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Hauffiosaurus zanoni

Reptilia - Sauropterygia - Pliosauridae

Taxonomy
Hauffiosaurus zanoni was named by O'Keefe (2001). Its type specimen is Hauff Museum and is a 3D body fossil. Its type locality is Holzmaden, epsilon II/4, non-specific collection data, which is in a Falciferum marine horizon in the Posidonia Shale Formation of Germany. It is the type species of Hauffiosaurus.

Synonymy list
YearName and author
2001Hauffiosaurus zanoni O'Keefe pp. 7-9, 13 figs. 2-3
2011Hauffiosaurus zanoni Vincent pp. 340-348 figs. 1-6

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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
genusHauffiosaurus
specieszanoni

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
P. Vincent 2011A moderately sized (3.4 m) pliosauroid with the following autapomorphy: ilium as long as the pubis, and longer than the ischium; and with the following unique combination of characters: an elongate rostrum, vomers not extending far posteriorly beyond the internal nares; a lateral palatal fenestra; no suborbital fenestra; an ectopterygoid boss contacting the jugal and the posterior part of the maxilla; no anterior interpterygoid vacuity; palatines not in contact with the internal nares; braincase in ventral view showing a concave area surrounded laterally and posteriorly by two excrescences projecting ventrally; seven premaxillary teeth; teeth ornamented with a series of longitudinal enamel ridges; 30 or 31 cervical vertebrae; short and wide limb girdles; median border of the pubis straight, forming an almost orthogonal angle with the anterior border; ischia short compared to width; ilium long, flat, only slightly twisted; anterior border of the humerus straight and shorter than femur; epipodials longer than wide; two supplementary bones in each paddle, the most proximal located between the distal margin of the ulna/fibula and the proximal margin of the ulnare/calcaneum, the most distal one located just posterior to the first, close to the postaxial margin of the ulnare/calcaneum