See more from this Division: General Discipline Sessions
See more from this Session: Paleontology I - Macroevolution, Diversity, and Biogeography
Abstract:
We examined Cruziana specimens from across the United States, ranging from the lower Cambrian to the lower Pennsylvanian. Distinctions between different species of Cruziana are based on appendage impressions and scratch patterns. Comparative analysis of North American Cruziana using morphological variation, specifically limb differentiation and overall size and shape of both the trace and its internal markings, indicates that stratigraphic correlation is possible on the Laurentian paleocontinent. However, fundamental differences between peri-Gondwanan/Gondwanan and Laurentian forms of Cruziana suggest that global correlation may not be possible. ¹ Seilacher, A., 2007, Trace Fossil Analysis: Berlin Heidelberg, Springer-Verlag, 191 p., 66 pl.
See more from this Division: General Discipline Sessions
See more from this Session: Paleontology I - Macroevolution, Diversity, and Biogeography