| Schwartziella catesbyana (dOrbigny, 1842) Catesby’s Risso | 
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| Howard Park, Tarpon Springs, Pinellas Co., Florida. Digital image by Marlo Krisberg. | 
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| Beach drift, Barra Grande, Bahia, Brazil. All four specimens measure about 2.5 mm. Digital images by David Kirsh. | 
| Scanning Electron Micrographs | 
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| In shell/bryozoan hash from one fathom off the town of Cedar Key, Levy County, Florida, 5/2019 (0.72 mm.). SEM produced in collaboration with Dr. Ann Heatherington, Dept. Geological Sciences, University of Florida, Gainesville, FL. | 
| Type Figure | 
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| d'Orbigny, A., [1842] "1853." Mollusques. Histoire Physique, Politique et Naturelle de l'île de Cuba 2 1-112, pls. 10-21(?). Arthus Bertrand: Paris. |