| Ptychatractus | |
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| Ptychatractus occidentalis (a species within the genus) | |
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| Genus: | Ptychatractus Stimpson, 1865 |
Ptychatractus is a genus of sea snails, marine gastropod mollusks in the family Ptychatractidae. [1]
Species within the genus Ptychatractus include:
Turritella is a genus of medium-sized sea snails with an operculum, marine gastropod mollusks in the family Turritellidae.
Tulip snail or tulip shell is the common name for eight species of large, predatory, subtropical and tropical sea snails from the Western Atlantic. These species are in the genus Fasciolaria. They are marine gastropod mollusks in the family Fasciolariidae, the spindle shells, tulip shells and their allies.
Pupa is a genus of small sea snails, marine gastropod molluscs in the family Acteonidae.
Curtitoma violacea is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Clathrodrillia is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
Kermia is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Curtitoma is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Oenopota is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Propebela is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Pyrgocythara is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Bela is a genus of sea snails; marine gastropod mollusks in the family Mangeliidae.
Margarites is a genus of sea snails, marine gastropod mollusks in the family Margaritidae.
Thala is a genus of sea snails, marine gastropod mollusks in the family Costellariidae.
Ptychatractus ligatus, common name the ligate false spindle, is a species of sea snail, a marine gastropod mollusk in the family Ptychatractidae.
Ptychatractus occidentalis is a species of sea snail, a marine gastropod mollusk in the family Ptychatractidae.
Ptychatractus youngi is a species of sea snail, a marine gastropod mollusk in the family Ptychatractidae.
Gyrineum is a genus of predatory sea snails, marine gastropod mollusks in the family Cymatiidae.
Setia is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Zebina is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Zebinidae.
Ennucula is a genus of marine bivalves that inhabit all the world's oceans. They are placed in the family Nuculidae. Ennucula fossils have been in strata deposited 15.6-15.4 million years ago.