Sarah Sheffield, an Assistant Professor in the USF School of Geosciences, discusses her research into understanding phylogenetic relationships of major groups of echinoderms, and diversity and inclusivity of populations in the geosciences. More about Sarah can be found here: Selected Works USF SGS Faculty Webpage Personal Webpage Check out the Time Scavengers Blog here: Time Scavengers Blog       Calling: Earth is a production of the USF Libraries in cooperation with the USF School of Geosciences. Questions, comments, and any other feedback can be directed to callingearth@usf.edu.