FIGURE 1. Ages and stratigraphic correlation chart of the Miocene portion of the Chesapeake Group. The age range of the Newport News beds in Virginia is shown in relationship to coeval sediments from the Popes Creek Sand (= PCS and PC Sand) in the Fairhaven Member of the Calvert Formation up through and including Shattuck Zone 11 within the Plum Point Member also of the Calvert Formation. Modified from Weems and Edwards (2007), Ward and Andrews (2008), Powars et al. (2015), Kidwell et al. (2015), Weems et al. (2017), and Vogt et al. (2018), with additional help in the placement of the Newport News beds from Robert E. Weems.
FIGURE 2. CMM-V-11695, a Miocene vertebrate coprolite preserving an impression of the dorsal surface of a cymothoid isopod, Calverteca osbornei gen. et sp. nov. A. View of the length of the coprolite and the body impression of the cymothoid isopod. B. Enlarged view of the end of the coprolite and the isopod body impression. The anterior end of the isopod is oriented upward. The coprolite was dusted with sublimed ammonium chloride to highlight detail and improve contrast. White scale bars equal 10 mm.
FIGURE 3. Enlarged view of a latex cast of the natural mold of the cymothoid isopod, Calverteca osbornei gen. et sp. nov., preserved in CMM-V-11695 (a Miocene vertebrate coprolite). White scale bar equals 1 mm.
