Ba
- †Bacchites
- †Bactrites
- †Baculina
- †Baculites
- †Badiotites
- †Bagnolites[2]
- †Balatonites
- †Balearites
- †Balkanites
- †Balticeras
- †Balvia
- †Bamyaniceras
- †Baronnites
- †Barrandeites
- †Barremites
- †Barroisiceras
- †Baschkirites
- †Bashkortoceras
- †Baskaniiceras
- †Basleoceras
- †Bauchioceras
- †Bayleites
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