Palaemon, Genus
Palaemonetes, Genus
Palaemonidae, Familia
Palaemonoidea, Superfamilia
Palinura, Infraorder
Palinuridae, Familia
Palinuroidea, Superfamilia
Palinurus, Genus
Pandalidae, Familia
Pandalina, Genus
Pandaloidea, Superfamilia
Pandalus, Genus
Pandeiidae, Familia
Paraconchoecia, Genus
Paragnathia, Genus
Paramysis, Genus
Parapasiphae, Genus
Paratiara, Genus
Parerythrops, Genus
Pasiphaea, Genus
Pasiphaeidae, Familia
Pasiphaeoidea, Superfamilia
Paxillosida, Ordo
Pectinaria, Genus
Pectinariidae, Familia
Pegea, Genus
Pelagia, Genus
Pelagiidae, Familia
Pelecypoda, Classis
– synonym of Bivalvia, Classis
Pelecypoda | Goldfuss, 1820, Classis
– synonym of Bivalvia, Classis
Penaeoidea, Superfamilia
Penicillaria, Subordo
Penilia, Genus
Peracarida, Superorder
Perinereis, Genus
Periphylla, Genus
Periphyllidae, Familia
Petalosarsia, Genus
Phialella, Genus
Phialellidae, Familia
Phialopsis, Genus
Philocheras, Genus
Philomedes, Genus
Philomedidae, Familia
Philomedinae, Subfamilia
Phoronida, Phylum
Phoronidae, Familia
Phronima, Genus
Phronimidae, Familia
Phronimoidea, Superfamilia
Phtisicidae, Familia
Phtisicoidea, Superfamilia
Phyllodocida, Ordo
Phyllodocidacea, Superfamilia
Physalia, Genus
Physaliidae, Familia
Physocephalata, Infraorder
Physonectae, Ordo
Physophora, Genus
Physophoridae, Familia
Physosomata, Infraorder
Pisces, Subphylum
Plagiostomidae, Familia
Plagiostomum, Genus
Planocera, Genus
Planoceridae, Familia
Planoceroidea, Superfamilia
Plathelminthes, Phylum
– synonym of Platyhelminthes, Phylum
Platycopida, Ordo
Platyhelminthes, Phylum
Platynereis, Genus
Platysceloidea, Superfamilia
Platysquilla, Genus
Pleocyemata, Subordo
Pleurobrachia, Genus
Pleurobrachiidae, Familia
Pneumodermatidae, Familia
Pneumodermopsis, Genus
Podocopida, Ordo
Podocoryne, Genus
Podon, Genus
Podonidae, Familia
Polybius, Genus
Polychaeta, Classis
Polycladida, Ordo
Polydora, Genus
Polyplacophora, Classis
Pontophilus, Genus
Porpitidae, Familia
Portunidae, Familia
Portunoidea, Superfamilia
Praunus, Genus
Prayidae, Familia
Prayinae, Subfamilia
Proboscidactyla, Genus
Proboscidactylidae, Familia
Proboscoida, Ordo
Prolecithophora, Ordo
Prosobranchia, Subclassis
Pseudocuma, Genus
Pseudocumidae, Familia
Pseudomma, Genus
Ptenoglossa, Subordo
Pterosagitta, Genus
Pterosagittidae, Familia
Ptychogastria, Genus
Ptychogastriidae, Familia
Ptychogena, Genus
Pycnogonida, Classis
Pyrosoma, Genus
Pyrosomatidae, Familia
Pyrosomida, Ordo