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Hylaeochampsidae

Reptilia -

Synonymy list
YearName and author
1925Hylaeochampsidae Williston
1928Hylaeochampsinae Nopcsa p. 187
1946Hylaeochampsidae Kuhn p. 64
1966Hylaeochampsidae Kuhn p. 86
1988Hylaeochampsidae Carroll
2011Hylaeochampsidae Andrade et al.
2011Hylaeochampsidae Buscalioni et al.
2013Hylaeochampsidae Puértolas-Pascual et al.
2015Hylaeochampsidae Narváez 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()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
RankNameAuthor
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
Pseudosuchia(Zittel 1890)
SuchiaKrebs 1974
Paracrocodylomorpha
Loricata(Merrem 1820)
Crocodylomorpha()
suborderCrocodyliformes
MesoeucrocodyliaWhetstone and Whybrow 1983
NeosuchiaClark 1988
suborderEusuchiaHuxley 1875
Hylaeochampsidae(Williston 1925)
Hylaeochampsidae(Williston 1925)

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
A. D. Buscalioni et al. 2011Small eusuchians with brevirostral skull and thickned cranial and postcranial bones. Premaxillary (unknown in Hylaeochampsa and in Pachycheilosuchus) and anterior maxillary alveolar series of subequal size, maxilla posteriorly extends in a process devoid of teeth, minimal sculpturing of maxillary surface, reduced number of maxillary teeth, prefrontal longer than lachrymal (differing in Pietraroiasuchus, whereby the prefrontal and lachrymal are the same size, and unknown in P. trinquei); extremely narrow suborbital fenestra (unambiguous synapomorphy for the clade); choana anteriorly set in pterygoid (unknown in P. trinquei), pterygoid flanges relatively short and not reaching laterally the level of the quadrate medial condyle (unknown in P. trinquei), extremely robust ectopterygoid with expanded jugal and maxilla sutures, protuberance in the ventral surface of the quadrate with prominent muscle scars (unambiguous synapomorphy for the clade); vertical ridge at the occipital surface (unambiguous synapomorphy for the clade, unknown in P. trinquei), reduced anteroposterior extension of the quadrate articular process that does not (but may almost) reach the level of the occipital condyle (unambiguous synapomorphy for the clade, unknown in P. trinquei), anterodorsal margin of surangular elevated and extended (unknown in Hylaeochampsa).