For more than twenty years, the International Sub com mission on Cambrian Stratigraphy (ISCS) has been working untiringly for the global subdivision of the Cambrian System (see Peng et al. 2020 for review). Nonetheless, certain time slices remain problematic for division and correlation. One of the most challenging is the socalled Cambrian Series 2, including Stages 3 and 4
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.