A lower Silurian (Llandovery) diplobathrid crinoid (Camerata) from mid-Wales
文献类型：期刊论文
| 作者 | Fearnhead, Fiona E.2,3; Donovan, Stephen K.4; Botting, Joseph P.1,5; Muir, Lucy A.1 |
| 刊名 | GEOLOGICAL MAGAZINE
 |
| 出版日期 | 2020-07-01 |
| 卷号 | 157期号:7页码:1176-1180 |
| 关键词 | systematics Dimerocrinitidae Euptychocrinus preservation Telychian |
| ISSN号 | 0016-7568 |
| DOI | 10.1017/S0016756819001511 |
| 通讯作者 | Donovan, Stephen K.(Steve.Donovan@naturalis.nl) |
| 英文摘要 | Early Palaeozoic crinoids are known only patchily from the British Isles except for accumulations at starfish beds. A single, exquisitely preserved crinoid is reported from the Telychian (Llandovery, Silurian) of the Pysgotwr Grits Formation of the Llangurig area, Powys, mid-Wales. This sedimentary succession is turbiditic in origin and poorly fossiliferous. The crinoid is a diplobathrid camerate,Euptychocrinus longipinnulussp. nov., preserved as an external mould without counterpart. It has a high, shuttlecock-like crown; a conical, unsculptured cup; low infrabasals; a pair of long, slender, feather-like arms on each ray, each bearing numerous long pinnules; and a heteromorphic column. Most previous reports of this genus have been from the Upper Ordovician - lower Silurian series of Laurentia; uncertainly, it is described from the Upper Ordovician deposits of Morocco (Gondwana).Euptychocrinus longipinnulusis the first Avalonian occurrence. The beautiful preservation of the arms, including cover plates of pinnules, contrasts with the proxistele, which is a series of 'broken sticks'. This crinoid responded to an adverse environmental fluctuation, probably a turbidity current, by autotomizing the stem, but it was carried downslope and buried alive. |
| WOS关键词 | FAUNA ; STALK |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000546620700011 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/38626]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Donovan, Stephen K. |
| 作者单位 | 1.Amgueddfa Cymru Natl Museum Wales, Dept Nat Sci, Cathays Pk, Cardiff CF10 3NP, Wales 2.Nat Hist Museum, Angela Marmont Ctr, Cromwell Rd, London SW7 5BD, England 3.Garden Flat,61a,Highgate West Hill, London N6 6BU, England 4.Nat Biodivers Ctr, Taxon & Systemat Grp, Postbus 9517, NL-2300 RA Leiden, Netherlands 5.Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fearnhead, Fiona E.,Donovan, Stephen K.,Botting, Joseph P.,et al. A lower Silurian (Llandovery) diplobathrid crinoid (Camerata) from mid-Wales[J]. GEOLOGICAL MAGAZINE,2020,157(7):1176-1180. |
| APA | Fearnhead, Fiona E.,Donovan, Stephen K.,Botting, Joseph P.,&Muir, Lucy A..(2020).A lower Silurian (Llandovery) diplobathrid crinoid (Camerata) from mid-Wales.GEOLOGICAL MAGAZINE,157(7),1176-1180. |
| MLA | Fearnhead, Fiona E.,et al."A lower Silurian (Llandovery) diplobathrid crinoid (Camerata) from mid-Wales".GEOLOGICAL MAGAZINE 157.7(2020):1176-1180. |
入库方式： OAI收割
来源：南京地质古生物研究所
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