 Lateral view of corallum
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 Sphenotrochus gilchristi, Costal granulations near calice
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 Lateral view of unequal-sized costae and intercostae
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 Calicular view of corallum
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 view of labyrinthiform-lamellar columella
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 view of convoluted costae in upper half of corallum
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 Sphenotrochus denosus, lateral view
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 Lateral view of basal costal region
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 Lateral view of corallum
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 Calicular view of corallum
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 Lateral view of corallum with fishtail morphology
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