01259nas a2200145 4500008004100000245011900041210006900160300001400229490000700243520073100250653002500981100001601006700001801022856007301040 1984 eng d00aClassification and Conodont-based Sge of the Ordovician Trilobite Ellsaspis (middle Arenigian, Ville Guay, Quebec)0 aClassification and Conodontbased Sge of the Ordovician Trilobite a1483-14900 v213 a

Ellsaspis Rasetti, 1945 occurs in a thin intraclast granule and echinoderm hash packstone in continental slope facies at Ville Guay. Presence of an anterior median glabellar node and assignment of a previously unrecognized pygdium to the type species support its classification as an endymioniine trilobite. Associated conodonts of the platform margin Juanognathus biofacies, a chitinozoan, and shelf-derived orthids indicate a correlation with the middle Arenigian and upper Canadian. Association of the conodonts Prioniodus evae and P. elegans precludes a precise correlation with the condensed sequences of the Baltic Basin.

10ageology paleontology1 aLanding, E.1 aLudvigsen, R. uhttp://www.nrcresearchpress.com/doi/abs/10.1139/e84-153#.VuWP6HprWqw