basis of recordDolin L. & Dolin C. (1981). <i>Sphaerocypraea jacksonensis</i> (Johnson) from the Moodys Branch formation (Eocene), MisĀsissippi. <em>Mississippi Geology.</em> 2 (2): 17-18, pl. l., available online athttps://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_2_2.pdf[details]