Type specimens of fossil " Architectibranchia " and Cephalaspidea (Mollusca, Heterobranchia) in the Academy of Natural Sciences of Philadelphia Author Cunha, Carlo M. Author Salvador, Rodrigo B. text Zoosystematics and Evolution 2018 94 2 505 527 http://dx.doi.org/10.3897/zse.94.27401 journal article http://dx.doi.org/10.3897/zse.94.27401 1860-0743-2-505 09EC3F78C68C4F9CA76D008DDAE13B3E Bullopsis cretacea Conrad, 1858 Figure 5 C-D Bullopsis cretacea Conrad, 1858: 334. Type locality. Owl Creek, near Ripley, Tippah County, Mississippi, USA; stratum: "dark gray sandy marl" (Owl Creek Formation); age: Cretaceous. Type material. Holotype, IPANSP 18924 ( Conrad 1860 : pl. 46, fig. 27; as "type" in Richards 1968 : 120). Current taxonomic status. Bullopsis cretacea Conrad, 1858 ( Stephenson 1955 , Sohl 1964 ).