Perryella [SEP] parent taxon
distantly related. In 2006, a phylogenetic analysis involving "Perryella" placed it within Dvinosauria as an intermediate form between trimerorhachids and other dvinosaurs.
- †" Permopsylla"
- †" Permopsylla americana" – tentative report
- †" Perrinites"
- †" Perrinites hilli"
- †" Perryella" – type locality for genus
- †" Perryella olsoni" – type locality for species
- †" Petalodus"
- †" Petigurus"
- †" Petigurus cullisoni"
- †" Petraia" – tentative report
- †" Petraster"
- †" Petrocrania"
- †" Petrocrania inflata"
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