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Angolachelys mbaxi
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 Coniacian coastal horizon in the Itombe Formation of Angola.
Synonymy list
Year | Name and author |
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2009 | Angolachelys mbaxi Mateus et al. |
2012 | Angolachelys mbaxi Mateus et al. |
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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.
†Angolachelys mbaxi Mateus et al. 2009
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Diagnosis
Reference | Diagnosis | |
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O. Mateus et al. 2009 | Unambiguous 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
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Source: subo = suborder, c = class, subp = subphylum | |||||
References: Carroll 1988, Uetz 2005, Hendy et al. 2009 |