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Aristonectes parvidens

Reptilia - Sauropterygia - Elasmosauridae

Taxonomy
Aristonectes parvidens was named by Cabrera (1941). Its type specimen is MLP 40-XI-14-6, a partial skeleton (skull and cervical vertebrae), and it is a 3D body fossil. Its type locality is Cañadón del Loro, which is in a Maastrichtian marine horizon in the Paso del Sapo Formation of Argentina. It is the type species of Aristonectes.

Synonyms
Synonymy list
YearName and author
1941Aristonectes parvidens Cabrera p. 114 figs. 1-6
1962Aristonectes parvidens Welles pp. 3 & 70
1963Aristonectes parvidens Persson p. 17 fig. 9
1989Turneria seymourensis Chatterjee and Small p. 199 figs. 2-10
1989Turneria seymouriensis Chatterjee and Small p. 199
1994Morturneria seymourensis Chatterjee and Creisler p. 142
1994Turneria seymouriensis Chatterjee and Creisler p. 142
2001Morturneria seymourensis O'Keefe p. 16
2003Aristonectes parvidens Gasparini et al. p. 105

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
RankNameAuthor
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
orderSauropterygia
Pistosauria(Baur 1890)
Plesiosauria(de Blainville 1835)
superfamilyPlesiosauroideaWelles 1943
Cryptoclidia
Xenopsaria
familyElasmosauridaeCope 1869
Aristonectinae
genusAristonectes
speciesparvidens

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
Z. Gasparini et al. 2003Ogive-shaped low and wide skull without premaxillary–maxillary constriction and with anteriorly dorsoventrally-flattened maxilla; homodont dentition composed of very numerous, strongly outwardly oriented alveoli and poorly ornamented teeth; dental formula: 10–13 premaxillary, 51–53 maxillary, and 60–65 dentary teeth; paired vomeronasal foramina; vomer with inverted M-shaped anterior suture; ogival mandible high anteriorly in lateral view with very short and high symphysis.