Nonmarine Paleodictyon from the Carboniferous Albert Formation of southern New Brunswick

Abstract

This occurrence represents only the second formal recording of the ichnotaxon in a nonmarine setting, as elsewhere Paleodictyon is almost universally a deep-water flysch trace fossil, rarely a shallow marine neritic form. In the Albert Formation Paleodictyon is restricted to strata deposited in a freshwater shallow lacustrine environment and it occurs in association with the ichnotaxa Cochlichnus anguineus, Gordia marina, Helminthopsis tenuis, Palaeophycus striatus, Palaeophycus tubularis and Planolites. Vermiform organisms, possibly annelids, are suggested to have been potential producers of these nonmarine Paleodictyon that probably formed as a result of the regular intersection of simple burrow systems. -from Author