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Atlanta meteori Richter, 1972

This species can be recognised by a much narrower and pointy spire than Atlanta inclinata and Atlanta tokiokai. The spire sutures are also very shallow, giving the spire a very smooth appearance.

 

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  • Spire tall and triangular conical in shape with 5½ to 5¾ whorls.

  • The spire has no ornamentation and is strongly tilted relative to the plane of shell coiling. The spire is less broad than A. gibbosa.

  • The spire sutures are very shallow and the spire appears a smooth cone in SEM images.

  • The adult shell reaches 4 mm and is very transparent with an undulating surface. The keel inserts between the final and penultimate whorls in specimens over 1.5 mm

  • The umbilicus is narrow.

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

 

Similar species:

 

 

 

Further Reading:

 

Richter, G. 1974. The heteropods of the Meteor Expedition to the Indian Ocean 1964/65. ‘Meteor’ Forsthungsergebnisse, 17: 55–78.

 

Richter, G., 1990. Zur Kenntnis der Gattung Atlanta (IV). Die Atlanta inclinata-Gruppe (Prosobranchia: Heteropoda). Archiv für Molluskenkunde 119, 259–275.

 

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

 

Seapy, R.R., Lalli, C.M. & Wells, F. 2003. Heteropoda from Western Australian waters. In: The marine flora and fauna of Dampier, Western Australia (F.E. Wells, D.I. Walker & D.S. Jones, eds), pp. 513–546. Western Australian Museum, Perth.

 

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

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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.

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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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