This includes the Family Harpidae like Morum and Harpa.
Harpidae

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Cancellomorum chipolanum 17.93mm. "Ultra-Rare" Fossil #700610
Cancellomorum chipolanum 17.93mm. Maury, 1925 “Ultra-Rare Unicorn Shell” Collected in sand and muddy substrate with pickaxe at Ten Mile...
$85.00 Sale: $72.25

Max: 1

Morum purpureum 18.38mm. "Superb Fossil" #700813
Morum purpureum 18.38mm. Roding, 1798-Superb Fossil Collected in the Belle Glade Member of the Bermont Formation in the 2000’s Palm Beach...
$35.00 Sale: $29.75
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Max: 1