Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2016.09.006 |
Hyoliths are Palaeozoic lophophorates | |
Moysiuk, Joseph1; Smith, Martin R.2,3; Caron, Jean-Bernard1,4 | |
2017-01-19 | |
发表期刊 | NATURE
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ISSN | 0028-0836 |
EISSN | 1476-4687 |
出版年 | 2017 |
卷号 | 541期号:7637页码:394-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; England |
英文摘要 | Hyoliths are abundant and globally distributed 'shelly' fossils that appear early in the Cambrian period and can be found throughout the 280 million year span of Palaeozoic strata(1,2). The ecological and evolutionary importance of this group has remained unresolved, largely because of their poorly constrained soft anatomy and idiosyncratic scleritome, which comprises an operculum, a conical shell and, in some taxa, a pair of lateral spines (helens)(3-5). Since their first description over 175 years ago, hyoliths have most often been regarded as incertae sedis(4,6), related to molluscs(7,8) or assigned to their own phylum(1,2). Here we examine over 1,500 specimens of the mid-Cambrian hyolith Haplophrentis from the Burgess Shale and Spence Shale Lagerstatten. We reconstruct Haplophrentis as a semi-sessile, epibenthic suspension feeder that could use its helens to elevate its tubular body above the sea floor(3,9-12). Exceptionally preserved soft tissues include an extendable, gullwing-shaped, tentacle-bearing organ surrounding a central mouth, which we interpret as a lophophore, and a U-shaped digestive tract ending in a dorsolateral anus. Together with opposing bilateral sclerites and a deep ventral visceral cavity, these features indicate an affinity with the lophophorates (brachiopods, phoronids and tommotiids), substantially increasing the morphological disparity of this prominent group. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396128800042 |
WOS关键词 | BURGESS SHALE ; SHELLED BRACHIOPODS ; CANADIAN ROCKIES ; SOUTH-AUSTRALIA ; ASSEMBLAGE ; BIOLOGY ; CHINA |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/15291 |
专题 | 地球科学 |
作者单位 | 1.Univ Toronto, Dept Ecol & Evolutionary Biol & Earth Sci, 25 Willcocks St, Toronto, ON M5S 3B2, Canada; 2.Univ Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England; 3.Univ Durham, Dept Earth Sci, Mountjoy Site,South Rd, Durham DH1 3LE, England; 4.Royal Ontario Museum, Dept Nat Hist, 100 Queens Pk, Toronto, ON M5S 2C6, Canada |
推荐引用方式 GB/T 7714 | Moysiuk, Joseph,Smith, Martin R.,Caron, Jean-Bernard. Hyoliths are Palaeozoic lophophorates[J]. NATURE,2017,541(7637):394-+. |
APA | Moysiuk, Joseph,Smith, Martin R.,&Caron, Jean-Bernard.(2017).Hyoliths are Palaeozoic lophophorates.NATURE,541(7637),394-+. |
MLA | Moysiuk, Joseph,et al."Hyoliths are Palaeozoic lophophorates".NATURE 541.7637(2017):394-+. |
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