This genus was traditionally considered to be part of the family Strombidae, the true conchs and their allies. However, recent morphological as well as molecular studies indicate that these should be recognised as a separate family, the Rostellariidae, and this is the way they are treated in the database WoRMS. The recent species belong to three distinct genera, but several more genera are known from the fossil record.

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Rimellopsis powisii (Powis's tibia)
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Rimellopsis powisii (Powis's tibia)

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Rostellariella delicatula (Delicate tibia)
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Rostellariella delicatula (Delicate tibia)

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Rostellariella martinii (Martini's tibia)
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Rostellariella martinii (Martini's tibia)

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Tibia curta (The Indian tibia)
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Tibia curta (The Indian tibia)

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Tibia fusus (Shinbone tibia)
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Tibia fusus (Shinbone tibia)

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Tibia insulaechorab (Arabian tibia)
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Tibia insulaechorab (Arabian tibia)

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Varicospira cancellata (Cancellate beak-shell)
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Varicospira cancellata (Cancellate beak-shell)

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