Marginal marine trace fossils from the Cárdenas Formation (Maastrichtian), Rayón municipality, San Luis Potosí, Central Mexico

Abstract

The State of San Luis Potosí, Mexico, is rich in fossils and has a long-standing tradition of paleontological research. Nevertheless, most of these studies have been focused on vertebrates and invertebrates body fossils, with the ichnological record being overlooked. Here, we report the occurrence of ichnofossils (Diplocraterion parallelum, Ophiomorpha nodosa, Skolithos linearis, and Palaeophycus tubularis) from the Upper Cretaceous (Maastrichtian) Cárdenas Formation, southeastern San Luis Potosí. Invertebrate trace fossils and associated body fossils suggest that the Cárdenas Formation was deposited in a low to high energy system, with occasional storm events, in a shallow water platform (delta plain or coastal paleoenvironment influenced by tidal action).

Shallow marine trace-fossils from the Middle Miocene of the Tebessa Basin (NE Algeria) and their paleoenvironmental implications

“…It is characterized by a spreite which can be retrusive or protrusive, or both (Goldring, 1962(Goldring, , 1964 and fecal pellets can be also present (Knaust, 2017). Diplocraterion isp., known from Cambrian to the Recent (Mángano & Buatois, 2016), is generally documented in shallow marine settings (Knaust, 2017;Palma-Ramírez et al, 2019) and constitutes an important component of the Skolithos ichnofacies (Knaust, 2017).…”