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Macroplacus

Reptilia - Sauropterygia

Taxonomy
Macroplacus was named by Schubert and Klempnauer (1975).

It was assigned to Cyamodontoidea by Rieppel and Hagdorn (1999); to Macroplacidae by Rieppel (2000); and to Placochelyida by Rieppel (2001).

Synonymy list
YearName and author
1975Macroplacus Schubert and Klempnauer
1999Macroplacus Rieppel and Hagdorn p. 381
2000Macroplacus Rieppel
2001Macroplacus Rieppel pp. 63-68, 78

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
RankNameAuthor
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
orderSauropterygia
Placodontiformes
orderPlacodontiaCope 1871
suborderCyamodontoideaNopcsa 1923
PlacochelyidaRomer 1956
genusMacroplacusSchubert and Klempnauer 1975

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.

Diagnosis
ReferenceDiagnosis
O. Rieppel 2001Posterior palatine tooth plates hypertrophied; posterior (nasal) processes of the premaxillaries enlarged and extending backward to reach the frontal, thereby separating the nasals from one another (convergent in Psephoderma); posttemporal fossae greatly reduced; a foramen piercing the shaft of the quadrate just above the mandibular condyle.