Systematic position and taxonomy of the genus Hirtudiscus from Colombia (Gastropoda: Scolodontidae)

  • Hausdorf B
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Hirtudiscus Hylton Scott, 1973 can be classified in the
Scolodontidae because of the reduced jaw, the dagger-like lateral teeth with
basal plates, which point away from the centre, the aulacopod foot and the
elongate kidney. The minute central teeth, ovoviviparity and the course of the
right ommatophoral retractor (which passes between penis and vagina) indicate
that Hirtudiscus belongs to the subfamily Scolodontinae. The peculiar
suture of the shell and the incision at the parietal angle of the aperture
might be synapomorphies of Hirtudiscus and Drepanostomella.

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  • Bernhard Hausdorf

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