. Articulated perioral/pericryptocystal spines are present as well as occasional accessory spines borne on the lateral gymnocyst. Pyriporoides is mostly austral in distribution, ranging from the southern Indian Ocean and New Zealand’s subantarctic islands to West Antarctica, with an outlier in the northeast Atlantic. Three additional genera, one little known, two new to science, have species with small, mostly spot-like, colonies that share most of the zooidal characters of Pyriporoides and so are described and discussed in this context. These genera are Apiophragma Hayward & Ryland, 1993, Olisthella n. gen. and Bryobrownius n. gen. A cladistic analysis of the taxa described herein plus selected outgroup species of Calloporidae and Pyrisinellidae identified an apparent clade within or derived from Calloporidae, the significance of which is discussed. |
format |
Article in Journal/Newspaper |
author |
GORDON, DENNIS P. TAYLOR, PAUL D. |
author_facet |
GORDON, DENNIS P. TAYLOR, PAUL D. |
author_sort |
GORDON, DENNIS P. |
title |
Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid |
title_short |
Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid |
title_full |
Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid |
title_fullStr |
Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid |
title_full_unstemmed |
Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid |
title_sort |
resolving the status of pyriporoides and daisyella (bryozoa: cheilostomata), with the systematics of some additional taxa of calloporoidea having an ooecial heterozooid |
publisher |
Mangolia Press |
publishDate |
2017 |
url |
http://www.mapress.com/j/zt/article/view/zootaxa.4242.2.1 https://doi.org/10.11646/zootaxa.4242.2.1 |
long_lat |
ENVELOPE(167.350,167.350,-78.117,-78.117) |
geographic |
Austral West Antarctica Indian New Zealand Hayward |
geographic_facet |
Austral West Antarctica Indian New Zealand Hayward |
genre |
Antarc* Antarctica Northeast Atlantic West Antarctica |
genre_facet |
Antarc* Antarctica Northeast Atlantic West Antarctica |
op_source |
Zootaxa; Vol 4242, No 2: 10 Mar. 2017; 201–232 1175-5334 1175-5326 10.11646/zootaxa.4242.2 |
op_relation |
http://www.mapress.com/j/zt/article/view/zootaxa.4242.2.1/10449 |
op_rights |
Copyright (c) 2017 Magnolia press |
op_doi |
https://doi.org/10.11646/zootaxa.4242.2.1 |
container_title |
Zootaxa |
container_volume |
4242 |
container_issue |
2 |
container_start_page |
201 |
_version_ |
1766255159888838656 |