All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Putative Ordovician green alga Krejciella reinterpreted as enteropneust hemichordate tube (Czech Republic)

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10456256" target="_blank" >RIV/00216208:11310/22:10456256 - isvavai.cz</a>

  • Result on the web

    <a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=E1Iz7yyEtJ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=E1Iz7yyEtJ</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.26879/1185" target="_blank" >10.26879/1185</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Putative Ordovician green alga Krejciella reinterpreted as enteropneust hemichordate tube (Czech Republic)

  • Original language description

    Fossil and extant representatives of Enteropneusta play an important role in the interpretation of early evolution of animals, such as echinoderms, hemichordates and chordates. However, remains of fossil Enteropneusta are rare. Re-examination of available specimens of organic tubes of the Ordovician putative green alga Krejciella putzken Obrhel 1968 does not show any morphological difference from the Cambrian Margaretia dorus Walcott, 1931. The latter species has been recently interpreted as an organic tube produced and inhabited by the worm-like enteropneust hemichordate Oesia disjuncta Walcott, 1911. However, the absence of the subterranean lateral extension in Ordovician specimens excludes the synonymy of Krejciella and Margaretia. Geographic distribution of Cambrian organic tubes classified as Margaretia Walcott, 1931 indicates a possible latitudinal control, as all occurrences are apparently restricted to tropical and subtropical belts when plotted in Cambrian palaeogeographic maps. In comparison, the occurrence of the herein studied specimens of Krejciella is restricted to cold-water localities of West Gondwana. The micropalaeontological analysis of a rock sample bearing one specimen of Krejciella shows the presence of moderately preserved chitinozoans, including the zonal species Linochitina pissotensis. This taxon is, for the first time, documented from the Prague Basin and determines the Middle/Late Ordovician boundary interval of the analysed sample. The herein studied specimens of Krejciella extend the record of organic tubes produced by enteropneust hemichordates both stratigraphically and palaeogeographically to the Middle/Late Ordovician cold-water area.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10505 - Geology

Result continuities

  • Project

    <a href="/en/project/GA18-14575S" target="_blank" >GA18-14575S: Fossil assemblages of Libeň and Letná formations (Upper Ordovician) - keys to the understanding of Fezouata and Tafilalt biotas of Morocco</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Palaeontologia Electronica

  • ISSN

    1935-3952

  • e-ISSN

    1094-8074

  • Volume of the periodical

    25

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    19

  • Pages from-to

    a25

  • UT code for WoS article

    000863086100001

  • EID of the result in the Scopus database

    2-s2.0-85136188858