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Quantitative methods used for understanding the taxonomy of acritarchs: a case study of the Middle Ordovician genus Frankea Burmann 1970.

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Title: Quantitative methods used for understanding the taxonomy of acritarchs: a case study of the Middle Ordovician genus Frankea Burmann 1970.
Authors: Wang, Wenhui1,2,3 (AUTHOR) wwhever@126.com, Monnet, Claude2 (AUTHOR), Servais, Thomas2,4 (AUTHOR)
Source: Palynology. Nov2017 Supplement, Vol. 41, p69-79. 11p.
Subjects: Acritarchs, Biological classification, Ordovician Period, Biostratigraphy, Morphometrics
Abstract: The triangular-shaped acritarch genusFrankea, which displays characteristically branched appendices, has considerable stratigraphical and palaeobiogeographical significance in the Ordovician. High intraspecific variability of terminal processes (appendices) numbers and process lengths withinFrankeasuggest that the genus could be suitable for use in studying the relationship between morphological characters and environmental conditions. Quantitative multivariate exploratory analyses onFrankeaindicate that the length of the appendices varies according to different localities and is most probably ecologically dependent and not age diagnostic as previously suggested. Principal components analyses and discriminant analyses are used to assess the original specific classification ofFrankea. The morphometric analyses suggest that usage of quantitative characters, such as the process length, should be taken into consideration during the separation of species. A comprehensive discussion of qualitative and quantitative characters is carried out and suggests there are only three species ofFrankea: F. hamata, F. hamulata and F. sartbernardensis. [ABSTRACT FROM PUBLISHER]
Copyright of Palynology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Quantitative methods used for understanding the taxonomy of acritarchs: a case study of the Middle Ordovician genus Frankea Burmann 1970.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Wenhui%22">Wang, Wenhui</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> wwhever@126.com</i><br /><searchLink fieldCode="AR" term="%22Monnet%2C+Claude%22">Monnet, Claude</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Servais%2C+Thomas%22">Servais, Thomas</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Palynology%22">Palynology</searchLink>. Nov2017 Supplement, Vol. 41, p69-79. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Acritarchs%22">Acritarchs</searchLink><br /><searchLink fieldCode="DE" term="%22Biological+classification%22">Biological classification</searchLink><br /><searchLink fieldCode="DE" term="%22Ordovician+Period%22">Ordovician Period</searchLink><br /><searchLink fieldCode="DE" term="%22Biostratigraphy%22">Biostratigraphy</searchLink><br /><searchLink fieldCode="DE" term="%22Morphometrics%22">Morphometrics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The triangular-shaped acritarch genusFrankea, which displays characteristically branched appendices, has considerable stratigraphical and palaeobiogeographical significance in the Ordovician. High intraspecific variability of terminal processes (appendices) numbers and process lengths withinFrankeasuggest that the genus could be suitable for use in studying the relationship between morphological characters and environmental conditions. Quantitative multivariate exploratory analyses onFrankeaindicate that the length of the appendices varies according to different localities and is most probably ecologically dependent and not age diagnostic as previously suggested. Principal components analyses and discriminant analyses are used to assess the original specific classification ofFrankea. The morphometric analyses suggest that usage of quantitative characters, such as the process length, should be taken into consideration during the separation of species. A comprehensive discussion of qualitative and quantitative characters is carried out and suggests there are only three species ofFrankea: F. hamata, F. hamulata and F. sartbernardensis. [ABSTRACT FROM PUBLISHER]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Palynology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1080/01916122.2017.1366206
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 69
    Subjects:
      – SubjectFull: Acritarchs
        Type: general
      – SubjectFull: Biological classification
        Type: general
      – SubjectFull: Ordovician Period
        Type: general
      – SubjectFull: Biostratigraphy
        Type: general
      – SubjectFull: Morphometrics
        Type: general
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      – TitleFull: Quantitative methods used for understanding the taxonomy of acritarchs: a case study of the Middle Ordovician genus Frankea Burmann 1970.
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              Text: Nov2017 Supplement
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