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 Acteon elegans (Lea, 1833) Figure 1S Monoptygma elegans Lea, 1833: 203, pl. 6, fig. 217. Type locality. Monroe Co., Claiborne Bluff, Alabama, USA; stratum: Gosport Sand (uppermost Claiborne Group); age: Eocene. Type material. Holotype, ANSP IP6011 (as "lectotype" [error] in Palmer 1937 : 499; as "type" in Richards 1968 : 128). Current taxonomic status. Acteon pomilius Conrad, 1833 ( Palmer and Brann 1966 ).