Journal
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
Volume 290, Issue 1-3, Pages 65-74Publisher
E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG
DOI: 10.1127/njgpa/2018/0767
Keywords
Devonian; Tafilalt; ichnofossils; ichnofacies; palaeoecology
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Funding
- Swiss National Science Foundation [200020_132870]
- Swiss National Science Foundation (SNF) [200020_132870] Funding Source: Swiss National Science Foundation (SNF)
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Shaly and marly sedimentary rocks of late Lochkovian to Pragian and latest Emsian age yielded carbonatic conical structures several centimeters in size. These are filled with a coarse-grained bioclastic sediment with concentric conical fill-structures. We interpret these structures as the trace-fossil Conichnus, which usually is interpreted as a trace of soft-bottom dwelling sea-anemones (Actiniaria). These findings show that soft-bodied coelenterates were a common element of benthic ecosystems representing the softground marine Cruziana or Skolithos ichnofacies of the northern Gondwana shelf during the Early Devonian.
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