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Pliosaurus rossicus

Reptilia - Sauropterygia - Pliosauridae

Taxonomy
Pliosaurus rossicus was named by Novozhilov (1948). Its type specimen is PIN 304, a partial skeleton (most of a skull and a partial scapulocoracoid), and it is a 3D body fossil.

It was recombined as Liopleurodon rossicus by Halstead (1971), Bardet et al. (1993), Malakhov (1999) and Storrs et al. (2000).

Synonymy list
YearName and author
1948Pliosaurus rossicus Novozhilov p. 115 fig. 1a
1960Pliosaurus rossicus Tarlo p. 174
1971Liopleurodon rossicus Halstead p. 566
1993Liopleurodon rossicus Bardet et al. p. 390
1999Liopleurodon rossicus Malakhov p. 241
2000Liopleurodon rossicus Storrs et al. p. 191 fig. 11.1
2012Pliosaurus rossicus Knutsen p. 272
2013Pliosaurus rossicus Benson et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
RankNameAuthor
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
orderSauropterygia
Pistosauria(Baur 1890)
Plesiosauria(de Blainville 1835)
familyPliosauridaeSeeley 1874
Thalassophonea
genusPliosaurus()
speciesrossicus

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
E. M. Knutsen 2012Pliosaurus with 6 pairs of teeth in the mandibular symphysis (in ventral view?); 5 premaxillary tooth pairs; cervical vertebrae exhibiting ventral surface ornamentation, but lacking ventral keel; proportionally shorter humeri than P. funkei (less than 4.5 times the average width of cervical centra, versus more than 7 times).