Stars in the Silurian sky: Echinoderm holdfasts from the Carnic Alps, Austria
2016; Cartographic and Geological Institute of Catalonia; Volume: 14; Issue: 4 Linguagem: Inglês
10.1344/geologicaacta2016.14.4.1
ISSN1696-5728
AutoresAnnalisa Ferretti, William I. Ausich, Carlo Corradini, Maria Giovanna Corriga, Hans Peter Schönlaub,
Tópico(s)Methane Hydrates and Related Phenomena
ResumoA small collection of echinoderm holdfasts from the Ludlow Cardiola Formation of the Carnic Alps (Austria) contains a wide range of morphologies as a response of environmental adaptation. In general, the holdfasts have a globous and massive dome-like profile with several processes arranged in a sub-radial disposition, so to create a sort of ‘star-like’ outline. A small central depression is common but not present on all specimens. The distinctive holdfasts are preserved in an iron-rich phase, documenting a substitution that has also affected other non-echinoderm calcareous material.
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