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 Cylichna cylindrus (Lea, 1846) Figure 6 I-J Bulla cylindrus Lea, 1846: 250-251, pl. 35, fig. 43. Type locality. Petersburg, Dinwiddie County, Virginia, USA; stratum: Yorktown Formation; age: Late Miocene to Middle Pliocene. Type material. Syntypes, ANSP IP1554, 1 shell ( Gardner 1948 : 279, pl. 38, fig. 27; as "type" in Richards 1968 : 122), ANSP IP79382, 1 shell ( Gardner 1948 : 279, pl. 38, fig. 28). Current taxonomic status. Cylichna cylindrus (Lea, 1846) ( Gardner 1948 ).