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- Peng, ShanchiNanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (author)
Intraspecific variation and taphonomic alteration in the Cambrian (Furongian) agnostoid Lotagnostus amerkanus: new information from China
- Article/chapterEnglish2015
Publisher, publication year, extent ...
- Czech Geological Survey,2015
Numbers
- LIBRIS-ID:oai:lup.lub.lu.se:a8d155e1-d0e4-43c8-a569-2d8ad3fd8617
- https://lup.lub.lu.se/record/5403110URI
- https://doi.org/10.3140/bull.geosci.1500DOI
Supplementary language notes
- Language:English
- Summary in:English
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Classification
Notes
- The concept of the agnostoid arthropod species Lotagnostus americanus (Billings, 1860), which has been reported from numerous localities in the upper Furongian Series (Cambrian) of Laurentia, Gondwana, Baltica, Avalonia, and Siberia, is reviewed with emphasis on morphologic and taphonomic information afforded by large collections from Hunan in South China, Xinjiang in Northwest China, and Zhejiang in Southeast China. Comparisons are made with type and topotype material from Quebec, Canada, as well as material from elsewhere in Canada, the USA, the United Kingdom, Sweden, Russia, and Kazakhstan. The new information clarifies the limits of morphologic variability in L. americanus owing to ontogenetic changes and variation within holaspides, including inferred microevolution. It also provides details on apparent variation of taphonomic origin. The Chinese collections demonstrate a moderately wide variation in L. americanus, indicating that arguments favoring restriction of Lotagnostus species to narrowly defined, geographically restricted forms are unwarranted. Species described as L. trisectus (Salter, 1864), L. asiaticus Troedsson, 1937, and L. punctatus Lu, 1964, for example, fall within the range of variation observed in L. americanus, and are regarded as junior synonyms. The effaced form Lotagnosilis obscurus Palmer, 1955 is removed from synonymy with L. americanus. A review of the stratigraphic distribution of L. americanus as construed here shows that the earliest occurrences of the species in all regions of the world are nearly synchronous.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Geologi hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Geology hsv//eng
- China
- Cambrian
- Furongian
- agnostoid
- Lotagnostus americanus
- Quebec
Added entries (persons, corporate bodies, meetings, titles ...)
- Babcock, LorenLund University,Lunds universitet,Berggrundsgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Lithosphere and Biosphere Science,Department of Geology,Faculty of Science,Ohio State University(Swepub:lu)geol-lbo (author)
- Zhu, XuejianNanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (author)
- Ahlberg, PerLund University,Lunds universitet,Berggrundsgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Lithosphere and Biosphere Science,Department of Geology,Faculty of Science(Swepub:lu)geol-pah (author)
- Terfelt, FredrikLund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)geol-fte (author)
- Dai, TaoNanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (author)
- Nanjing Institute of Geology and Palaeontology, Chinese Academy of SciencesBerggrundsgeologi (creator_code:org_t)
Related titles
- In:Bulletin of Geosciences: Czech Geological Survey90:2, s. 281-3061214-11191802-8225
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- NATURAL SCIENCES
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