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Atlanta frontieri Richter, 1993

This species is recognised by the unique shape of the spire, which has a fine ledge of shell that runs around the whorl edges in the spire.


  • The spire has 4¼ to 4½ whorls and is quite flat across the top, apart from the first and second whorls that are elevated.

  • The spire has a fine ledge/ridge of shell that runs around the outer margin of the whorls in the spire. This is the only atlantid with such ornamentation.

  • The spire sutures are sometimes a purple colour.

  • Adult shells reach 5.5 mm

  • This species has not been found in the Atlantic Ocean.

  • Eyes type b, operculum type b, radula type II.


Similar species:


Further reading:


Richter, G. 1993. Zur Kenntnis der Gattung Atlanta, 5. Die Atlanta peroni-Gruppe und Atlanta gaudichaudi (Prosobranchia: Heteropoda). Archiv für Molluskenkunde, 122: 189–205.


Seapy, R.R. 2011. Atlantidae. In: Tree of life web project. Available at accessed 1 April 2017.


Wall-Palmer, D., Burridge, A.K., Goetze, E., Stokvis, F., Janssen, A.W., Mekkes, L., Moreno-Alcántara, M., Bednaršek, N., Schiøtte, T., Vinther Sørensen, M., Smart, C.W., Peijnenburg, K.T.C.A. Biogeography and genetic diversity of the atlantid heteropods. Progress in Oceanography, 160:1–25. doi: 10.1016/j.pocean.2017.11.004

Wall-Palmer, D., Metcalfe, B., Leng, M.J., Sloane, H.J., Ganssen, G., Vinayachandran, P.N., Smart, C.W. Vertical distribution and diurnal migration of atlantid heteropods. Marine Ecology Progress Series, 587: 1–15. doi: 10.3354/meps12464.

Wall-Palmer, D., Smart, C.W., Kirby, R., Hart, M.B., Peijnenburg, K.T.C.A., Janssen, A. 2016. A review of the ecology, palaeontology and distribution of atlantid heteropods (Caenogastropoda: Pterotracheoidea: Atlantidae). Journal of Molluscan Studies, 1-14.

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