Teinostoma semistriatum (d'Orbigny, 1842)

Teinostoma semistriatum (d'Orbigny, 1842)
From beach drift, Calabash Bay, St. Elizabeth Parish, Jamaica (1.2 mm.). Digital images by David Kirsh.
Juvenile
Teinostoma semistriatum (d'Orbigny, 1842) Juvenile
From beach drift, Calabash Bay, St. Elizabeth Parish, Jamaica. Digital images by David Kirsh.
Scanning Electron Micrographs Of Fossil Specimen
Teinostoma semistriatum (d'Orbigny, 1842)

From Florida Pliocene - about three million years before present.