P

Pachycephalosaurus Brown and Schlaikjer, 1943
    type species: P. wyomingensis (Gilmore, 1931 (originally Troodon))
    other species: P. grangeri Brown and Schlaikjer, 1943=P. wyomingensis
                         P. reinheimeri Brown and Schlaikjer, 1943=P. wyomingensis
Pachyrhinosaurus Sternberg, 1950
    type species: P. canadensis Sternberg, 1950
Pachysauriscus (N.D.) Kuhn, 1959="Pachysaurus"
    type species: P. ajax (N.D.) (Huene, 1907-08 (originally Pachysaurus))="P." ajax
   other species: P. giganteus (N.D.) (Huene, 1932 (originally Pachysaurus))="P." giganteus
                        P. magnus (N.D.) (Huene, 1907-08 (originally Pachysaurus))="P." magnus
                        P. reinigeri (N.D.) (Huene, 1907-08 (originally Plateosaurus))="Plateosaurus" reinigeri
                        P. wetzelianus (N.D.) (Huene, 1932 (originally Pachysaurus))="P." wetzelianus
Pachysaurops Huene, 1959="Pachysaurus"
Pachysaurus Huene, 1907-08/Fitzinger, 1843
   "type species": "P." ajax (N.D.) Huene, 1907-08>Sauropodomorpha incertae sedis
   other species: "P." giganteus (N.D.) Huene, 1932>Sauropodomorpha incertae sedis
                         "P." magnus (N.D.) Huene, 1907-08>Sauropodomorpha incertae sedis
                        "P." wetzelianus (N.D.) Huene, 1932>Sauropodomorpha incertae sedis
Pachyspondylus (N.D.) Owen, 1854
    type species: P. orpenii (N.D.) Owen, 1854
Pakisaurus Malkani, 2006
    type species P. balochistani Malkani, 2006 
Palaeopteryx (N.D.) Jensen, 1981
    type species: P. thomsoni (N.D.) Jensen, 1981
Palaeosauriscus (N.D.) Kuhn, 1959=Paleosaurus
    type species: P. cylindrodon (N.D.) (Riley and Stutchbury, 1840 (originally Paleosaurus))=Paleosaurus cylindrodon
    other species: P. diagnosticus (Huene, 1932 (originally Palaeosaurus))=Plateosaurus gracilis
                         P. fraserianus (N.D.) (Cope, 1878 (originally Palaeosaurus))="P." fraserianus
                         P. platyodon (N.D.) (Riley and Stutchbury, 1840 (originally Paleosaurus))="Paleosaurus" platyodon
                         P. stricklandi (N.D.) (Davies, 1881 (origninally Palaeosaurus))="P." stricklandi
"Palaeosaurus" (N.N.) Riley and Stutchbury, 1836/Geoffrey Saint-Hillaire, 1831=Paleosaurus
   "type species": "P." cylindrodon (N.D.) Riley and Stutchbury, 1836=Paleosaurus cylindrodon
   other species: "P." diagnosticus Huene, 1932=Efraasia minor
                         "P." fraserianus (N.D.) Cope, 1878>Sauropodomorpha incertae sedis
                         "P." platyodon (N.D.) Riley and Stutchbury, 1836="Paleosaurus" platyodon
                         "P." sternbergi (N.D.) Fitzinger, 1840>nondinosaurian (Sphenosaurus)
                         "P." stricklandi (N.D.) Davies, 1881>nondinosaurian (?phytosaur)
Palaeoscincus (N.D.) Leidy, 1856
    type species: P. costatus (N.D.) Leidy, 1856
    other species: P. africanus Broom, 1912=Paranthodon africanus
                         P. asper (N.D.) Lambe, 1902=Euoplocephalus tutus
                         P. rugosidens Gilmore, 1930=Edmontonia rugosidens
                        "P." latus (N.D.) Marsh, 1892>?Pachycephalosauria incertae sedis
Paleosaurus (N.D.) Riley and Stutchbury, 1840=nondinosaurian
    type species: P. cylindrodon (N.D.) Riley and Stutchbury, 1840>nondinosaurian (?phytosaur)
    other species: "P." platyodon (N.D.) Riley and Stutchbury, 1840>nondinosaurian (?phytosaur)
                         "P." sternbergi (N.D.) (Fitzinger, 1840 (originally Palaeosaurus))="Palaeosaurus" sternbergi
                         "P." stricklandi (N.D.) (Davis, 1881 (originally Palaeosaurus))="Palaeosaurus" stricklandi
                         "P." subcylindrodon (N.D.) (Huene, 1907-08 (originally Thecodontosaurus))="Thecodontosaurus" subcylindrodon
Paluxysaurus Rose, 2007
    type species: P. jonesi Rose, 2007
Panoplosaurus Lambe, 1919
    type species: P. mirus Lambe, 1919
    other species: P. longiceps (Sternberg, 1928 (originally Edmontonia))=Edmontonia longiceps
