Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Placodontia (placodont)

Reptilia - Placodontia

Synonyms
Synonymy list
YearName and author
1871Placodontia Cope
1890Placodontia Zittel p. 449
1898Placodontia Gadow p. 18
1903Placodontia Osborn p. 276
1904Placodontia Osborn p. 104
1910Placodonti Jaekel p. 335
1911Placodonti Jaekel p. 150
1928Placodontia Nopcsa p. 172
1928Placodondia Perrier p. 3118
1934Placodontia Swinton p. 63
1937Placodontia Roxo p. 43
1946Placodontia Kuhn p. 60
1954Placodontia Huene p. 37
1988Placodontia Carroll
1989Placodontia Pinna and Nosotti
1995Placodontia Rieppel p. 2
2000Placodontia Rieppel
2001Placodontia O'Keefe p. 21
2002Placodontia Sepkoski
2005Priscochelys hegnabrunnensis Karl p. 72 figs. 1, 2a
2006Priscochelys hegnabrunnensis Joyce and Karl
2013Placodontia Neenan et al. fig. 3
2018Placodontia Miguel Chaves et al.
2019Placodontia Wang et al.

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
suborderSauropterygia
orderPlacodontiaCope 1871
orderPlacodontiaCope 1871

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Or. †Placodontia Cope 1871 [placodont]
show all | hide all
G. †Chelyposuchus Romer 1966
Fm. †Cyamodontidae Nopcsa 1923
hide
G. †Cyamodus von Meyer 1863
+
†Cyamodus hildegardis Peyer 1931
†Cyamodus kuhnschnyderi Nosotti and Pinna 1993
†Cyamodus muensteri Agassiz 1834
+
Invalid names: Cyamodus laticeps Owen 1859 [synonym]
†Cyamodus orientalis Wang et al. 2019
†Cyamodus rostratus Münster 1839
†Cyamodus tarnowitzensis Gürich 1884
Subor. †Cyamodontoidea Nopcsa 1923
hide
Unr. †Cyamodontida Nopsca 1923
+
G. †Henodus Huene 1936
+
†Henodus chelyops Huene 1936
Invalid names: Psephodermatidae Nopcsa 1923 [empty]
Unr. †Placochelyida Romer 1956
+
G. †Macroplacus Schubert and Klempnauer 1975
+
†Macroplacus raeticus Schubert and Klempnauer 1975
G. †Placochelys Jaekel 1902
+
†Placochelys placodonta Jaekel 1902
+
Invalid names: Placodus placodonta Jaekel 1902 [synonym]
G. †Protenodontosaurus Pinna 1990
+
G. †Psephoderma von Meyer 1858
+
†Psephoderma alpinum Meyer 1858
+
Invalid names: Placochelys malanchinii Boni 1948 [synonym], Placochelys stoppanii Pinna 1980 [synonym], Placodus zitteli Amman 1878 [synonym]
†Psephoderma anglicum Meyer 1864
†Psephoderma sculptata Rieppel 2002
Invalid names: Placochelyanus Pinna 1976 [synonym]
Invalid names: Macroplacidae Rieppel 2000 [empty], Protenodontosauridae Rieppel 2000 [empty]
Fm. †Placochelyidae Jaekel 1910
+
G. †Glyphoderma Zhao et al. 2008
+
†Glyphoderma kangi Zhao et al. 2008
G. †Psephochelys Li and Rieppel 2002
+
†Psephochelys polyosteoderma Li and Rieppel 2002
G. †Psephosaurus Fraas 1896
+
†Psephosaurus suevicus Fraas 1896
G. †Priscochelys Karl 2005
G. †Psephosauriscus Rieppel 2002
+
†Psephosauriscus mosis Brotzen 1957
+
Invalid names: Psephosaurus mosis Brotzen 1956 [replaced]
†Psephosauriscus rhombifer Rieppel 2002
+
Invalid names: Psephosaurus rhombifer Haas 1959 [replaced]
+
Invalid names: Psephosaurus sinaiticus Haas 1959 [replaced]
Invalid names: Psephosaurus picardi Brotzen 1956 [nomen dubium]
Subor. †Henodontida Kuhn 1961
hide
Fm. †Henodontidae von Huene 1936
+
G. †Chelyoposuchus Kuhn 1939
+
G. †Parahenodus Miguel Chaves et al. 2018
+
†Parahenodus atancensis Miguel Chaves et al. 2018
G. †Negevodus Mazin 1986
Fm. †Paraplacodontidae Peyer and Kuhn-Schnyder 1955
hide
G. †Paraplacodus Peyer 1931
+
†Paraplacodus broilii Peyer 1931
G. †Pararcus Klein and Scheyer 2014
hide
†Pararcus diepenbroeki Klein and Scheyer 2014
Superfm. †Placodontoidea Nopcsa 1923
hide
Fm. †Placodontidae Cope 1871
+
G. †Placodus Agassiz 1833
+
†Placodus duplicatus Fraas 1896
†Placodus gigas Agassiz 1833
+
Invalid names: Anomosaurus strunzi Huene 1905 [synonym], Omphalosaurus peyeri Maisch and Lehmann 2002 [synonym], Placodus antiquior Huene 1936 [synonym], Placodus hypsiceps Meyer 1863 [synonym], Placodus quinmolaris Braun 1863 [synonym]
†Placodus inexpectatus Jiang et al. 2008
Invalid names: Anomosaurus Huene 1902 [synonym], Crurosaurus Huene 1902 [synonym], Crurosaurus problematicus Huene 1902 [nomen dubium], Placodus aethiops Meyer 1863 [nomen nudum], Placodus andriani Agassiz 1839 [nomen dubium], Placodus angustus Meyer 1863 [nomen nudum], Placodus bathygnathus Owen 1859 [nomen dubium], Placodus bombidens Owen 1858 [nomen dubium], Placodus gracilis Jurcsak 1976 [nomen dubium], Placodus impressus Agassiz 1833 [nomen dubium], Placodus pachygnathus Owen 1859 [nomen dubium], Placodus rugosus Meyer 1863 [nomen nudum]
Invalid names: Chelyoposuchinae Kuhn 1946 [empty]
Invalid names: Hemilopadidae Jaekel 1910 [empty], Placodontida Peyer and Kun-Schnyder 1955 [empty], Priscochelys hegnabrunnensis Karl 2005 [nomen dubium]
Diagnosis
ReferenceDiagnosis
E. Perrier 1928Deux à trois dents coniques aux prémaxillaires; trois à cinq molaires larges et plates aux maxillaires ; trois paires de plaques beaucoup plus larges, couvrant presque tout le palais.