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 Volvulella tritica (Olsson & Harbison, 1953) Figure 6F Volvula tritica Olsson & Harbison, 1953: 163, pl. 25, figs 3-3a. Type locality. St. Petersburg, Pinellas County, Florida, USA; stratum: North St. Petersburg Beds; age: Plio-Pleistocene. Type material. Holotype, ANSP IP19104; paratypes, ANSP IP79270, 2 shells (all as "types" in Richards 1968 : 199). Current taxonomic status. Volvulella tritica (Olsson & Harbison, 1953) ( Portell and Kittle 2010 ).