                         P. rugosidens (GIlmore, 1930 (originally Palaeoscincus))=Edmontonia rugosidens
Pantydraco Galton, Yates, and Kermack, 2007
    type species: P. caducus (Yates, 2003 (originally Thecodontosaurus))
"Paraiguanodon" (N.N.) Brown vide Olshevsky, 1991=Bactrosaurus
   "type species": "P. incolapaludalis" (N.N.) Brown vide Olshevsky, 1991=Bactrosaurus johnsoni
Paralititan J. B. Smith, Lamanna, Lacovara, Dodson, J. R. Smith, Poole, Giegengack, and Attia, 2001
    type species: P. stromeri J. B. Smith et al., 2001
Paranthodon Nopcsa, 1929
    type species: P. africanus (Broom, 1912 (originally Palaeoscincus))
    other species: P. owenii Nopcsa, 1929=P. africanus
Pararhabdodon Casanovas-Cladellas, Santafé-Llopis, and Isidoro-Llorens, 1993
    type species: P. isonensis Casanovas-Cladellas et al., 1993
Parasaurolophus Parks, 1922
    type species: P. walkeri Parks, 1922
    other species: P. tubicen Wiman, 1931
                         P. cyrtocristatus Ostrom, 1961=P. tubicen                         
Parksosaurus Sternberg, 1937
    type species: P. warrenae (Parks, 1926 (originally Thescelosaurus))
Paronychodon (N.D.) Cope, 1876
    type species: P. lacustris (N.D.) Cope, 1876
Parrosaurus (N.D.) Gilmore, 1945="Neosaurus"
   type species: P. missouriensis (N.D.) (Gilmore and Stewart, 1945 (originally Neosaurus))="Neosaurus" missouriensis
Parvicursor Karhu and Rautian, 1996
    type species: P. remotus Karhu and Rautian, 1996
Patagonykus Novas, 1997
    type species: P. puertai Novas, 1997
Patagosaurus Bonaparte, 1979
    type species: P. fariasi Bonaparte, 1979
Pawpawsaurus Lee, 1996
    type species: P. campbelli Lee, 1996
Pectinodon Carpenter, 1982=Troodon
   type species: P. bakkeri Carpenter, 1982=Troodon ?formosus
   other species: "P." asiamericanus (N.D.) Nessov, 1985>Troodontidae incertae sedis
Pedopenna Xu and Zhang, 2005
    type species: P. daohugouensis Xu and Zhang, 2005
Peishansaurus (N.D.) Bohlin, 1953
    type species: P. philemys (N.D.) Bohlin, 1953
Pelecanimimus Pérez-Moreno, Sanz, Buscalioni, Moratalla, Ortegá, and Rasskin-Gutman, 1994
    type species: P. polyodon Peréz-Moreno et al., 1994
Pellegrinisaurus Salgado, 1996
    type species: P. powelli Salgado, 1996
Pelorosaurus (?N.D.) Mantell, 1850
    type species: P. conybeari (?N.D.) Mantell, 1850 
    other species: P. armatus (?N.D.) (Gervais, 1852 (originally Oplosaurus))=Oplosaurus armatus
                         P. humerocristatus (N.D.) (Hulke, 1874 (originally Cetiosaurus))="C." humerocristatus
                         P. leedsi (N.D.) (Hulke, 1887 (originally Ornithopsis))="O." leedsi
                         P. mackesoni (N.D.) (Owen, 1884 (originally Dinodocus))=Dinodocus mackesoni
                         P. manseli (N.D.) (Hulke, 1874 vide Lydekker, 1888 (originally Ischyrosaurus))="Ischyrosaurus" manseli 
                         "P." becklessi Mantell, 1852>Titanosauria incertae sedis                                             
"Peltosaurus" (N.N.) Brown vide Chure and McIntosh, 1989/Cope, 1873=Sauropelta
Penelopognathus Godefroit, Li, and Shang, 2005
    type species: P. weishampeli Godefroit et al., 2005
Pentaceratops Osborn, 1923
    type species: P. sternbergi Osborn, 1923
    other species: P. fenestratus Wiman, 1930=P. sternbergi
Phaedrolosaurus (N.D.) Dong, 1973
    type species: P. ilikensis (N.D.) Dong, 1973
Phuwiangosaurus Martin, Buffetaut, and Suteethorn, 1994
    type species: P. sirindhornae Martin et al., 1994
Phyllodon (?N.D.) Thulborn, 1973
    type species: P. henkeli (?N.D.) Thulborn, 1973
Piatnitzkysaurus Bonaparte, 1979
    type species: P. floresi Bonaparte, 1979
Picrodon (N.D.) Seeley, 1898=?"Zanclodon"
    type species: P. herveyi (N.D.) Seeley, 1898=?"Zanclodon" cambrensis
Pinacosaurus Gilmore, 1933
    type species: P. grangeri Gilmore, 1933
    other species: P. mephistocephalus Godefroit, Pereda-Suberbiola, Li, and Dong, 1999
