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Amphichelydia

Reptilia - Testudines

Taxonomy
Amphichelydia was named by Lydekker (1889).

It was reranked as the superfamily Amphichelydia by Hay (1908); it was corrected as Amphichelydii by Jaekel (1911); it was replaced with Pleurosternoidae by Hay (1930).

It was assigned to Chelonia by Lydekker (1889); to Testudinata by Lydekker (1889); to Thecophora by Hay (1908); to Testudinata by Baur (1893), Jaekel (1911); to Thecophora by Roxo (1937); to Testudinata by Estes (1964); to Testudines by Kuhn (1966); and to Chelonia by Swinton (1934), Olson (1947), Delair (1958), Khosatzky and Mlynarski (1971).

Synonymy list
YearName and author
1889Amphichelydia Lydekker pp. 204-205
1893Amphichelydia Baur p. 672
1908Amphichelydia Hay pp. 43-44
1911Amphichelydii Jaekel p. 185
1934Amphichelydia Swinton p. 75
1937Amphichelydia Roxo p. 43
1947Amphichelydia Olson pp. 44, 45
1958Amphichelydia Delair p. 47
1964Amphichelydia Estes p. 96
1966Amphichelydia Kuhn p. 20
1971Amphichelydia Khosatzky and Mlynarski p. 132

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
RankNameAuthor
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderAmphichelydia
suborderAmphichelydia

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.

Subor. †Amphichelydia Lydekker 1889
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Superfm. †Pleurosternoidea Hay 1930
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Fm. †Kallokibotiidae Nopcsa 1923
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G. †Kallokibotion Nopcsa 1923
Invalid names: Apertotemporalidae [empty]
Superfm. †Proganochelyoidea Baur 1887
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Invalid names: Archaeochelydiidae Bergounioux 1938 [empty]
Diagnosis
ReferenceDiagnosis
O. P. Hay 1908Thecophorous turtles having a carapace composed of neural, costal, and peripheral bones and a plastron in which the epiplastra are in contact with the hyoplastra. Mesoplastra usually, perhaps always, present. Intergular and inframarginal scutes probably always developt. Skull essentially crvptodiran in stiuctuie, but with various primitive elements. Neck short, the vertebrae little differentiated. Limbs, so far as known, fitted for walking.