fossiles
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Paracyclotosaurus | Taxon | 13 | 0.0 |
| Paralogania Menneri | Taxon | 2 | 0.0 |
| Parameteoraspis | Taxon | 2 | 0.0 |
| Parapytanga | Taxon | 5 | 0.1 |
| Paresseux Terrestre | Taxon | 22 | 21.3 |
| Parmastega | Taxon | 10 | 0.3 |
| Parnaibaia | Taxon | 4 | 0.0 |
| Parotosuchus | Taxon | 10 | 0.0 |
| Patranomodon | Taxon | 10 | 0.0 |
| Patrognathus | Taxon | 2 | 0.1 |
| Pederpes | Taxon | 14 | 3.8 |
| Pelodosotis | Taxon | 7 | 0.0 |
| Pelorocephalus | Taxon | 10 | 0.0 |
| Peltobatrachus | Taxon | 13 | 0.4 |
| Pelycosauria | Taxon | 42 | 6.6 |
| Pentlandopterus | Taxon | 2 | 0.0 |
| Pentlandopterus Minor | Taxon | 2 | 0.0 |
| Periodon | Taxon | 2 | 0.0 |
| Periodontidae | Taxon | 1 | 0.0 |
| Perophora | Taxon | 7 | 0.0 |
| Perophora Namei | Taxon | 7 | 0.0 |
| Perophoridae | Taxon | 11 | 0.2 |
| Perplexisaurus | Taxon | 6 | 0.0 |
| Petalonamae | Taxon | 11 | 0.8 |
| Petromyzon | Taxon | 8 | 0.4 |
| Petromyzontiformes | Taxon | 53 | 144.9 |
| Petrophyllia Arkensasensis | Taxon | 1 | 0.0 |
| Phalarodon | Taxon | 9 | 0.0 |
| Phallusia Fumigata | Taxon | 8 | 0.3 |
| Phlebobranchia | Taxon | 20 | 0.4 |
| Phlegethontia | Taxon | 11 | 0.2 |
| Phorcys | Taxon | 4 | 0.0 |
| Phragmodontidae | Taxon | 1 | 0.0 |
| Phreatophasma | Taxon | 7 | 0.4 |
| Phyllozoon | Taxon | 4 | 0.1 |
| Pikaia | Taxon | 35 | 9.5 |
| Pistillachitina | Taxon | 2 | 0.0 |
| Pistillachitina Elegans | Taxon | 1 | 0.0 |
| Pituriaspida | Taxon | 16 | 0.6 |
| Pituriaspis | Taxon | 5 | 0.1 |
| Piveteauia | Taxon | 5 | 0.0 |
| Placerias | Taxon | 25 | 3.1 |
| Placodermes | Taxon | 53 | 12.2 |
| Plagiosauridae | Taxon | 13 | 0.0 |
| Platyceramus | Taxon | 5 | 0.3 |
| Platyhelia | Taxon | 1 | 0.0 |
| Platyhystrix | Taxon | 17 | 0.3 |
| Platyoposaurus | Taxon | 11 | 0.2 |
| Pleurogona | Taxon | 8 | 0.0 |
| Plexus | Taxon | 1 | 0.2 |