Live individual of Telescopium telescopium, photographed by Ria Tan.

Belongs within: Cerithioidea.

The Potamididae are a family of marine gastropods, many species of which live among mangroves.

Characters (from Strong et al., in press): Aperture of shell flaring, with anterior siphon, medial sinus on outer lip; growth determinate, periodic with numerous varices. Propodial pedal gland restricted to anterior half of sole margin. Pallial sensory structures (varying from well-developed pallial eyes to simple light-sensitive cup) at mantle edge in inhalant siphon. Ctenidial filament broad (base longer than height). Inner marginal tooth of radula with tapering distal tip. Midgut with anterior sorting area flap; style sac long, extending into pallial roof. Pallial oviduct with two sperm gutters and seminal receptacle in medial lamina. Euspermatozoa with acrosomal vesicle conical basally, flattened anteriorly; axoneme attached to nucleus and dense vesicles. Embryonic development extra-capsular but within parental body. Haploid chromosome number = 17.

<==Potamididae [Potamidinae]
    |--Tympanotonos margaritaceus (Brocchi 1814) GK02
    |--Telescopium Montfort 1810 [Telescopiidae] BR05
    |    |--*T. telescopium Linnaeus 1758 WG71
    |    `--T. fuscum F66
    |--Terebralia Swainson 1840 WG71
    |    |--T. bidentata (Defrance in Grateloup 1840) GK02
    |    |--T. semistriatus W08
    |    `--T. sulcata Bruguière 1792 WG71
    |--Cerithidea Swainson 1840 [Cerithideidae] BR05
    |    |--*C. decollata O27
    |    |--C. californica Haldeman 1840 O27 [incl. C. sacrata CG99]
    |    |--C. fuscata CG99
    |    |--C. kieneri (Hombr. & Jacq. 1853) [=Cerithium kieneri] H09
    |    `--C. largillierti (Philippi 1848) [=Cerithium largillierti] H09
    |--Potamides Brongniart 1810 BR05
    |    |--*P. (Potamides) lamarckii O27
    |    `--P. (Liocerithium Tryon 1887) O27
    |         `--P. (L.) sculptum (Sowerby 1855) [=Cerithium sculptum] O27
    `--Pirenella Gray 1847 BD86, O27
         |--P. cailliaudi (Potiez & Michaud 1838) [incl. P. conica] BD86
         `--P. cyclus (Dall 1919) [=Potamides (Pirenella) cyclus] O27

*Type species of generic name indicated


[BD86] Barash, A., & Z. Danin. 1986. Further additions to the knowledge of Indo-Pacific Mollusca in the Mediterranean Sea (Lessepsian migrants). Spixiana 9 (2): 117-141.

[BR05] Bouchet, P., J.-P. Rocroi, J. Frýda, B. Hausdorf, W. Ponder, Á. Valdés & A. Warén. 2005. Classification and nomenclator of gastropod families. Malacologia 47 (1-2): 1-397.

[CG99] Carlton, J. T., J. B. Geller, M. L. Reaka-Kudla & E. A. Norse. 1999. Historical extinctions in the sea. Annual Review of Ecology and Systematics 30: 315-338.

[F66] Fraser, L. 1866. Communication of a list of mollusks collected by R. Swinhoe, Esq., in Formosa. Proceedings of the Zoological Society of London 1866: 146.

[GK02] Gründel, J., & T. Kowalke. 2002. Palaeorissoinidae, a new family of marine and brackish water Rissooidea (Gastropoda, Littorinimorpha). Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 226 (1): 43-57.

[H09] Hedley, C. 1909. The Marine Fauna of Queensland: Address by the President of Section D. Australasian Association for the Advancement of Science: Brisbane.

[O27] Oldroyd, I. S. 1927. The Marine Shells of the West Coast of North America vol. II, pt. III. Stanford University Press: Stanford University (California).

Strong, E. E., D. J. Colgan, J. M. Healy, C. Lydeard, W. F. Ponder & M. Glaubrecht. in press. Phylogeny of the gastropod superfamily Cerithioidea using morphology and molecules. Zoological Journal of the Linnean Society.

[W08] Wilson, B. 2008. Background information on Faure Island, Shark Bay, Western Australia. Records of the Western Australian Museum Supplement 75: 1-9.

[WG71] Wilson, B. R., & K. Gillett. 1971. Australian Shells: illustrating and describing 600 species of marine gastropods found in Australian waters. A. H. & A. W. Reed: Sydney.

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