Scolicia

    These tri-lobed Scolicia occurrences are found in fine-grained sandstone.  Meniscate spreiten provide insight into the direction the organism moved through the sediement.  Scolicia are interpreted to record echiniod (sea-urchin) movements within a near-shore sand-rich substrate.  These trace fossil occurrences are found as part of a Cruziana inchnofacies usually identified in Cretaceous shelfal deposits.  These Scolicia occurrences are found near Price, Utah in the Panther Tongue Member of the Star Point Formation.  Note the diagnostic central lobe of the actively back-filled burrows.

 

    Detail of Scolicia prisa occurrence -- Panther Tongue Member, Utah.  The trace fossils are seen looking down on the tops of distinct sandstone beds.

 

    Split whole-core expression Scolicia occurrences found within dune-scale cross-stratified sandstone.   Meniscoidal back-fill spreiten differ markedly from Zoophycos spreiten, which are sharply pointed.

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