                         P. disparoserratus (Maleev, 1952 (originally Syrmosaurus))=Talarurus plicatospineus
                         P. ninghsiensis (N.D.) Yang, 1935=P. sp.
Pisanosaurus Casamiquela, 1967
    type species: P. merti Casamiquela, 1967
Piveteausaurus Taquet and Welles, 1977
    type species: P. divesensis (Walker, 1964 (originally Eustreptospondylus))
Planicoxa DiCroce and Carpenter, 2001
    type species: P. venenica DiCroce and Carpenter, 2001
    other species: P. depressa (Gilmore, 1909 (originally Camptosaurus))
Plateosauravus Huene, 1932
   type species: P. cullingworthi (Haughton, 1924 (originally Plateosaurus))
   other species: P. stormbergensis (N.D.) (Broom, 1915 (originally Plateosaurus))="Plateosaurus" stormbergensis
Plateosaurus Meyer, 1837
    type species: P. engelhardti Meyer, 1837
    other species: P. gracilis (Huene, 1907-08 (originally Sellosaurus))
                         P. longiceps Jaekel, 1914
                         P. carinatus (Owen, 1854 (originally Massospondylus))=Massospondylus carinatus
                         P. cullingworthi Haughton, 1924=Plateosauravus cullingworthi
                         P. elisae (N.D.) Sauvage, 1907=P. ?engelhardti
                         P. fraasianus Huene, 1932=P. longiceps
                         P. ingens (N.D.) (Rütimeyer, 1856 (originally Gresslyosaurus))=Gresslyosaurus ingens
                         P. integer Fraas vide Huene, 1915=P. longiceps                                                  
                         P. poligniensis (?N.D.) (Pidancet and Chopard, 1862 (originally Dimodosaurus))=Dimodosaurus poligniensis
                         P. quenstedti (N.D.) (Koken, 1900 (originally Zanclodon))="Z." quenstedti
                         P. robustus (N.D.) (Huene, 1907-08 (originally Gresslyosaurus))="Gresslyosaurus" robustus                         
                         P. torgeri (Jaekel, 1911 (originally Gresslyosaurus))="G." torgeri
                         P. trossingensis Frass, 1914=P. longiceps
                         "P." erlenbergiensis (?N.D.) Huene, 1905>Sauropodomorpha incertae sedis
                         "P." ornatus (N.D.) Huene, 1907-08>Sauropodomorpha incertae sedis
                         "P." plieningeri (N.D.) Huene, 1907-08>Sauropodomorpha incertae sedis
                         "P." reinigeri (N.D.) Huene, 1905>Sauropodomorpha incertae sedis
                         "P." stormbergensis (N.D.) Broom, 1915>Sauropodomorpha incertae sedis
Platyceratops Aliafanov, 2003
    type species: P. tatarinovi Aliafanov, 2003
Pleurocoelus Marsh, 1888=Astrodon
    type species: P. nanus Marsh, 1888=Astrodon johnsoni
    other species: P. altus Marsh, 1888= A. johnsoni
                         P. montanus Marsh, 1896=Camarasaurus grandis
                         "P." valdensis Lydekker, 1889>Titanosauria incertae sedis
Pleuropeltus (N.D.) Seeley, 1881=Danubiosaurus
   type species: P. suessi (N.D.) Seeley, 1881=Danubiosaurus anceps
Podokesaurus (?N.D.) Talbot, 1911
    type species: P. holyokensis (?N.D.) Talbot, 1911
Poekilopleuron Eudes-Deslongchamps, 1838
    type species: P. bucklandii Eudes-Deslongchamps, 1838
    other species: P. pusillus Owen, 1876=Aristosuchus pusillus
                         P. valesdunensis Allain, 2002=Dubreuillosaurus valesdunensis
