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Angolachelys mbaxi

Reptilia - Testudines - Sandownidae

Taxonomy
Angolachelys mbaxi was named by Mateus et al. (2009). Its type specimen is MGUAN−PA 002, a partial skeleton (a nearly complete skull, an ungual phalanx, two cervical vertebrae, proximal part of the ilium, shell parts, and a few uninformative fragments), and it is a 3D body fossil. Its type locality is Iembe, Tadi, which is in a Turonian coastal horizon in the Tadi Beds Formation of Angola.

Synonymy list
YearName and author
2009Angolachelys mbaxi Mateus et al.
2012Angolachelys mbaxi Mateus et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
RankNameAuthor
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
Eucryptodira
familySandownidae
genusAngolachelys
speciesmbaxi

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. Mateus et al. 2009Unambiguous autapomorphies include: divided external nares separated by an internarial process of the pre− maxilla; sub−circular rugosity on the dorsal surface of the squamosal; squamosal wings projected posteriorly, represent− ing about 1/4 of the total length of the skull posterior to the quadrate, and frames the temporal fenestra both dorsally and laterally. Angolachelys also possesses an extremely derived secondary palate, extending posteriorly to a level well behind the orbits and an extensive skull roof with squamosal−parietal contact. Angolachelys appears to share with Sandownia harrisi a contribution of the jugal to the palate, small closely set eyes, and a unique trilobate outline of the rostrum.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: freshwatersubo
Locomotion: actively mobilec
Life habit: aquaticsubo
Diet: omnivoresubo
Reproduction: oviparoussubo
Created: 2005-08-26 14:49:00
Modified: 2005-08-26 16:49:00
Source: subo = suborder, c = class, subp = subphylum
References: Kiessling 2004, Uetz 2005, Carroll 1988, Hendy et al. 2009

Age range: Late/Upper Turonian or 93.50000 to 89.30000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Turonian93.5 - 89.3Angola (Bengo) Angolachelys mbaxi (type locality: 60168)