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 Acteocina crassiplica (Conrad, 1848) Figure 1 E-F Bulla crassiplica Conrad, 1848a: 282. Type locality. Dr. Smith's plantation, 6 miles northeast of Vicksburg, Warren County, Mississippi, USA; stratum: Vicksburg Group; age: Oligocene. Type material. Lectotype, ANSP IP13412 (designation in Moore 1962 : 51, Richards 1968 : 119, MacNeil and Dockery 1984 : 240); paralectotypes, ANSP 13413, 6 shells (as "paratype" in Richards 1968 : 119, MacNeil and Dockery 1984 : 240). Current taxonomic status. Acteocina crassiplica (Conrad, 1848) ( MacNeil and Dockery 1984 ).