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Ptychatractus
Taxonomy
Ptychatractus was named by Stimpson (1865) [Sepkoski's age data: T Than R Sepkoski's reference number: 614]. It is extant.
It was assigned to Vasidae by Abbass (1967); and to Neogastropoda by Sepkoski (2002).
It was assigned to Vasidae by Abbass (1967); and to Neogastropoda by Sepkoski (2002).
Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. Ptychatractus Stimpson 1865
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Subg. Ptychatractus (Ptychatractus) Stimpson 1865
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†Ptychatractus (Ptychatractus) fusiformis Abbass 1967
†Ptychatractus angustus Deshayes 1835
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Invalid names: Ptychatractus terebelloides d'Orbigny 1850 [synonym]
†Ptychatractus interruptus Pilkington 1804
Diagnosis
No diagnoses are available