†Placodontia (original) (raw)

After Rieppel & †Zanon, 1997, Rieppel, 2000, and Naish, 2000-2004

Family -level taxonomy of all sauropterygians.

**<==**o †Placodontia Cope, 1871 sensu Rieppel, 2000 |?- †Chelyoposuchus crassisquamatus [jr. synon. of Helodus?] |?- †Helveticosaurus zollingeri [?Helveticosauridae] [an aquatic non-sauropterygian archosauromorph (Rieppel 1989)??] --o †Placodontoidea Cope, 1871 (_sensu_ Peyer & Kuhn-Schnyder 1955, and Rieppel & †Zanon, 1997) [paraphyletic _sensu_ Rieppel, 2000] |-- †_Paraplacodus broilii_ Peyer, 1931a [Paraplacodontidae Peyer & Kuhn-Schnyder, 1955] --+--o †Placodus Agazzis, 1833 [Anomosaurus, Crurosaurus] L.-M. Trias. Eu. M. Trias. SWAs. [Placodontidae Cope, 1871] | |-- †P. gigas Agazzis, 1833 [P. aethiopi; P. aethiops; P. andriani; P. angustus; P. antiquior; P. bathygnathus; P. bombidens; P. pachygnathus; P. quinimolaris; P. rugosus; P. strunzi] | -- †_P. nostratus_ --o †Cyamodontoidea Nopsca 1923 (sensu Peyer & Kuhn-Schnyder 1955 |?- †Psephosaurus mosis Brotzen, 1957 |?- †“Psephosaurus” picardi Bronzen, 1957 |?- †“Psephosaurus” sinaiticus Haas, 1959 |?- †“Psephosaurus” rhombifer Haas, 1969 |?- †“Psephosaurus” ramonensis (nomen nudum) |?- †“Psephosaurus” suevicus |--+-- †Henodus chelyops v. Huene, 1936 [Henodontidae] | --o †_Cyamodus_ Meyer 1863 [Cyamodontidae] | |-- †_C. rostratus_ (Münster, 1839) | |-- †_C. munsteri_ (Agassiz, 1833-45) [_C. münsteri_; _C. laticeps_?] [jr. synon. of _C. rostratus_?] | |?- †_C. tarnowitzensis_ Gürich, 1884 [type lost in WWII] | |-- †_C. hildegradis_ Peyer, 1931a | -- †C. kuhnschnyderi Nosotti & Pinna 1993 [C. kuhn-schnyderi (Nosotti & Pinna 1993a] --+?- †_Macroplacus raeticus_ Schubert-Klempnauer, 1975 [possibly synon. to _Psephoderma alpinum_] --+-- †Protenodontosaurus italicus Pinna, 1990 --o †Placochelyidae |?- †_Psephochelys polyosteoderma_ Li & Rieppel, 2002; |-- †_Placochelys placodonta_ Jaekel, 1902 [_Placochelyanus_] --o †Psephoderma Meyer, 1858 |-- †P. alpinum Meyer, 1858 [Placochelyanus stoppanii Kuhn, 1969; Placochelys malanchinii; Placochelys stoppanii; Placodus zitteli; ?Macroplacus raeticus Schubert-Klempnauer, 1975; ?Placochelys alpis sordidae] `-- †P. anglicum Meyer, 1867

Reference(s):

• Carroll, R. L., 1988: Vertebrate paleontology and evolution.
  –W. H. Freeman and company, New York, 1988, 698.
• Carroll, R. L., 1988: Appendix. 594-648.
  in Carroll, R. L. 1988: Vertebrate paleontology and evolution.
  –W. H. Freeman and company, New York, 1988, 698
• Li, C. & Rieppel, O., 2002: A new cyamodontoid placodont from Triassic of Guizhou, China.
  –Chinese Science Bulletin: Vol. 47, #5, pp. 403-407 [**doi: 10.1360/02tb9094**]
• Naish, W., 2000: Placodonts: The bizarre ‘walrus-turtles’ of the Triassic. (Updated: 2004-03-26)
  –iNet: The Oceans of Kansas: http://www.oceansofkansas.com/placodnt.html; [visited: 2005-05-26]
• Rieppel, O. C., 1997: Part II: Sauropterygia - Introduction. 107-119
  in Callaway, J. M. & Nicholls, E. L., (eds.) 1997: Ancient Marine Reptiles.
  –Academic Press, San Diego, 1997, pp. xivi-501
• Rieppel, O. C., 2000: Paraplacodus and the phylogeny of the Placodontia (Reptilia: Sauropterygia).
  –Zoological Journal of the Linnean Society: Vol. 130, #4, pp. 635-659
• Rieppel, O. C. & Hagdorn, H., 1997: Paleobiogeography of Middle Triassic Sauropterygia in Central and Western Europe. 121-144
  in Callaway, J. M. & Nicholls, E. L., (eds.) 1997: Ancient Marine Reptiles.
  –Academic Press, San Diego, 1997, xivi-501
• Rieppel, O. C. & †Zanon, R. T., 1997: The interrelationships of Placodontia.
  –Historical Biology: Vol. 12, pp. 211-227
• Sues, H.-D., 1987: On the skull of Placodus gigas and the relationships of the Placodontia.
  –Journal of Vertebrate Paleontology: Vol. 7, #2, pp. 138-144