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Macrochelys suwanniensis (Suwannee alligator snapping turtle)

Reptilia - Testudines

Taxonomy
Macrochelys suwanniensis was named by Thomas et al. (2014). It is extant. Its type specimen is UF 166146, a skeleton.

Synonymy list
YearName and author
2014Macrochelys suwanniensis Thomas et al. p. 150 figs. 10-12

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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
speciessuwanniensis

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. 2014Macrochelys suwanniensis is distinguished by the following: carapacial caudal notch very wide and lunate (Figure 10), usually comprising the pygal and peripheral set 11 (shared with Chelydra); pygal sutured medially (composed of two bones) often with no serrations; Peripheral 11 with 1–2 serrations; distal rib end of costal 1 enters posterior third of peripheral 3; pleural scute set 1 with broad overlap onto the nuchal; dermal scale on the frontals very wide; processus trochlearis oticum with developed proximal and distal protuberances; squamosal contacts opisthotic anteriorly when viewed in dorsal aspect; mandible broad with expanded triturating surfaces and developed labial rugosity just anterior to the coronoid; posterior projection of the squamosal acutely angled in lateral aspect, dorsally straight or downwardly directed, and posteriorly extensive past the plane of the quadrate (Figure 11).
Measurements
No measurements are available
Composition: phosphaticsubp
Body part: carapacef
Adult length: 100 to < 1000f
Grouping: solitaryf
Environment: freshwaterf
Locomotion: actively mobilec
Life habit: aquaticf
Diet: piscivoref
Reproduction: oviparousf
Created: 2005-08-25 13:50:05
Modified: 2005-09-09 19:46:40
Source: f = family, c = class, subp = subphylum
References: Carroll 1988, Ernst and Barbour 1989, Hendy et al. 2009
Collections
No collection or age range data are available