                         "P." schmidti (N.D.) Kiprijanov, 1883>Theropoda incertae sedis
                         "P." valens (N.D.) Leidy, 1870>Carnosauria incertae sedis
Polacanthoides (N.D.) Nopcsa, 1928=Hylaeosaurus, Polacanthus
   type species: P. ponderosus (N.D.) Nopcsa, 1928=Hylaeosaurus armatus, Polacanthus foxii
Polacanthus Owen, 1865
    type species: P. foxii Hulke, 1881
    other species: P. rudgwickensis Blows, 1996
                         P. becklesi Hennig, 1924=P. foxii
                         P. marshi (Lucas, 1901 (originally Stegosaurus))=Hoplitosaurus marshi
Polyodontosaurus Gilmore, 1932=Troodon
   type species: P. grandis Gilmore, 1932=Troodon formosus
Polyonax (N.D.) Cope, 1874
    type species: P. mortuarius (N.D.) Cope, 1874
Ponerosteus (N.D.) Olshevsky, 2000="Iguanodon"
    type species: P. exogyrarum (N.D.) (Fritsch, 1878 (originally Iguanodon))="I." exogyrarum
Pradhania Kutty, Chatterjee, Galton, and Upchurch, 2007
    type species: P. gracilis Kutty et al., 2007
Prenocephale Maryanska and Osmólska, 1974
    type species: P. prenes Maryanska and Osmólska, 1974
    other species: P. brevis (Lambe, 1918 (originally Stegoceras))="Stegoceras" breve
                          P. edmontonensis (N.D.) (Brown and Schlaikjer, 1943 (originally Troodon))="T." edmontonensis
Prenoceratops Chinnery, 2004
    type species: P. pieganensis Chinnery, 2004
Priconodon (?N.D.) Marsh, 1888
    type species: P. crassus (?N.D.) Marsh, 1888
Priodontognathus (N.D.) Seeley, 1875="Iguanodon"
    type species: P. phillipsii (N.D.) (Seeley, 1869 (originally Iguanodon))="I." phillipsii
Probactrosaurus Rozhdestvensky, 1966
    type species: P. gobiensis Rozhdestvensky, 1966
    other species: P. alashanicus Rozhdestvensky, 1966=P. gobiensis
                         "P." mazhongshanensis Lu, 1997>Iguanodontoidea incertae sedis
Proceratops (N.D.) Lull, 1906=Ceratops
   type species: P. montanus (N.D.) (Marsh, 1888 (originally Ceratops))=Ceratops montanus
Proceratosaurus Huene, 1926
    type species: P. bradleyi (Woodward, 1910 (originally Megalosaurus))
    other species: P. divesensis (Walker, 1964 (originally Eustreptospondylus))=Piveteausaurus divesensis
Procerosaurus Fritsch, 1905/Huene, 1902="Iguanodon"
    "type species": "P." exogirarum (N.D.) (Fritsch, 1878 (originally Iguanodon))="I." exogyrarum
Procheneosaurus Matthew, 1920=Lambeosaurus
   type species: P. praeceps (Parks, 1931 (originally Tetragonosaurus))=Lambeosaurus lambei
   other species: P. cranibrevis (Sternberg, 1935 (originally Tetragonosaurus))=Lambeosaurus sp.
                        P. erectofrons (Parks, 1931 (originally Tetragonosaurus))=Corythosaurus casuarius
                        "P." convincens (N.D.) Rozhdestvensky, 1968>Lambeosaurinae incertae sedis
Procompsognathus Fraas, 1913
    type species: P. triassicus Fraas, 1913
    other species: P. trielbae (N.D.) (Jaekel, 1913-14 (originally Pterospondylus))=Pterospondylus trielbae
Prodeinodon (N.D.) Osborn, 1924
    type species: P. mongoliensis (N.D.) Osborn, 1924
    other species: P. dunkeri (N.D.) (Dames, 1884 (originally Megalosaurus))="Megalosaurus" dunkeri
                          "P." kwangshiensis (N.D.) Hou, Yeh, and Zhao, 1975>Theropoda incertae sedis
"Proiguanodon" (N.N.)
