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Gastropoda - Iravadiidae
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|W. F. Ponder 1984||Shell. Small, elongate-conic, smooth or spirally sculptured, with weaklyconvex whorls. Aperture elongately-ovate, angled and weakly channelled posteriorly; distinctly and rather deeply-channelled anteriorly; outer lip sinuate, with middle and uppermost (adapical) section advanced (see Fig. 13H). Inner lip thin, narrow; columella vertical, narrow. No external varix. Protoconch relatively small, of about two whorls, the first 12 whorls flat, the last half whorl rapidly descending. Figs. 13E-H.|