- Waagenina
- Waagenoceras
- Waehneroceras
- Wagnericeras
- Waldthausenites
- Wangoceras
- Wasatchites
- Watinoceras
- Wedekindella
- Wellerites
- Wellsites
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- Welterites
- Werneroceras
- Wewokites
- Wheatleyites
- Whitbyiceras
- Wichmanniceras
- Wiedeyoceras
- Winchelloceras
- Windhauseniceras
- Winslowoceras
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- Wintonia
- Witchellia
- Wocklumeria
- Wopfingites
- Wordieoceras
- Worthoceras
- Wrightoceras
- Wyomingites
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