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Makhaira

Reptilia - Sauropterygia - Pliosauridae

Taxonomy
Makhaira was named by Fischer et al. (2015). Its type is Makhaira rossica. It is the type genus of Pliosauridae. It was considered monophyletic by Fischer et al. (2015).

It was assigned to Thalassophonea by Fischer et al. (2015).

Synonymy list
YearName and author
2015Makhaira Fischer 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
subclassEureptilia()
Romeriida
Diapsida()
orderSauropterygia
Pistosauria(Baur 1890)
Plesiosauria(de Blainville 1835)
familyPliosauridaeSeeley 1874
Thalassophonea
genusMakhaira

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
V. Fischer et al. 2015Pliosaurid plesiosaur characterized by the following autapomorphic features: serrated carinae in which the heights of the denticles are greater than their widths and vary in an undulose (i.e. wave-like) fashion across the apicobasal length of the carina; clustering of the mesial alveoli of the dentary into pairs.
Makhaira rossica is also characterized by the following combination of features: procumbent 1st
alveolus in premaxilla; 1st alveolus is placed directly anterior to the 2nd alveolus (both shared with a distinct new taxon from the Hauterivian of Russia; V.F., pers. obs.); long symphysis including more than 10 alveoli (unlike in Simolestes vorax, Liopleurodon ferox, Pliosaurus rossicus, Pliosaurus macromerus, Pliosaurus patagonicus, Megacephalosaurus eulerti, Brachauchenius lucasi, Kronosaurus queenslandicus) absence of symphysial ventral keel (as in Brachauchenius lucasi, Marmornectes candrewi and rare instances in the Late Jurassic), streamlined rostrumwith no lateral expansion (as in Hauffiosaurus spp., Marmornectes candrewi and brachauchenines), trihedral teeth (as in Pliosaurus spp. except P. kevani and P. andrewsi), low neural arch (unlike in Brachauchenius lucasi).