Dodatak:Popis plaštenjaka, P
- Paraculeolus
- Paradoliopsidae
- Paradoliopsis
- Paramolgula
- Parascidia
- Pareugyrioides
- Pegea
- Pelagopleura
- Pelonaia
- Perophora
- Perophoridae
- Phallusia
- Pharyngodictyon
- Placentela
- Pleurogona
- Plurella
- Plurellidae
- Podostyela
- Polyandrocarpa
- Polycarpa
- Polycitor
- Polycitoridae
- Polyclinella
- Polyclinidae
- Polyclinum
- Polydistoma
- Polyoctacnemus
- Polysyncraton
- Polyzoa
- Proagnesia
- Protoholozoa
- Protomolgula
- Protopolyclinidae
- Protopolyclinum
- Protostyela
- Psammascidia
- Pseudodiazona
- Pseudodistoma
- Pseudodistomidae
- Pterygascidia
- Pycnoclavella
- Pycnoclavellidae
- Pyrosoma
- Pyrosomatida
- Pyrosomatidae
- Pyrosomella
- Pyrostremma
- Pyura
- Pyurella
- Pyuridae