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Macrochelys temminckii (Alligator snapping turtle)

Reptilia - Testudines

Taxonomy
Macroclemys temminckii was named by Troost (1835). It is extant.

It was recombined as Macrochelys temminckii by Knauss et al. (2011), Thomas et al. (2014) and van Dijk et al. (2014).

Synonymy list
YearName and author
1835Macroclemys temminckii Troost
1978Macroclemys temminckii Whetstone p. 161
1981Macroclemys temmincki Clarke p. 59
2011Macrochelys temminckii Knauss et al.
2014Macrochelys temminckii Thomas et al.
2014Macrochelys temminckii van Dijk et al.

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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
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
Chelydroidea()
PanchelydridaeJoyce et al. 2004
Chelydridae()
genusMacrochelysGray 1856
speciestemminckii(Troost 1835)

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
T. M. Thomas et al. 2014Carapacial caudal notch narrow and triangular or U-shaped, contained wholly on the pygal and not extending onto peripheral set 11, and pygal with two serrations and without medial suture; Peripheral 11 with 1 serration; pleural scute set 1 does not overlap onto the nuchal; distal rib end of costal 1 enters middle of peripheral 3; posterior projection of the squamosal globular and obtusely angled in lateral aspect, usually upwardly inflected; dermal scale on the frontals reduced in size; processus trochlearis oticum relatively straight with a single distal protuberance; posterior margin of squamosal-opisthotic contact relatively straight in dorsal aspect; mandible relatively narrow with slender triturating surfaces. Although generally the caudal notch is small and triangular, observable variation occurs within the species.