How valid is Cruziana Stratigraphy?

@article{Seilacher1994HowVI,
  title={How valid is Cruziana Stratigraphy?},
  author={A. Seilacher},
  journal={Geologische Rundschau},
  year={1994},
  volume={83},
  pages={752-758}
}
  • A. Seilacher
  • Published 1994
  • Geology
  • Geologische Rundschau
  • The stratigraphic value of trilobite burrows has recently been questioned because of a seemingly Ordovician form in the Lower Cambrian of Canada. Closer examination shows, however, that the Cambrian homeomorph (Cruziana pectinata n. sp.) has a significantly different scratch pattern. This raises the question whether the multiple scratches of the Ordovician Cruziana rugosa were also made by exopodites or by similarly shaped endopodites. 
    Cruziana traces from the Late Silurian (Pridoli) carbonate shelf of Saaremaa, Estonia
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