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Reexamination of Yuknessia from the Cambrian of China and first report of Fuxianospira from North America

LoDuca, Steven T.; Wu, Mengyin; Zhao, Yuanlong; Xiao, Shuhai; Schiffbauer, James D.; Caron, Jean Bernard and Babcock, Loren E. LU (2015) In Journal of Paleontology 89(6). p.899-911
Abstract

Yuknessia Walcott, 1919 recently was transferred from the green algae to the Phylum Hemichordata on the basis of new details observed for the type species, Y. simplex, from the Burgess Shale Formation (Cambrian Stage 5) of British Columbia. This has prompted reexamination of material attributed to Yuknessia from various Cambrian localities in South China. Findings preclude both a Yuknessia and a hemichordate affinity for all of the Chinese study material, and most of this material is formally transferred to Fuxianospira Chen and Zhou, 1997, a taxon common in the Chengjiang biota. Comparable material from the Cambrian Marjum, Wheeler, and Burgess Shale formations of North America is also assigned to Fuxianospira, and this reassignment... (More)

Yuknessia Walcott, 1919 recently was transferred from the green algae to the Phylum Hemichordata on the basis of new details observed for the type species, Y. simplex, from the Burgess Shale Formation (Cambrian Stage 5) of British Columbia. This has prompted reexamination of material attributed to Yuknessia from various Cambrian localities in South China. Findings preclude both a Yuknessia and a hemichordate affinity for all of the Chinese study material, and most of this material is formally transferred to Fuxianospira Chen and Zhou, 1997, a taxon common in the Chengjiang biota. Comparable material from the Cambrian Marjum, Wheeler, and Burgess Shale formations of North America is also assigned to Fuxianospira, and this reassignment expands both the paleogeographic and stratigraphic range of this taxon. All aspects of the study specimens, including details obtained from scanning electron microscopy, are consistent with an algal affinity, as proposed in the original descriptions of the Chinese material.

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organization
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type
Contribution to journal
publication status
published
subject
in
Journal of Paleontology
volume
89
issue
6
pages
13 pages
publisher
Paleontological Society
external identifiers
  • scopus:84971433474
ISSN
0022-3360
DOI
10.1017/jpa.2016.3
language
English
LU publication?
yes
id
9a62ba4e-5108-4dba-a856-76cecf09d264
date added to LUP
2016-12-22 10:53:01
date last changed
2017-07-02 04:57:43
@article{9a62ba4e-5108-4dba-a856-76cecf09d264,
  abstract     = {<p>Yuknessia Walcott, 1919 recently was transferred from the green algae to the Phylum Hemichordata on the basis of new details observed for the type species, Y. simplex, from the Burgess Shale Formation (Cambrian Stage 5) of British Columbia. This has prompted reexamination of material attributed to Yuknessia from various Cambrian localities in South China. Findings preclude both a Yuknessia and a hemichordate affinity for all of the Chinese study material, and most of this material is formally transferred to Fuxianospira Chen and Zhou, 1997, a taxon common in the Chengjiang biota. Comparable material from the Cambrian Marjum, Wheeler, and Burgess Shale formations of North America is also assigned to Fuxianospira, and this reassignment expands both the paleogeographic and stratigraphic range of this taxon. All aspects of the study specimens, including details obtained from scanning electron microscopy, are consistent with an algal affinity, as proposed in the original descriptions of the Chinese material.</p>},
  author       = {LoDuca, Steven T. and Wu, Mengyin and Zhao, Yuanlong and Xiao, Shuhai and Schiffbauer, James D. and Caron, Jean Bernard and Babcock, Loren E.},
  issn         = {0022-3360},
  language     = {eng},
  month        = {11},
  number       = {6},
  pages        = {899--911},
  publisher    = {Paleontological Society},
  series       = {Journal of Paleontology},
  title        = {Reexamination of Yuknessia from the Cambrian of China and first report of Fuxianospira from North America},
  url          = {http://dx.doi.org/10.1017/jpa.2016.3},
  volume       = {89},
  year         = {2015},
}