Ephemeral Marks in river-margin substratum produced by the akene of the Spiny cocklebur (Xanthium spinosum): possible trace fossil implications

Abstract

The occurrence, for the first time, of the Xanthium spinosum traces completes the list of pseudotraces produced by plant remains. The neoichnological study of this physical structure is important because it provides useful information to paleoichnology in the effort to discriminate nonbiotic traces from biotic traces present in geological formations of different ages.