"Proornis" (N.N.) Lim vide Pak and Kim, 1996
    "type species": "P. coreae" (N.N.) Lim vide Pak and Kim, 1996
Prosaurolophus Brown, 1916
    type species: P. maximus Brown, 1916
    other species: P. blackfeetensis Horner, 1992=P. maximus
                         P. breviceps (N.D.) (Marsh, 1889 (originally Hadrosaurus))="H." breviceps
Protarchaeopteryx Ji Q. and Ji S., 1997
    type species: P. robusta Ji Q. and Ji S., 1997
Protiguanodon Osborn, 1923=Psittacosaurus
   type species: P. mongoliensis Osborn, 1923=Psittacosaurus mongoliensis
Protoavis Chatterjee, 1991
    type species: P. texensis Chatterjee, 1991
Protoceratops Granger and Gregory, 1923
    type species: P. andrewsi Granger and Gregory, 1923
    other species: P. hellenikorhinus Lambert, Godefroit, Shang, and Dong, 2001
                         P. kozlowskii Maryanska and Osmólska, 1975=Bagaceratops rozhdestvenskyi
Protognathosaurus Olshevsky, 1991
    type species: P. oxyodon (Zhang, 1988 (originally Protognathus))
Protognathus Zhang, 1988/Basilewsky, 1950=Protognathosaurus
   "type species": "P." oxyodon Zhang, 1988=Protognathosaurus oxyodon
Protohadros Head, 1998
    type species: P. byrdi Head, 1998
Protorosaurus Lambe, 1914/Meyer, 1830=Chasmosaurus
   "type species": "P." belli (Lambe, 1902 (originally Monoclonius))=Chasmosaurus belli
"Protrachodon" (N.N.) Nopcsa, 1923
Pseudolagosuchus Arcucci, 1987
    type species: P. major Arcucci, 1987
Psittacosaurus Osborn, 1923
    type species: P. mongoliensis Osborn, 1923
    other species: P. lujiatunensis Zhou, C.-F., Gao, K.-Q., Fox, R., and Chen, S.-H., 2006
                         P. major Sereno, Zhao, X.-J, Brown, and Tan, L., 2007 
                         P. mazongshanensis Xu, 1997
                         P. meileyingensis Sereno, Zhao, Cheng, and Rao, 1988
                         P. neimongoliensis Russell and Zhao, 1996
                         P. ordosensis Russell and Zhao, 1996
                         P. sattayaraki (?N.D.) Buffetaut and Suteethorn, 1992
                         P. sinensis Yang, 1958
                         P. xinjiangensis Sereno and Zhao, 1988
                         "P. chaoyoungi" (N.N.) Wang, 1983
                         "P. liangi" (N.N.) Liu, 1999
                         P. guyangensis Cheng, 1983=P. mongoliensis
                         P. osborni Yang, 1931=P. mongoliensis
                         P. protiguanodonensis Yang, 1958=P. mongoliensis
                         P. tingi Yang, 1931=P. mongoliensis
                         P. youngi Zhao, 1962=P. sinensis
                         "P." sibiricus Voronkevich and Averianov vide Leschinskiy, Voronkevich, Maschenko, and Averianov, 2000>Ceratopia incertae sedis
Pteropelyx (N.D.) Cope, 1889=Corythosaurus
    type species: P. grallipes (N.D.) Cope, 1889=Corythosaurus casuarius
    other species: P. altidens (N.D.) (Lambe, 1902 (originally Trachodon))="Trachodon" altidens
                         P. marginatus (N.D.) (Lambe, 1902 (originally Trachodon))="Trachodon" marginatus
                         P. selwyni (N.D.) (Lambe, 1902 (originally Trachodon))="Trachodon" selwyni
Pterospondylus (N.D.) Jaekel, 1913-14
    type species: P. trielbae (N.D.) Jaekel, 1913-14
Puertasaurus Novas, Salgado, Calvo, and Agnolin, 2005
    type species: P. reuili Novas et al., 2005
Pukyongosaurus (N.D.) Dong, Paik, and Kim, 2001
    type species: P. millenniumi (N.D.) Dong et al., 2001
Pycnomenosaurus Kellner and Campos, 2002
    type species: P. nevesi Kellner and Campos, 2002
Pyroraptor Allain and Taquet, 2000
    type species: P. olympius Allain and Taquet, 2000