Hexactins in the 'protomonaxonid' sponge Choiaella and proposal of Ascospongiae (class nov.) as a formal replacement for the Protomonaxonida
文献类型：期刊论文
| 作者 | Botting, Joseph R.1,2 |
| 刊名 | BULLETIN OF GEOSCIENCES
 |
| 出版日期 | 2021 |
| 卷号 | 96期号:3页码:265-277 |
| 关键词 | Porifera Cambrian evolution protomonaxonid Choiaella sponge |
| ISSN号 | 1214-1119 |
| DOI | 10.3140/bull.geosci.1823 |
| 通讯作者 | Botting, Joseph R.(acutipuerilis@yahoo.co.uk) |
| 英文摘要 | The protomonaxonid sponges are a controversial early group with supposed ties to the demosponges, but the group also possesses features that imply a much earlier-branching position in sponge evolution. A new species, Choiaella hexactinophora sp. nov., shows a typical protomonaxonid body plan but also contains small hexactin-based spicules, a skeletal element today restricted to the class Hexactinellida, but which has been proposed to be plesiomorphic for Porifera and lost in the other living classes. This finding from the Castle Bank fauna (Middle Ordovician of the Builth Inlier, Wales, UK) confirms continuity of the protomonaxonid lineage, as hexactins are also known from fossils interpreted to be among the earliest members of the group. The presence of hexactins effectively rules out a demosponge affinity, and supports previous interpretations requiring the protomonaxonids to be treated as an earlybranching sponge clade rather than assigning them to an extant class. To facilitate this, this paper proposes a formal replacement of the majority of the group as the Ascospongiae nov., an extinct class within Porifera. |
| WOS关键词 | ORDOVICIAN ; PORIFERA ; SHALE ; BIOTA ; CALCARONEA ; DEMOSPONGE ; PHYLOGENY ; DIVERSITY ; WALES |
| 资助项目 | Holloway Bursary from the Warwickshire Geological Conservation Group |
| WOS研究方向 | Geology ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:000678010600002 |
| 出版者 | CZECH GEOLOGICAL SURVEY |
| 资助机构 | Holloway Bursary from the Warwickshire Geological Conservation Group |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/38453]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Botting, Joseph R. |
| 作者单位 | 1.Amgueddfa Cymru Natl Museum Wales, Dept Nat Sci, Cathays Pk, Cardiff CF10 3N1, Wales 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Botting, Joseph R.. Hexactins in the 'protomonaxonid' sponge Choiaella and proposal of Ascospongiae (class nov.) as a formal replacement for the Protomonaxonida[J]. BULLETIN OF GEOSCIENCES,2021,96(3):265-277. |
| APA | Botting, Joseph R..(2021).Hexactins in the 'protomonaxonid' sponge Choiaella and proposal of Ascospongiae (class nov.) as a formal replacement for the Protomonaxonida.BULLETIN OF GEOSCIENCES,96(3),265-277. |
| MLA | Botting, Joseph R.."Hexactins in the 'protomonaxonid' sponge Choiaella and proposal of Ascospongiae (class nov.) as a formal replacement for the Protomonaxonida".BULLETIN OF GEOSCIENCES 96.3(2021):265-277. |
入库方式： OAI收割
来源：南京地质古生物研究所
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