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Marmornectes candrewi

Reptilia - Sauropterygia - Pliosauridae

Taxonomy
Marmornectes candrewi was named by Ketchum and Benson (2011). Its type specimen is BEDFM 1999.201, a partial skeleton, and it is a 3D body fossil. Its type locality is Quest Pit, east of Stewartby, which is in a Callovian marine mudstone in the Oxford Clay Formation of the United Kingdom. It is the type species of Marmornectes.

Synonymy list
YearName and author
2011Marmornectes candrewi Ketchum and Benson p. 110 figs. 1-15

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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
genusMarmornectes
speciescandrewi

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
H. F. Ketchum and R. B. J. Benson 2011Longirostrine pliosaurid with seven autapomorphies: six, widely spaced premaxillary alveoli; teeth subcircular in cross-section with longitudinal enamel ridges that only extend to the base of the enamel on one axial tooth surface (i.e. either the mesial or distal surface, this cannot be determined from isolated teeth); squamosal bulb absent; paired posterior processes present on anterior cervical ribs; distal end of dorsal ribs expanded by rugose bone and subequal in diameter to the proximal end; undulating dorsal margin of scapular blade; clavicle with rod-like posterolateral process and two notches in its medial margin.