basis of recordKröger, B.; Evans, D. H. (2011). Review and palaeoecological analysis of the late Tremadocian - early Floian (Early Ordovician) cephalopod fauna of the Montagne Noire, France. <em>Fossil Record.</em> 14(1): 5-34., available online athttps://doi.org/10.1002/mmng.201000013 page(s): 20 [details] Available for editors