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Eutretauranosuchus

Reptilia - Goniopholididae

Synonymy list
YearName and author
1967Eutretauranosuchus Mook p. 2
2002Eutretauranosuchus Tykoski et al.
2004Eutretauranosuchus Pol and Norell
2006Eutretauranosuchus Turner
2006Eutretauranosuchus Zaher et al.
2007Eutretauranosuchus Larsson and Sues
2007Eutretauranosuchus Lauprasert et al. p. 202
2008Eutretauranosuchus Fiorelli and Calvo
2010Eutretauranosuchus Smith et al.
2011Eutretauranosuchus Andrade et al.
2011Eutretauranosuchus Nascimento and Zaher
2012Eutretauranosuchus Bronzati et al.
2012Eutretauranosuchus Martin and Buffetaut
2013Eutretauranosuchus Pritchard et al.
2014Eutretauranosuchus Sertich and O'Connor
2015Eutretauranosuchus Puértolas-Pascual et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
Romeriida
Diapsida()
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
Pseudosuchia(Zittel 1890)
SuchiaKrebs 1974
Paracrocodylomorpha
Loricata(Merrem 1820)
Crocodylomorpha()
Solidocrania
suborderCrocodyliformes
MesoeucrocodyliaWhetstone and Whybrow 1983
NeosuchiaClark 1988
Coelognathosuchia()
familyGoniopholididaeCope 1875
genusEutretauranosuchus

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.

G. †Eutretauranosuchus Mook 1967
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Diagnosis
ReferenceDiagnosis
C. C. Mook 1967The skull is moderately long in proportion to its breadth. There is a pronounced depression at the base of the snout, and slightly developed preorbital ridges, suggesting the condition in the living caimans. The postorbital bars were clearly subdermal. The prefrontal bones extend farther forward than the frontal. The nasal bones widen anterior to the prefrontal tips. The nasal bones do not enter the external narial aperture at the surface. The frontal bone extends forward to the level of the eleventh maxillary teeth. The frontoparietal suture is located rather far back, permitting a considerable participation of the frontal in the anterior borders of the supratemporal fenestrae. The interfenestral bar is relatively broad and flat, and its edges are slightly uprolled. The supratemporal fenestrae are of moderate size. They are elongate oval in shape. The quadratojugal bones have sharp spines, resembling those of Crocodylus.
The internal narial aperture is unusually long and slender, its length being several times its breadth, and relatively much longer than in other crocodilians of its general size. It appears to be divided, at the palatal surface, at least, by a slender bar of bone. The composition of this bone is not clear, but it may be made of slender anterior processes of the pterygoid.
Anterior to the internal narial aperture is another opening, similar in character to it, but smaller. Like the internal nares it is divided by two slender bones, which appear to be processes of the palatines. The presence of this opening is unique among crocodilians.
The palatine fenestrae are large and are broad anteriorly. Their anterior ends lie opposite the eighteenth maxillary teeth. The pterygoid, omitting the anterior processes mentioned above, is short and broad. The palatine bones extend forward to the level of the thirteenth maxillary teeth.
The lower jaw is long, slender and unusually low anteriorly. The symphysis includes eight mandibular teeth on each side. The splenial bones enter the symphysis. They extend forward to the level of the seventh mandibular teeth.
Twenty-four alveoli are present in each ramus. Of these numbers 3 and 4 are slightly larger than the rest which are subequal in size. Numbers 1 and 2 appear to open on the external surface of the jaw. The first eighteen alveoli have separate walls, nineteen to twenty-four merge together. Numbers 5 to 11 are visible from the side. The external mandibular fenestrae are small and are oblique in position. They are much longer than high. The anterior internal fenestra is moderately large and the posterior one is small.
The articular process is excessively short and the articular surface, that articulated with the quadrate, is also very short.
The teeth, such as they are preserved, are rather small, are striated, and slightly bladed.
The posterior external portions of both rami are distinctly pitted, the anterior portions only slightly so.
The vertebrae are amphicoelous, and are goniopholid in character.
The limb bones are typically crocodilian and appear to be rather short for their breadth and in proportion to the dimensions of the skull and vertebrae.